vice-emu-commit Mailing List for VICE (Page 3)

Revision: 45745
          http://sourceforge.net/p/vice-emu/code/45745
Author:   gpz
Date:     2025-08-31 13:34:57 +0000 (Sun, 31 Aug 2025)
Log Message:
-----------
Delay some initialization until first actual use. First step towards allocating all printer resources dynamically.

Modified Paths:
--------------
    trunk/vice/src/printerdrv/driver-select.c
    trunk/vice/src/printerdrv/drv-1520.c
    trunk/vice/src/printerdrv/drv-mps803.c
    trunk/vice/src/printerdrv/drv-nl10.c
    trunk/vice/src/printerdrv/printer.c

Modified: trunk/vice/src/printerdrv/driver-select.c
===================================================================
--- trunk/vice/src/printerdrv/driver-select.c	2025-08-27 09:02:36 UTC (rev 45744)
+++ trunk/vice/src/printerdrv/driver-select.c	2025-08-31 13:34:57 UTC (rev 45745)
@@ -25,8 +25,6 @@
  *
  */
 
-/* #define DEBUG_PRINTER */
-
 #include "vice.h"
 
 #include <stdio.h>
@@ -44,6 +42,15 @@
 #include "util.h"
 
 
+/* #define DEBUG_PRINTER */
+
+#ifdef DEBUG_PRINTER
+#define DBG(x) log_printf  x
+#else
+#define DBG(x)
+#endif
+
+
 static log_t driver_select_log = LOG_DEFAULT;
 
 /* Currently used printer driver.  */
@@ -207,6 +214,8 @@
     if (list == NULL) {
         return -1;
     }
+    DBG(("set_printer_driver name:%s param:%d (list->driver_select.drv_name:%s)",
+         name, prnr, list->driver_select.drv_name));
 
     if ((prnr == PRINTER_IEC_4) || (prnr == PRINTER_IEC_5)) {
         if (!driver_select_is_printer(name)) {
@@ -229,12 +238,12 @@
             memcpy(&(driver[prnr]), &(list->driver_select), sizeof(driver_select_t));
             if(driver[prnr].drv_select) {
 #ifdef DEBUG_PRINTER
-                log_message(driver_select_log, "driver[%d].drv_select != NULL", prnr);
+                log_message(driver_select_log, "driver[%u].drv_select != NULL (%s)", prnr, name);
 #endif
                 return driver[prnr].drv_select(prnr);
             }
 #ifdef DEBUG_PRINTER
-            log_message(driver_select_log, "driver[%d].drv_select == NULL", prnr);
+            log_message(driver_select_log, "driver[%u].drv_select == NULL (%s)", prnr, name);
 #endif
             return 0;
         }
@@ -350,12 +359,12 @@
 {
     if(driver[prnr].drv_select) {
 #ifdef DEBUG_PRINTER
-        log_message(driver_select_log, "driver[%d].drv_select != NULL", prnr);
+        log_message(driver_select_log, "driver[%u].drv_select != NULL", prnr);
 #endif
         return driver[prnr].drv_select(prnr);
     }
 #ifdef DEBUG_PRINTER
-    log_message(driver_select_log, "driver[%d].drv_select == NULL", prnr);
+    log_message(driver_select_log, "driver[%u].drv_select == NULL", prnr);
 #endif
     return 0;
 }

Modified: trunk/vice/src/printerdrv/drv-1520.c
===================================================================
--- trunk/vice/src/printerdrv/drv-1520.c	2025-08-27 09:02:36 UTC (rev 45744)
+++ trunk/vice/src/printerdrv/drv-1520.c	2025-08-31 13:34:57 UTC (rev 45745)
@@ -45,6 +45,12 @@
 /*#define DEBUG1520       1 */
 /*#define DEBUG1520_A   1*/
 
+#ifdef DEBUG1520
+#define DBG(x) log_printf  x
+#else
+#define DBG(x)
+#endif
+
 /*
  * Each line segment is 0,2 mm.
  * At 150 DPI that would be 11,8 pixels.
@@ -108,6 +114,8 @@
     int rel_origin_x, rel_origin_y;     /* steps relative to abs_origin */
     int cur_x, cur_y;                   /* steps relative to abs_origin */
     int lowest_y;                       /* steps relative to start of page */
+
+    int first_open_type;    /* if not 0, the driver will initialize itself (for the given type) if needed */
 };
 typedef struct plot_s plot_t;
 
@@ -1084,6 +1092,51 @@
 /* ------------------------------------------------------------------------- */
 /* Interface to the upper layer.  */
 
+static int drv_1520_palette_init(void)
+{
+    static const char *color_names[5] =
+    {
+        "Black", "White", "Blue", "Green", "Red"
+    };
+
+    /* FIXME: rename the palette somehow? */
+    palette = palette_create(5, color_names);
+
+    if (palette == NULL) {
+        return -1;
+    }
+
+    if (palette_load("1520.vpl", "PRINTER", palette) < 0) {
+        log_error(drv1520_log, "Cannot load palette file `%s'.",
+                  "1520.vpl");
+        return -1;
+    }
+
+    return 0;
+}
+
+static int drv_1520_first_open(unsigned int prnr)
+{
+#if DEBUG1520
+    log_message(drv1520_log, "drv_1520_first_open: prnr=%u", prnr);
+#endif
+
+    output_parameter_t output_parameter;
+    plot_t *mps = &drv_1520[prnr];
+
+    output_parameter.maxcol = X_PIXELS+1;
+    output_parameter.maxrow = Y_PIXELS+1;
+    output_parameter.dpi_x = (PIXELS_PER_STEP * STEPS_PER_MM * 254) / 10;
+    output_parameter.dpi_y = (PIXELS_PER_STEP * STEPS_PER_MM * 254) / 10;
+    output_parameter.palette = palette;
+
+    drv_1520[prnr].prnr = prnr;
+    power_on_reset(mps);
+
+    drv_1520[prnr].first_open_type = 0;
+
+    return output_select_open(prnr, &output_parameter);
+}
 static int drv_1520_open(unsigned int prnr, unsigned int secondary)
 {
 #if DEBUG1520
@@ -1092,24 +1145,30 @@
 
     /* Is this the first open? */
     if (secondary == DRIVER_FIRST_OPEN) {
-        output_parameter_t output_parameter;
-        plot_t *mps = &drv_1520[prnr];
+        drv_1520[prnr].first_open_type = 1520;
+        return 0;
+    } else if (secondary > 7) {
+        return -1;
+    }
 
-        output_parameter.maxcol = X_PIXELS+1;
-        output_parameter.maxrow = Y_PIXELS+1;
-        output_parameter.dpi_x = (PIXELS_PER_STEP * STEPS_PER_MM * 254) / 10;
-        output_parameter.dpi_y = (PIXELS_PER_STEP * STEPS_PER_MM * 254) / 10;
-        output_parameter.palette = palette;
+    return 0;
+}
 
-        drv_1520[prnr].prnr = prnr;
-        power_on_reset(mps);
+static int drv_first_open(unsigned int prnr)
+{
+    DBG(("drv_first_open(prnr:%u first_open_type:%d)", prnr, drv_1520[prnr].first_open_type));
 
-        return output_select_open(prnr, &output_parameter);
-    } else if (secondary > 7) {
+    if ((palette == NULL) && (drv_1520_palette_init() < 0)) {
         return -1;
     }
 
-    return 0;
+    switch (drv_1520[prnr].first_open_type) {
+        case 1520:
+            return drv_1520_first_open(prnr);
+        case 0:
+            return 0;
+    }
+    return -1;
 }
 
 static void drv_1520_close(unsigned int prnr, unsigned int secondary)
@@ -1117,7 +1176,9 @@
 #if DEBUG1520
     log_message(drv1520_log, "drv_1520_close: sa=%u prnr=%u", secondary, prnr);
 #endif
-
+    if (drv_first_open(prnr) < 0) {
+        return;
+    }
     /* Is this the last close? */
     if (secondary == DRIVER_LAST_CLOSE) {
         plot_t *mps = &drv_1520[prnr];
@@ -1145,7 +1206,9 @@
 #if DEBUG1520
     log_message(drv1520_log, "drv_1520_putc: sa=%u b='%c' (%u) prnr=%u", secondary, b, b, prnr);
 #endif
-
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
     switch (secondary) {
     case 0:
         print_char_text(mps, b);
@@ -1180,6 +1243,9 @@
 
 static int drv_1520_getc(unsigned int prnr, unsigned int secondary, uint8_t *b)
 {
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
     return output_select_getc(prnr, b);
 }
 
@@ -1188,6 +1254,9 @@
 #if DEBUG1520
     log_message(drv1520_log, "drv_1520_flush");
 #endif
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
     return output_select_flush(prnr);
 }
 
@@ -1198,6 +1267,11 @@
 #endif
     plot_t *mps = &drv_1520[prnr];
 
+#if 0 /* do not auto-init on formfeed, avoid superflous init at shutdown */
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
+#endif
     if (mps->prnr == (int)prnr && mps->sheet != NULL) {
         eject(mps);
     }
@@ -1240,11 +1314,6 @@
 
 int drv_1520_init(void)
 {
-    static const char *color_names[5] =
-    {
-        "Black", "White", "Blue", "Green", "Red"
-    };
-
     drv1520_log = log_open("plot1520");
 
 #if DEBUG1520
@@ -1251,18 +1320,6 @@
     log_message(drv1520_log, "drv_1520_init");
 #endif
 
-    palette = palette_create(5, color_names);
-
-    if (palette == NULL) {
-        return -1;
-    }
-
-    if (palette_load("1520.vpl", "PRINTER", palette) < 0) {
-        log_error(drv1520_log, "Cannot load palette file `%s'.",
-                  "1520.vpl");
-        return -1;
-    }
-
     return 0;
 }
 

Modified: trunk/vice/src/printerdrv/drv-mps803.c
===================================================================
--- trunk/vice/src/printerdrv/drv-mps803.c	2025-08-27 09:02:36 UTC (rev 45744)
+++ trunk/vice/src/printerdrv/drv-mps803.c	2025-08-31 13:34:57 UTC (rev 45745)
@@ -26,8 +26,6 @@
  *
  */
 
-/* #define DEBUG_MPS803 */
-
 #include "vice.h"
 
 #include <stdio.h>
@@ -45,6 +43,8 @@
 #include "sysfile.h"
 #include "types.h"
 
+/* #define DEBUG_MPS803 */
+
 #ifdef DEBUG_MPS803
 #define DBG(x) log_printf  x
 #else
@@ -248,6 +248,8 @@
 
     uint8_t charset[512 * MAX_BYTES_PER_CHAR]; /* full charset */
     uint8_t rom[MAX_ROM_SIZE]; /* full printer rom */
+
+    int first_open_type;    /* if not 0, the driver will initialize itself (for the given type) if needed */
 };
 typedef struct mps_s mps_t;
 
@@ -271,6 +273,8 @@
 #define MPS_BUSINESS 0x80 /* opened with SA = 7 in business mode */
 #define MPS_GRAPHICS 0x00 /* opened with SA = 0 in graphics mode */
 
+static int drv_first_open(unsigned int prnr);
+
 /* ------------------------------------------------------------------------- */
 
 /* get one dot to print (for character)
@@ -1004,8 +1008,34 @@
 /* ------------------------------------------------------------------------- */
 /* Interface to the upper layer.  */
 
+static int mps803_palette_init(void)
+{
+    const char *color_names[2] = {"Black", "White"};
+
+    /* FIXME: rename the palette somehow? */
+    palette = palette_create(2, color_names);
+
+    if (palette == NULL) {
+        return -1;
+    }
+
+    if (palette_load("mps803.vpl", "PRINTER", palette) < 0) {
+        log_error(drv803_log, "Cannot load palette file `%s'.",
+                  "mps803.vpl");
+        return -1;
+    }
+
+    return 0;
+}
+
 static int drv_common_open(unsigned int prnr, unsigned int secondary)
 {
+
+    DBG(("drv_common_open(%u,%u)", prnr, secondary));
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
+
     switch (secondary) {
         case  0: /* Print data exactly as received (mps801,mps803: Select graphic mode) */
             /* set_chargen_mode(&drv_mps803[prnr], secondary, MPS_GRAPHICS); */
@@ -1052,35 +1082,49 @@
     return 0;
 }
 
-static int drv_2022_open(unsigned int prnr, unsigned int secondary)
+static int drv_2022_first_open(unsigned int prnr)
 {
-    if (secondary == DRIVER_FIRST_OPEN) {
-        output_parameter_t output_parameter;
+    output_parameter_t output_parameter;
 
-        DBG(("drv_2022_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
-        output_parameter.maxcol = 80 * 6;
-        output_parameter.maxrow = 66 * 7;
-        output_parameter.dpi_x = 72;
-        output_parameter.dpi_y = 72;
-        output_parameter.palette = palette;
+    DBG(("drv_2022_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
 
-        /* init_charset_2022(&drv_mps803[prnr], C2022_ROM_NAME, C2022_ROM_SIZE); */    /* 7x6 */
-        if (sysfile_load(C2022_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, C2022_ROM_SIZE, C2022_ROM_SIZE) < 0) {
-            log_error(drv803_log, "Could not load printer ROM '%s'.", C2022_ROM_NAME);
-            return -1;
-        }
-        convert_rom_char_192(&drv_mps803[prnr], 0);
+    /* NOTE: the palette should have been (re)loaded by the function that calls this */
+
+    /* init_charset_2022(&drv_mps803[prnr], C2022_ROM_NAME, C2022_ROM_SIZE); */    /* 7x6 */
+    if (sysfile_load(C2022_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, C2022_ROM_SIZE, C2022_ROM_SIZE) < 0) {
+        log_error(drv803_log, "Could not load printer ROM '%s'.", C2022_ROM_NAME);
+        return -1;
+    }
+
+    drv_mps803[prnr].char_height = 7;
+    drv_mps803[prnr].char_width = 6;
+    drv_mps803[prnr].page_width_dots = 80 * 6;
+    drv_mps803[prnr].page_height_dots = 66 * 7;
+    drv_mps803[prnr].model_sa_features = SA_FEATURE_PROG_CHAR_254;
+    drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_OLD_ENHANCE | CTRL_FEATURE_CR_WITHOUT_LF;
+    drv_mps803[prnr].lookup_method = 2;
+
+    output_parameter.maxcol = 80 * 6;
+    output_parameter.maxrow = 66 * 7;
+    output_parameter.dpi_x = 72;
+    output_parameter.dpi_y = 72;
+    output_parameter.palette = palette;
+
+    convert_rom_char_192(&drv_mps803[prnr], 0);
 #ifdef DEBUG_MPS803
-        dump_printer_charset(&drv_mps803[prnr]);
+    dump_printer_charset(&drv_mps803[prnr]);
 #endif
-        drv_mps803[prnr].char_height = 7;
-        drv_mps803[prnr].char_width = 6;
-        drv_mps803[prnr].page_width_dots = 80 * 6;
-        drv_mps803[prnr].page_height_dots = 66 * 7;
-        drv_mps803[prnr].model_sa_features = SA_FEATURE_PROG_CHAR_254;
-        drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_OLD_ENHANCE | CTRL_FEATURE_CR_WITHOUT_LF;
-        drv_mps803[prnr].lookup_method = 2;
-        return output_select_open(prnr, &output_parameter);
+
+    drv_mps803[prnr].first_open_type = 0;
+
+    return output_select_open(prnr, &output_parameter);
+}
+
+static int drv_2022_open(unsigned int prnr, unsigned int secondary)
+{
+    if (secondary == DRIVER_FIRST_OPEN) {
+        drv_mps803[prnr].first_open_type = 2022;
+        return 0;
     }
     DBG(("drv_2022_open(prnr:%u, secondary:%u)", prnr, secondary));
     return drv_common_open(prnr, secondary);
@@ -1090,39 +1134,53 @@
 {
     DBG(("drv_2022_select(%u)", prnr));
     output_select_close(prnr);
+
     return drv_2022_open(prnr, DRIVER_FIRST_OPEN);
 }
 
-static int drv_4023_open(unsigned int prnr, unsigned int secondary)
+static int drv_4023_first_open(unsigned int prnr)
 {
-    if (secondary == DRIVER_FIRST_OPEN) {
-        output_parameter_t output_parameter;
-        DBG(("drv_4023_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
+    output_parameter_t output_parameter;
 
-        output_parameter.maxcol = 80 * 8;
-        output_parameter.maxrow = 66 * 8;
-        output_parameter.dpi_x = 72;
-        output_parameter.dpi_y = 72;
-        output_parameter.palette = palette;
+    DBG(("drv_4023_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
 
-        /* init_charset_4023(&drv_mps803[prnr], C4023_ROM_NAME, C4023_ROM_SIZE); */    /* 8x8 */
-        if (sysfile_load(C4023_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, C4023_ROM_SIZE, C4023_ROM_SIZE) < 0) {
-            log_error(drv803_log, "Could not load printer ROM '%s'.", C4023_ROM_NAME);
-            return -1;
-        }
-        convert_rom_char_192(&drv_mps803[prnr], 1024);
+    /* NOTE: the palette should have been (re)loaded by the function that calls this */
 
+    /* init_charset_4023(&drv_mps803[prnr], C4023_ROM_NAME, C4023_ROM_SIZE); */    /* 8x8 */
+    if (sysfile_load(C4023_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, C4023_ROM_SIZE, C4023_ROM_SIZE) < 0) {
+        log_error(drv803_log, "Could not load printer ROM '%s'.", C4023_ROM_NAME);
+        return -1;
+    }
+
+    drv_mps803[prnr].char_height = 8;
+    drv_mps803[prnr].char_width = 8;
+    drv_mps803[prnr].page_width_dots = 80 * 8;
+    drv_mps803[prnr].page_height_dots = 66 * 8;
+    drv_mps803[prnr].model_sa_features = SA_FEATURE_PROG_CHAR_254;
+    drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_OLD_ENHANCE | CTRL_FEATURE_CR_WITHOUT_LF;
+    drv_mps803[prnr].lookup_method = 1;
+
+    output_parameter.maxcol = 80 * 8;
+    output_parameter.maxrow = 66 * 8;
+    output_parameter.dpi_x = 72;
+    output_parameter.dpi_y = 72;
+    output_parameter.palette = palette;
+
+    convert_rom_char_192(&drv_mps803[prnr], 1024);
+
 #ifdef DEBUG_MPS803
-        dump_printer_charset(&drv_mps803[prnr]);
+    dump_printer_charset(&drv_mps803[prnr]);
 #endif
-        drv_mps803[prnr].char_height = 8;
-        drv_mps803[prnr].char_width = 8;
-        drv_mps803[prnr].page_width_dots = 80 * 8;
-        drv_mps803[prnr].page_height_dots = 66 * 8;
-        drv_mps803[prnr].model_sa_features = SA_FEATURE_PROG_CHAR_254;
-        drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_OLD_ENHANCE | CTRL_FEATURE_CR_WITHOUT_LF;
-        drv_mps803[prnr].lookup_method = 1;
-        return output_select_open(prnr, &output_parameter);
+    drv_mps803[prnr].first_open_type = 0;
+
+    return output_select_open(prnr, &output_parameter);
+}
+
+static int drv_4023_open(unsigned int prnr, unsigned int secondary)
+{
+    if (secondary == DRIVER_FIRST_OPEN) {
+        drv_mps803[prnr].first_open_type = 4023;
+        return 0;
     }
     DBG(("drv_4023_open(prnr:%u, secondary:%u)", prnr, secondary));
     return drv_common_open(prnr, secondary);
@@ -1132,39 +1190,53 @@
 {
     DBG(("drv_4023_select(%u)", prnr));
     output_select_close(prnr);
+
     return drv_4023_open(prnr, DRIVER_FIRST_OPEN);
 }
 
-static int drv_8023_open(unsigned int prnr, unsigned int secondary)
+static int drv_8023_first_open(unsigned int prnr)
 {
-    if (secondary == DRIVER_FIRST_OPEN) {
-        output_parameter_t output_parameter;
-        DBG(("drv_8023_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
+    output_parameter_t output_parameter;
 
-        output_parameter.maxcol = 136 * 6;
-        output_parameter.maxrow = 66 * 7;
-        output_parameter.dpi_x = 72;
-        output_parameter.dpi_y = 72;
-        output_parameter.palette = palette;
+    DBG(("drv_8023_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
 
-        /* init_charset_8023(&drv_mps803[prnr], C8023_ROM_NAME, C8023_ROM_SIZE); */    /* 8x8 */
-        if (sysfile_load(C8023_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, C8023_ROM_SIZE, C8023_ROM_SIZE) < 0) {
-            log_error(drv803_log, "Could not load printer ROM '%s'.", C8023_ROM_NAME);
-            return -1;
-        }
-        convert_rom_char_192(&drv_mps803[prnr], 0);
+    /* NOTE: the palette should have been (re)loaded by the function that calls this */
+
+    /* init_charset_8023(&drv_mps803[prnr], C8023_ROM_NAME, C8023_ROM_SIZE); */    /* 8x8 */
+    if (sysfile_load(C8023_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, C8023_ROM_SIZE, C8023_ROM_SIZE) < 0) {
+        log_error(drv803_log, "Could not load printer ROM '%s'.", C8023_ROM_NAME);
+        return -1;
+    }
+
+    drv_mps803[prnr].char_height = 7;
+    drv_mps803[prnr].char_width = 6;
+    drv_mps803[prnr].page_width_dots = 136 * 6;
+    drv_mps803[prnr].page_height_dots = 66 * 7;
+    drv_mps803[prnr].model_sa_features = SA_FEATURE_PROG_CHAR_254;
+    drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_OLD_ENHANCE | CTRL_FEATURE_CR_WITHOUT_LF;
+    drv_mps803[prnr].lookup_method = 1;
+
+    output_parameter.maxcol = 136 * 6;
+    output_parameter.maxrow = 66 * 7;
+    output_parameter.dpi_x = 72;
+    output_parameter.dpi_y = 72;
+    output_parameter.palette = palette;
+
+    convert_rom_char_192(&drv_mps803[prnr], 0);
 #ifdef DEBUG_MPS803
-        dump_printer_charset(&drv_mps803[prnr]);
+    dump_printer_charset(&drv_mps803[prnr]);
 #endif
 
-        drv_mps803[prnr].char_height = 7;
-        drv_mps803[prnr].char_width = 6;
-        drv_mps803[prnr].page_width_dots = 136 * 6;
-        drv_mps803[prnr].page_height_dots = 66 * 7;
-        drv_mps803[prnr].model_sa_features = SA_FEATURE_PROG_CHAR_254;
-        drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_OLD_ENHANCE | CTRL_FEATURE_CR_WITHOUT_LF;
-        drv_mps803[prnr].lookup_method = 1;
-        return output_select_open(prnr, &output_parameter);
+    drv_mps803[prnr].first_open_type = 0;
+
+    return output_select_open(prnr, &output_parameter);
+}
+
+static int drv_8023_open(unsigned int prnr, unsigned int secondary)
+{
+    if (secondary == DRIVER_FIRST_OPEN) {
+        drv_mps803[prnr].first_open_type = 8023;
+        return 0;
     }
     DBG(("drv_8023_open(prnr:%u, secondary:%u)", prnr, secondary));
     return drv_common_open(prnr, secondary);
@@ -1174,40 +1246,53 @@
 {
     DBG(("drv_8023_select(%u)", prnr));
     output_select_close(prnr);
+
     return drv_8023_open(prnr, DRIVER_FIRST_OPEN);
 }
 
-static int drv_mps801_open(unsigned int prnr, unsigned int secondary)
+static int drv_mps801_first_open(unsigned int prnr)
 {
-    if (secondary == DRIVER_FIRST_OPEN) {
-        output_parameter_t output_parameter;
-        DBG(("drv_mps801_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
+    output_parameter_t output_parameter;
 
-        output_parameter.maxcol = 80 * 6;
-        output_parameter.maxrow = 66 * 7;
-        output_parameter.dpi_x = 60;
-        output_parameter.dpi_y = 72;
-        output_parameter.palette = palette;
+    DBG(("drv_mps801_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
 
-        /* init_charset_mps801(&drv_mps803[prnr], MPS801_ROM_NAME, MPS801_ROM_SIZE); */    /* 8x8 */
-        if (sysfile_load(MPS801_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, MPS801_ROM_SIZE, MPS801_ROM_SIZE) < 0) {
-            log_error(drv803_log, "Could not load printer ROM '%s'.", MPS801_ROM_NAME);
-            return -1;
-        }
+    /* NOTE: the palette should have been (re)loaded by the function that calls this */
 
-        convert_rom_char_mps801(&drv_mps803[prnr], 0x800);
+    /* init_charset_mps801(&drv_mps803[prnr], MPS801_ROM_NAME, MPS801_ROM_SIZE); */    /* 8x8 */
+    if (sysfile_load(MPS801_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, MPS801_ROM_SIZE, MPS801_ROM_SIZE) < 0) {
+        log_error(drv803_log, "Could not load printer ROM '%s'.", MPS801_ROM_NAME);
+        return -1;
+    }
+
+    drv_mps803[prnr].char_height = 7;
+    drv_mps803[prnr].char_width = 6;
+    drv_mps803[prnr].page_width_dots = 80 * 6;
+    drv_mps803[prnr].page_height_dots = 66 * 7;
+    drv_mps803[prnr].model_sa_features = 0;
+    drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_NEW_ENHANCE | CTRL_FEATURE_BIT_IMAGE_PRINTING;
+    drv_mps803[prnr].lookup_method = 0;
+
+    output_parameter.maxcol = 80 * 6;
+    output_parameter.maxrow = 66 * 7;
+    output_parameter.dpi_x = 60;
+    output_parameter.dpi_y = 72;
+    output_parameter.palette = palette;
+
+    convert_rom_char_mps801(&drv_mps803[prnr], 0x800);
 #ifdef DEBUG_MPS803
-        dump_printer_charset(&drv_mps803[prnr]);
+    dump_printer_charset(&drv_mps803[prnr]);
 #endif
 
-        drv_mps803[prnr].char_height = 7;
-        drv_mps803[prnr].char_width = 6;
-        drv_mps803[prnr].page_width_dots = 80 * 6;
-        drv_mps803[prnr].page_height_dots = 66 * 7;
-        drv_mps803[prnr].model_sa_features = 0;
-        drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_NEW_ENHANCE | CTRL_FEATURE_BIT_IMAGE_PRINTING;
-        drv_mps803[prnr].lookup_method = 0;
-        return output_select_open(prnr, &output_parameter);
+    drv_mps803[prnr].first_open_type = 0;
+
+    return output_select_open(prnr, &output_parameter);
+}
+
+static int drv_mps801_open(unsigned int prnr, unsigned int secondary)
+{
+    if (secondary == DRIVER_FIRST_OPEN) {
+        drv_mps803[prnr].first_open_type = 801;
+        return 0;
     }
     DBG(("drv_mps801_open(prnr:%u, secondary:%u)", prnr, secondary));
     return drv_common_open(prnr, secondary);
@@ -1217,38 +1302,53 @@
 {
     DBG(("drv_mps801_select(%u)", prnr));
     output_select_close(prnr);
+
     return drv_mps801_open(prnr, DRIVER_FIRST_OPEN);
 }
 
-static int drv_mps802_open(unsigned int prnr, unsigned int secondary)
+static int drv_mps802_first_open(unsigned int prnr)
 {
-    if (secondary == DRIVER_FIRST_OPEN) {
-        output_parameter_t output_parameter;
-        DBG(("drv_mps802_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
+    output_parameter_t output_parameter;
 
-        output_parameter.maxcol = 80 * 8;
-        output_parameter.maxrow = 66 * 8;
-        output_parameter.dpi_x = 72;
-        output_parameter.dpi_y = 72;
-        output_parameter.palette = palette;
+    DBG(("drv_mps802_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
 
-        /* init_charset_mps802(&drv_mps803[prnr], MPS802_ROM_NAME, MPS802_ROM_SIZE); */    /* 8x8 */
-        if (sysfile_load(MPS802_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, MPS802_ROM_SIZE, MPS802_ROM_SIZE) < 0) {
-            log_error(drv803_log, "Could not load printer ROM '%s'.", MPS802_ROM_NAME);
-            return -1;
-        }
-        convert_rom_char_192(&drv_mps803[prnr], 1024);
+    /* NOTE: the palette should have been (re)loaded by the function that calls this */
+
+    /* init_charset_mps802(&drv_mps803[prnr], MPS802_ROM_NAME, MPS802_ROM_SIZE); */    /* 8x8 */
+    if (sysfile_load(MPS802_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, MPS802_ROM_SIZE, MPS802_ROM_SIZE) < 0) {
+        log_error(drv803_log, "Could not load printer ROM '%s'.", MPS802_ROM_NAME);
+        return -1;
+    }
+
+    drv_mps803[prnr].char_height = 8;
+    drv_mps803[prnr].char_width = 8;
+    drv_mps803[prnr].page_width_dots = 80 * 8;
+    drv_mps803[prnr].page_height_dots = 66 * 8;
+    drv_mps803[prnr].model_sa_features = SA_FEATURE_PROG_CHAR_254;
+    drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_CR_WITHOUT_LF;
+    drv_mps803[prnr].lookup_method = 1;
+
+    output_parameter.maxcol = 80 * 8;
+    output_parameter.maxrow = 66 * 8;
+    output_parameter.dpi_x = 72;
+    output_parameter.dpi_y = 72;
+    output_parameter.palette = palette;
+
+    convert_rom_char_192(&drv_mps803[prnr], 1024);
 #ifdef DEBUG_MPS803
-        dump_printer_charset(&drv_mps803[prnr]);
+    dump_printer_charset(&drv_mps803[prnr]);
 #endif
-        drv_mps803[prnr].char_height = 8;
-        drv_mps803[prnr].char_width = 8;
-        drv_mps803[prnr].page_width_dots = 80 * 8;
-        drv_mps803[prnr].page_height_dots = 66 * 8;
-        drv_mps803[prnr].model_sa_features = SA_FEATURE_PROG_CHAR_254;
-        drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_CR_WITHOUT_LF;
-        drv_mps803[prnr].lookup_method = 1;
-        return output_select_open(prnr, &output_parameter);
+
+    drv_mps803[prnr].first_open_type = 0;
+
+    return output_select_open(prnr, &output_parameter);
+}
+
+static int drv_mps802_open(unsigned int prnr, unsigned int secondary)
+{
+    if (secondary == DRIVER_FIRST_OPEN) {
+        drv_mps803[prnr].first_open_type = 802;
+        return 0;
     }
     DBG(("drv_mps802_open(prnr:%u, secondary:%u)", prnr, secondary));
     return drv_common_open(prnr, secondary);
@@ -1258,41 +1358,55 @@
 {
     DBG(("drv_mps802_select(%u)", prnr));
     output_select_close(prnr);
+
     return drv_mps802_open(prnr, DRIVER_FIRST_OPEN);
 }
 
-static int drv_mps803_open(unsigned int prnr, unsigned int secondary)
+static int drv_mps803_first_open(unsigned int prnr)
 {
-    if (secondary == DRIVER_FIRST_OPEN) {
-        output_parameter_t output_parameter;
+    static output_parameter_t output_parameter;
 
-        DBG(("drv_mps803_open(prnr:%u, secondary:DRIVER_FIRST_OPEN)", prnr));
-        output_parameter.maxcol = MPS803_PAGE_WIDTH_DOTS;
-        output_parameter.maxrow = MPS803_PAGE_HEIGHT_DOTS;
-        output_parameter.dpi_x = 60;    /* mps803 has different horizontal & vertical dpi - see pg 49 of the manual part H. */
-        output_parameter.dpi_y = 72;    /* NOTE - mixed dpi might not be liked by some image viewers */
-        output_parameter.palette = palette;
+    DBG(("drv_mps803_first_open(prnr:%u)", prnr));
 
-        /* init_charset_mps803(&drv_mps803[prnr], MPS803_ROM_NAME, MPS803_ROM_SIZE); */    /* 7x6 */
-        if (sysfile_load(MPS803_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, MPS803_ROM_SIZE, MPS803_ROM_SIZE) < 0) {
-            log_error(drv803_log, "Could not load printer charset '%s'.", MPS803_ROM_NAME);
-            return -1;
-        }
+    /* NOTE: the palette should have been (re)loaded by the function that calls this */
 
-        convert_rom_char_160(&drv_mps803[prnr], 0xc3f);
+    /* init_charset_mps803(&drv_mps803[prnr], MPS803_ROM_NAME, MPS803_ROM_SIZE); */    /* 7x6 */
+    if (sysfile_load(MPS803_ROM_NAME, "PRINTER", drv_mps803[prnr].rom, MPS803_ROM_SIZE, MPS803_ROM_SIZE) < 0) {
+        log_error(drv803_log, "Could not load printer charset '%s'.", MPS803_ROM_NAME);
+        return -1;
+    }
+
+    drv_mps803[prnr].char_height = 7;
+    drv_mps803[prnr].char_width = MPS803_BYTES_PER_CHAR;
+    drv_mps803[prnr].page_width_dots = MPS803_PAGE_WIDTH_DOTS;
+    drv_mps803[prnr].page_height_dots = MPS803_PAGE_HEIGHT_DOTS;
+    drv_mps803[prnr].model_sa_features = 0;
+    drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_NEW_ENHANCE | CTRL_FEATURE_BIT_IMAGE_PRINTING;
+    drv_mps803[prnr].lookup_method = 0;
+
+    output_parameter.maxcol = MPS803_PAGE_WIDTH_DOTS;
+    output_parameter.maxrow = MPS803_PAGE_HEIGHT_DOTS;
+    output_parameter.dpi_x = 60;    /* mps803 has different horizontal & vertical dpi - see pg 49 of the manual part H. */
+    output_parameter.dpi_y = 72;    /* NOTE - mixed dpi might not be liked by some image viewers */
+    output_parameter.palette = palette;
+
+    convert_rom_char_160(&drv_mps803[prnr], 0xc3f);
 #ifdef DEBUG_MPS803
-        dump_printer_charset(&drv_mps803[prnr]);
+    dump_printer_charset(&drv_mps803[prnr]);
 #endif
-        drv_mps803[prnr].char_height = 7;
-        drv_mps803[prnr].char_width = MPS803_BYTES_PER_CHAR;
-        drv_mps803[prnr].page_width_dots = MPS803_PAGE_WIDTH_DOTS;
-        drv_mps803[prnr].page_height_dots = MPS803_PAGE_HEIGHT_DOTS;
-        drv_mps803[prnr].model_sa_features = 0;
-        drv_mps803[prnr].model_ctrl_features = CTRL_FEATURE_NEW_ENHANCE | CTRL_FEATURE_BIT_IMAGE_PRINTING;
-        drv_mps803[prnr].lookup_method = 0;
-        return output_select_open(prnr, &output_parameter);
+
+    drv_mps803[prnr].first_open_type = 0;
+
+    return output_select_open(prnr, &output_parameter);
+}
+
+static int drv_mps803_open(unsigned int prnr, unsigned int secondary)
+{
+    DBG(("drv_mps803_open(prnr:%u, secondary:%u)", prnr, secondary));
+    if (secondary == DRIVER_FIRST_OPEN) {
+        drv_mps803[prnr].first_open_type = 803;
+        return 0;
     }
-    DBG(("drv_mps803_open(prnr:%u, secondary:%u)", prnr, secondary));
     return drv_common_open(prnr, secondary);
 }
 
@@ -1300,14 +1414,47 @@
 {
     DBG(("drv_mps803_select(%u)", prnr));
     output_select_close(prnr);
+
     return drv_mps803_open(prnr, DRIVER_FIRST_OPEN);
 }
 
 /* ------------------------------------------------------------------------- */
 
+static int drv_first_open(unsigned int prnr)
+{
+    DBG(("drv_first_open(prnr:%u first_open_type:%d)", prnr, drv_mps803[prnr].first_open_type));
+
+    if ((palette == NULL) && (mps803_palette_init() < 0)) {
+        return -1;
+    }
+
+    switch (drv_mps803[prnr].first_open_type) {
+        case 801:
+            return drv_mps801_first_open(prnr);
+        case 802:
+            return drv_mps802_first_open(prnr);
+        case 803:
+            return drv_mps803_first_open(prnr);
+        case 2022:
+            return drv_2022_first_open(prnr);
+        case 4023:
+            return drv_4023_first_open(prnr);
+        case 8023:
+            return drv_8023_first_open(prnr);
+        case 0:
+            return 0;
+    }
+    return -1;
+}
+
+/* ------------------------------------------------------------------------- */
+
 static void drv_mps803_close(unsigned int prnr, unsigned int secondary)
 {
     DBG(("drv_mps803_close(%u,%u)", prnr, secondary));
+    if (drv_first_open(prnr) < 0) {
+        return;
+    }
     output_select_close(prnr);
 }
 
@@ -1319,7 +1466,10 @@
 
 static int drv_mps803_putc(unsigned int prnr, unsigned int secondary, uint8_t b)
 {
-    /* DBG(("drv_mps803_putc(%u,%u:$%02x)", prnr, secondary, b)); */
+    DBG(("drv_mps803_putc(%u,%u:$%02x)", prnr, secondary, b));
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
     mps_engine_putc(&drv_mps803[prnr], prnr, secondary, b);
     return 0;
 }
@@ -1327,6 +1477,9 @@
 static int drv_mps803_getc(unsigned int prnr, unsigned int secondary, uint8_t *b)
 {
     DBG(("drv_mps803_getc(%u,%u)", prnr, secondary));
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
     return output_select_getc(prnr, b);
 }
 
@@ -1333,6 +1486,9 @@
 static int drv_mps803_flush(unsigned int prnr, unsigned int secondary)
 {
     /* DBG(("drv_mps803_flush(%u,%u)", prnr, secondary)); */
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
     return output_select_flush(prnr);
 }
 
@@ -1339,6 +1495,11 @@
 static int drv_mps803_formfeed(unsigned int prnr)
 {
     DBG(("drv_mps803_formfeed(%u)", prnr));
+#if 0 /* do not auto-init on formfeed, avoid superflous init at shutdown */
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
+#endif
     return output_select_formfeed(prnr);;
 }
 
@@ -1504,23 +1665,8 @@
 
 int drv_mps803_init(void)
 {
-    const char *color_names[2] = {"Black", "White"};
-
     drv803_log = log_open("MPS");
 
-    /* FIXME: rename the palette somehow? */
-    palette = palette_create(2, color_names);
-
-    if (palette == NULL) {
-        return -1;
-    }
-
-    if (palette_load("mps803.vpl", "PRINTER", palette) < 0) {
-        log_error(drv803_log, "Cannot load palette file `%s'.",
-                  "mps803.vpl");
-        return -1;
-    }
-
     return 0;
 }
 
@@ -1528,4 +1674,5 @@
 {
     DBG(("drv_mps803_shutdown"));
     palette_free(palette);
+    palette = NULL;
 }

Modified: trunk/vice/src/printerdrv/drv-nl10.c
===================================================================
--- trunk/vice/src/printerdrv/drv-nl10.c	2025-08-27 09:02:36 UTC (rev 45744)
+++ trunk/vice/src/printerdrv/drv-nl10.c	2025-08-31 13:34:57 UTC (rev 45745)
@@ -106,6 +106,8 @@
     int col_nr, line_nr;
     int isopen, mode, gfx_mode, gfx_count;
     int linespace; /* in 1/216 inch */
+
+    int first_open_type;    /* if not 0, the driver will initialize itself (for the given type) if needed */
 } nl10_t;
 
 
@@ -265,8 +267,12 @@
 static void reset_hard(nl10_t *nl10)
 {
     reset(nl10);
-    memset(nl10->char_ram, 0, 12 * 96);
-    memset(nl10->char_ram_nlq, 0, 47 * 96);
+    if (nl10->char_ram) {
+        memset(nl10->char_ram, 0, 12 * 96);
+    }
+    if (nl10->char_ram_nlq) {
+        memset(nl10->char_ram_nlq, 0, 47 * 96);
+    }
 }
 
 
@@ -1928,26 +1934,79 @@
 /* ------------------------------------------------------------------------- */
 /* Interface to the upper layer.  */
 
-static int drv_nl10_open(unsigned int prnr, unsigned int secondary)
+static int nl10_palette_init(void)
 {
-    nl10_t *nl10 = &(drv_nl10[prnr]);
+    const char *color_names[2] = {"Black", "White"};
 
-    if (secondary == DRIVER_FIRST_OPEN) {
-        DBG(("drv_nl10_open(prnr:%u secondary:DRIVER_FIRST_OPEN) device:%u", prnr, 4 + prnr));
-        output_parameter_t output_parameter;
+    /* FIXME: rename the palette somehow? */
+    palette = palette_create(2, color_names);
 
-        output_parameter.maxcol = MAX_COL;
-        output_parameter.maxrow = MAX_ROW;
-        output_parameter.dpi_x = 300;
-        output_parameter.dpi_y = 300;
-        output_parameter.palette = palette;
+    if (palette == NULL) {
+        return -1;
+    }
 
-        drv_nl10[prnr].pos_y = 0;
-        drv_nl10[prnr].pos_y_pix = 0;
-        drv_nl10[prnr].isopen = 1;
+    if (palette_load("nl10.vpl", "PRINTER", palette) < 0) {
+        log_error(drvnl10_log, "Cannot load palette file `%s'.",
+                  "nl10.vpl");
+        return -1;
+    }
 
-        return output_select_open(prnr, &output_parameter);
+    return 0;
+}
+
+static int drv_nl10_first_open(unsigned int prnr)
+{
+    int i;
+    DBG(("drv_nl10_first_open(prnr:%u secondary:DRIVER_FIRST_OPEN) device:%u", prnr, 4 + prnr));
+    output_parameter_t output_parameter;
+
+    /* allocate RAM buffers */
+    for (i = 0; i < NUM_OUTPUT_SELECT; i++) {
+        if (drv_nl10[i].char_ram == NULL) {
+            drv_nl10[i].char_ram = lib_malloc(96 * 12);
+            memset(drv_nl10[i].char_ram, 0, 12 * 96);
+        }
+        if (drv_nl10[i].char_ram_nlq == NULL) {
+            drv_nl10[i].char_ram_nlq = lib_malloc(96 * 47);
+            memset(drv_nl10[i].char_ram_nlq, 0, 47 * 96);
+        }
+        reset_hard(&(drv_nl10[i]));
+        drv_nl10[i].isopen = 0;
     }
+
+    /* load ROM, init charset */
+    if (drv_nl10_init_charset() < 0) {
+        return -1;
+    }
+
+    /* load palette (if needed) */
+    if ((palette == NULL) && (nl10_palette_init() < 0)) {
+        return -1;
+    }
+
+    output_parameter.maxcol = MAX_COL;
+    output_parameter.maxrow = MAX_ROW;
+    output_parameter.dpi_x = 300;
+    output_parameter.dpi_y = 300;
+    output_parameter.palette = palette;
+
+    drv_nl10[prnr].pos_y = 0;
+    drv_nl10[prnr].pos_y_pix = 0;
+    drv_nl10[prnr].isopen = 1;
+
+    drv_nl10[prnr].first_open_type = 0;
+
+    return output_select_open(prnr, &output_parameter);
+}
+
+static int drv_nl10_open(unsigned int prnr, unsigned int secondary)
+{
+    nl10_t *nl10 = &(drv_nl10[prnr]);
+
+    if (secondary == DRIVER_FIRST_OPEN) {
+        drv_nl10[prnr].first_open_type = 10;
+        return 0;
+    }
     DBG(("drv_nl10_open(prnr:%u secondary:%u) device:%u", prnr, secondary, 4 + prnr));
 
     if (secondary == 7) {
@@ -1961,9 +2020,29 @@
     return 0;
 }
 
+static int drv_first_open(unsigned int prnr)
+{
+    DBG(("drv_first_open(prnr:%u first_open_type:%d)", prnr, drv_nl10[prnr].first_open_type));
+
+    if ((palette == NULL) && (nl10_palette_init() < 0)) {
+        return -1;
+    }
+
+    switch (drv_nl10[prnr].first_open_type) {
+        case 10:
+            return drv_nl10_first_open(prnr);
+        case 0:
+            return 0;
+    }
+    return -1;
+}
+
 static void drv_nl10_close(unsigned int prnr, unsigned int secondary)
 {
     DBG(("drv_nl10_close(prnr:%u secondary:%u) device:%u", prnr, secondary, 4 + prnr));
+    if (drv_first_open(prnr) < 0) {
+        return;
+    }
     /* cannot call output_select_close() here since it would eject the
        current page, which is not what "close"ing a channel to a real
        printer does */
@@ -1976,6 +2055,9 @@
 
 static int drv_nl10_putc(unsigned int prnr, unsigned int secondary, uint8_t b)
 {
+    if (drv_first_open(prnr) < 0) {
+        return 0;
+    }
     print_char(&drv_nl10[prnr], prnr, b);
     return 0;
 }
@@ -1982,6 +2064,9 @@
 
 static int drv_nl10_getc(unsigned int prnr, unsigned int secondary, uint8_t *b)
 {
+    if (drv_first_open(prnr) < 0) {
+        return 0;
+    }
     return 0x80;
 }
 
@@ -1988,6 +2073,9 @@
 static int drv_nl10_flush(unsigned int prnr, unsigned int secondary)
 {
     DBG(("drv_nl10_flush(prnr:%u secondary:%u) device:%u", prnr, secondary, 4 + prnr));
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
     return 0;
 }
 
@@ -1995,6 +2083,11 @@
 {
     DBG(("drv_nl10_formfeed(prnr:%u) device:%u", prnr, 4 + prnr));
     nl10_t *nl10 = &(drv_nl10[prnr]);
+#if 0 /* do not auto-init on formfeed, avoid superflous init at shutdown */
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
+#endif
     if (nl10->isopen) {
         formfeed(nl10, prnr);
     }
@@ -2004,6 +2097,9 @@
 static int drv_nl10_select(unsigned int prnr)
 {
     DBG(("drv_nl10_select(prnr:%u) device:%u", prnr, 4 + prnr));
+    if (drv_first_open(prnr) < 0) {
+        return -1;
+    }
     if ((prnr == PRINTER_USERPORT) && (userport_get_device() == USERPORT_DEVICE_PRINTER)) {
         return drv_nl10_open(prnr, DRIVER_FIRST_OPEN);
     }
@@ -2038,41 +2134,10 @@
 
 int drv_nl10_init(void)
 {
-    int i;
-    static const char *color_names[2] =
-    {
-        "Black", "White"
-    };
-
     DBG(("drv_nl10_init"));
 
     drvnl10_log = log_open("NL10");
 
-    for (i = 0; i < NUM_OUTPUT_SELECT; i++) {
-        drv_nl10[i].char_ram = lib_malloc(96 * 12);
-        drv_nl10[i].char_ram_nlq = lib_malloc(96 * 47);
-        reset_hard(&(drv_nl10[i]));
-        drv_nl10[i].isopen = 0;
-    }
-
-    if (drv_nl10_init_charset() < 0) {
-        return -1;
-    }
-
-    palette = palette_create(2, color_names);
-
-    if (palette == NULL) {
-        return -1;
-    }
-
-    if (palette_load("nl10.vpl", "PRINTER", palette) < 0) {
-        log_error(drvnl10_log, "Cannot load palette file `%s'.",
-                  "nl10.vpl");
-        return -1;
-    }
-
-    log_message(drvnl10_log, "Printer driver initialized.");
-
     return 0;
 }
 
@@ -2079,10 +2144,11 @@
 void drv_nl10_shutdown(void)
 {
     int i;
+    DBG(("drv_nl10_shutdown"));
+
     palette_free(palette);
+    palette = NULL;
 
-    DBG(("drv_nl10_shutdown"));
-
     for (i = 0; i < NUM_OUTPUT_SELECT; i++) {
         if (drv_nl10[i].isopen) {
             output_select_close(i);
@@ -2090,6 +2156,8 @@
 
         lib_free(drv_nl10[i].char_ram);
         lib_free(drv_nl10[i].char_ram_nlq);
+        drv_nl10[i].char_ram = NULL;
+        drv_nl10[i].char_ram_nlq = NULL;
     }
 }
 
@@ -2257,6 +2325,9 @@
 
 /* -------------------------------------------------------------------------- */
 
+/* loads drv_nl10_rom,
+ * inits drv_nl10_charset_nlq, drv_nl10_charset_nlq_italic
+ */
 static int drv_nl10_init_charset(void)
 {
     char *name = NL10_ROM_NAME;
@@ -2263,7 +2334,7 @@
     int i, j;
 
     DBG(("drv_nl10_init_charset"));
-
+    /* NOTE: we could dynamically allocate drv_nl10_charset_nlq and -_italic here */
     memset(drv_nl10_charset_nlq, 0, CHARSET_SIZE * 47);
     memset(drv_nl10_charset_nlq_italic, 0, CHARSET_SIZE * 47);
 

Modified: trunk/vice/src/printerdrv/printer.c
===================================================================
--- trunk/vice/src/printerdrv/printer.c	2025-08-27 09:02:36 UTC (rev 45744)
+++ trunk/vice/src/printerdrv/printer.c	2025-08-31 13:34:57 UTC (rev 45745)
@@ -62,8 +62,10 @@
         || drv_raw_init_resources() < 0
         || driver_select_init_resources() < 0
         || machine_printer_resources_init() < 0) {
+        DBG(("printer_resources_init (failed)"));
         return -1;
     }
+    DBG(("printer_resources_init (OK)"));
     return 0;
 }
 
@@ -108,6 +110,7 @@
 
 void printer_init(void)
 {
+    DBG(("printer_init"));
     output_graphics_init();
     drv_ascii_init();
     drv_mps803_init();
@@ -116,6 +119,7 @@
     drv_raw_init();
     driver_select_init();
     machine_printer_init();
+    DBG(("printer_init (done)"));
 }
 
 void printer_reset(void)

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.

Revision: 45744
          http://sourceforge.net/p/vice-emu/code/45744
Author:   gpz
Date:     2025-08-27 09:02:36 +0000 (Wed, 27 Aug 2025)
Log Message:
-----------
get rid of static buffers for the drive ROMs, load ROMs on demand directly into the drive rom space instead.

Modified Paths:
--------------
    trunk/vice/src/c64/c64drive.c
    trunk/vice/src/drive/drive.c
    trunk/vice/src/drive/driverom.c
    trunk/vice/src/drive/driverom.h
    trunk/vice/src/drive/drivetypes.h
    trunk/vice/src/drive/iec/iec.c
    trunk/vice/src/drive/iec/iecrom.c
    trunk/vice/src/drive/iec128dcr/iec128dcrrom.c
    trunk/vice/src/drive/ieee/ieee.c
    trunk/vice/src/drive/ieee/ieeerom.c
    trunk/vice/src/drive/tcbm/tcbm.c
    trunk/vice/src/drive/tcbm/tcbmrom.c

Modified: trunk/vice/src/c64/c64drive.c
===================================================================
--- trunk/vice/src/c64/c64drive.c	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/c64/c64drive.c	2025-08-27 09:02:36 UTC (rev 45744)
@@ -103,6 +103,7 @@
     iec_drive_idling_method(dnr);
 }
 
+/* test ROMs for existence, size */
 void machine_drive_rom_load(void)
 {
     iec_drive_rom_load();
@@ -109,6 +110,7 @@
     ieee_drive_rom_load();
 }
 
+/* setup (=load) the ROM for a given disk unit */
 void machine_drive_rom_setup_image(unsigned int dnr)
 {
     iec_drive_rom_setup_image(dnr);
@@ -115,6 +117,7 @@
     ieee_drive_rom_setup_image(dnr);
 }
 
+/* check if the drive ROM is available for a given drive type, returns -1 on error */
 int machine_drive_rom_check_loaded(unsigned int type)
 {
     if (iec_drive_rom_check_loaded(type) == 0) {
@@ -127,6 +130,7 @@
     return -1;
 }
 
+/* perform checksum check on ROM for given disk unit nr */
 void machine_drive_rom_do_checksum(unsigned int dnr)
 {
     iec_drive_rom_do_checksum(dnr);

Modified: trunk/vice/src/drive/drive.c
===================================================================
--- trunk/vice/src/drive/drive.c	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/drive.c	2025-08-27 09:02:36 UTC (rev 45744)
@@ -195,6 +195,7 @@
 
     }
 
+    /* NOTE: this will not actually load the images yet, only check of the ROMs exist */
     driverom_load_images();
     /* Do not error out if _SOME_ images are not found, ie. FD2K/4K, CMDHD */
 #if 0
@@ -207,8 +208,7 @@
     }
 #endif
 
-    log_message(drive_log, "Finished loading ROM images.");
-    rom_loaded = 1;
+    rom_loaded = 1; /* mark drive ROMs being tested OK */
 
     for (unit = 0; unit < NUM_DISK_UNITS; unit++) {
         diskunit_context_t *diskunit = diskunit_context[unit];
@@ -220,9 +220,12 @@
             resources_set_int_sprintf("Drive%uType", DRIVE_TYPE_NONE, unit + 8);
         }
 
+        /* This will trigger loading the ROM if needed */
         machine_drive_rom_setup_image(unit);
     }
 
+    log_message(drive_log, "Finished loading ROM images.");
+
     for (unit = 0; unit < NUM_DISK_UNITS; unit++) {
         diskunit_context_t *diskunit = diskunit_context[unit];
         int d;

Modified: trunk/vice/src/drive/driverom.c
===================================================================
--- trunk/vice/src/drive/driverom.c	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/driverom.c	2025-08-27 09:02:36 UTC (rev 45744)
@@ -44,7 +44,7 @@
 #include "snapshot.h"
 
 #ifdef DBGDRIVEROM
-#define DBG(x)  printf x
+#define DBG(x)  log_printf x
 #else
 #define DBG(x)
 #endif
@@ -73,7 +73,78 @@
 /* If nonzero, we are far enough in init that we can load ROMs.  */
 static int drive_rom_load_ok = 0;
 
+/* like driverom_load, but doesn't actually load anything, and only tests if the
+   file exists and matches the given size(s) */
+int driverom_test_load(const char *resource_name, unsigned int *loaded,
+                        int min, int max, const char *name,
+                        unsigned int type, unsigned int *size)
+{
+    const char *rom_name = NULL;
+    int filesize;
+    unsigned int dnr;
 
+    DBG(("driverom_test_load res:%s loaded:%u min:%d max:%d name:%s type:%u size:%u",
+       resource_name, *loaded, min, max, name, type, size ? *size : 0));
+
+    if (!drive_rom_load_ok) {
+        return 0;
+    }
+
+    resources_get_string(resource_name, &rom_name);
+
+    DBG(("driverom_test_load rom_name: %s", rom_name));
+
+    if (size != NULL) {
+        *size = 0;
+    }
+    if (loaded != NULL) {
+        *loaded = 0;
+    }
+
+    filesize = sysfile_locate(rom_name, "DRIVES", NULL);
+
+    if (filesize < 0) {
+#if 1
+        log_error(driverom_log, "%s ROM image not found. "
+                  "Hardware-level %s emulation is not available.", name, name);
+#endif
+        goto exiterror;
+    }
+
+    if ((min < max)) {
+        if ((filesize > max)) {
+#if 1
+            log_error(driverom_log, "%s ROM image too large. "
+                    "Hardware-level %s emulation is not available.", name, name);
+#endif
+            goto exiterror;
+        }
+    }
+
+    if (loaded != NULL) {
+        *loaded = 1;
+    }
+    if (size != NULL) {
+        *size = (unsigned int)filesize;
+    }
+    return 0;
+
+exiterror:
+#if 1
+    /* FIXME: this should probably no more happen here */
+    /* disable the drives that used the ROM which could not be loaded */
+    for (dnr = 0; dnr < NUM_DISK_UNITS; dnr++) {
+        diskunit_context_t *unit = diskunit_context[dnr];
+        if (unit->type == type) {
+            unit->type = DRIVE_TYPE_NONE;
+            drive_disable(diskunit_context[dnr]);
+            machine_bus_status_drivetype_set(dnr + 8, 0);
+        }
+    }
+#endif
+    return -1;
+}
+
 int driverom_load(const char *resource_name, uint8_t *drive_rom, unsigned
                   int *loaded, int min, int max, const char *name,
                   unsigned int type, unsigned int *size)
@@ -82,7 +153,7 @@
     int filesize;
     unsigned int dnr;
 
-    DBG(("driverom_load res:%s loaded:%u min:%d max:%d name:%s type:%u size:%u\n",
+    DBG(("driverom_load res:%s loaded:%u min:%d max:%d name:%s type:%u size:%u",
        resource_name, *loaded, min, max, name, type, size ? *size : 0));
 
     if (!drive_rom_load_ok) {
@@ -91,30 +162,21 @@
 
     resources_get_string(resource_name, &rom_name);
 
-    DBG(("driverom_load rom_name: %s\n", rom_name));
+    DBG(("driverom_load rom_name: %s", rom_name));
 
+    if (size != NULL) {
+        *size = 0;
+    }
+    if (loaded != NULL) {
+        *loaded = 0;
+    }
+
     filesize = sysfile_load(rom_name, "DRIVES", drive_rom, min, max);
 
     if (filesize < 0) {
         log_error(driverom_log, "%s ROM image not found. "
                   "Hardware-level %s emulation is not available.", name, name);
-
-        if (size != NULL) {
-            *size = 0;
-        }
-        if (loaded != NULL) {
-            *loaded = 0;
-        }
-        /* disable the drives that used the ROM which could not be loaded */
-        for (dnr = 0; dnr < NUM_DISK_UNITS; dnr++) {
-            diskunit_context_t *unit = diskunit_context[dnr];
-            if (unit->type == type) {
-                unit->type = DRIVE_TYPE_NONE;
-                drive_disable(diskunit_context[dnr]);
-                machine_bus_status_drivetype_set(dnr + 8, 0);
-            }
-        }
-        return -1;
+        goto exiterror;
     }
 
     *loaded = 1;
@@ -121,17 +183,20 @@
     if (size != NULL) {
         *size = (unsigned int)filesize;
     }
+
     /* Align to the end of available space */
     if ((filesize <= min) && (min < max)) {
-        DBG(("driverom_load align drive rom\n"));
+        DBG(("driverom_load align drive rom"));
+        /* sysfile_load loaded the block to the top end of the buffer */
         memmove(drive_rom, &drive_rom[max - min], min);
     }
 
+    /* reset all drives that use the loaded ROM */
     for (dnr = 0; dnr < NUM_DISK_UNITS; dnr++) {
         diskunit_context_t *unit = diskunit_context[dnr];
 
         if (unit->type == type) {
-            DBG(("driverom_load prepare drive rom and reset\n"));
+            DBG(("driverom_load prepare drive rom and reset"));
             machine_drive_rom_setup_image(dnr);
             driverom_initialize_traps(diskunit_context[dnr]);
             drive_cpu_trigger_reset(dnr);
@@ -138,6 +203,18 @@
         }
     }
     return 0;
+
+exiterror:
+    /* disable the drives that used the ROM which could not be loaded */
+    for (dnr = 0; dnr < NUM_DISK_UNITS; dnr++) {
+        diskunit_context_t *unit = diskunit_context[dnr];
+        if (unit->type == type) {
+            unit->type = DRIVE_TYPE_NONE;
+            drive_disable(diskunit_context[dnr]);
+            machine_bus_status_drivetype_set(dnr + 8, 0);
+        }
+    }
+    return -1;
 }
 
 int driverom_load_images(void)
@@ -163,7 +240,7 @@
     unit->trap = -1;
     unit->trapcont = -1;
 
-    DBG(("driverom_initialize_traps type: %u trap idle: %s\n", unit->type,
+    DBG(("driverom_initialize_traps type: %u trap idle: %s", unit->type,
            unit->idling_method == DRIVE_IDLE_TRAP_IDLE ? "enabled" : "disabled"));
 
     if (unit->idling_method != DRIVE_IDLE_TRAP_IDLE) {

Modified: trunk/vice/src/drive/driverom.h
===================================================================
--- trunk/vice/src/drive/driverom.h	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/driverom.h	2025-08-27 09:02:36 UTC (rev 45744)
@@ -59,6 +59,9 @@
 int driverom_load(const char *resource_name, uint8_t *drive_rom, unsigned
                   int *loaded, int min, int max, const char *name,
                   unsigned int type, unsigned int *size);
+int driverom_test_load(const char *resource_name, unsigned int *loaded,
+                       int min, int max, const char *name,
+                       unsigned int type, unsigned int *size);
 int driverom_load_images(void);
 int driverom_snapshot_write(struct snapshot_s *s, const struct drive_s *drive);
 int driverom_snapshot_read(struct snapshot_s *s, struct drive_s *drive);

Modified: trunk/vice/src/drive/drivetypes.h
===================================================================
--- trunk/vice/src/drive/drivetypes.h	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/drivetypes.h	2025-08-27 09:02:36 UTC (rev 45744)
@@ -236,6 +236,9 @@
     /* Current ROM image.  */
     uint8_t rom[DRIVE_ROM_SIZE];
 
+    /* What ROM type do we have loaded?  */
+    unsigned int rom_type;
+
     /* Current trap ROM image.  */
     uint8_t trap_rom[DRIVE_ROM_SIZE];
     int trap, trapcont;

Modified: trunk/vice/src/drive/iec/iec.c
===================================================================
--- trunk/vice/src/drive/iec/iec.c	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/iec/iec.c	2025-08-27 09:02:36 UTC (rev 45744)
@@ -173,6 +173,7 @@
     lib_free(tmp);
 }
 
+/* test all ROMs for existence, size */
 void iec_drive_rom_load(void)
 {
     iecrom_load_1540();
@@ -186,11 +187,13 @@
     iecrom_load_CMDHD();
 }
 
+/* setup (=load) the ROM for a given disk unit nr */
 void iec_drive_rom_setup_image(unsigned int dnr)
 {
     iecrom_setup_image(diskunit_context[dnr]);
 }
 
+/* check if the drive ROM is available for a given drive type, returns -1 on error */
 int iec_drive_rom_check_loaded(unsigned int type)
 {
     return iecrom_check_loaded(type);

Modified: trunk/vice/src/drive/iec/iecrom.c
===================================================================
--- trunk/vice/src/drive/iec/iecrom.c	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/iec/iecrom.c	2025-08-27 09:02:36 UTC (rev 45744)
@@ -37,7 +37,15 @@
 #include "resources.h"
 #include "sysfile.h"
 
+/* #define DEBUG_IECROM */
 
+#ifdef DEBUG_IECROM
+#define DBG(x)  log_printf x
+#else
+#define DBG(x)
+#endif
+
+
 #define DRIVE_ROM1541_CHECKSUM      1991711
 
 /* NOTE: 1571CR is handled in iec128dcr/iec128dcrrom.c */
@@ -45,19 +53,7 @@
 /* Logging goes here.  */
 static log_t iecrom_log;
 
-static uint8_t drive_rom1540[DRIVE_ROM1540_SIZE_EXPANDED];
-static uint8_t drive_rom1541[DRIVE_ROM1541_SIZE_EXPANDED];
-static uint8_t drive_rom1541ii[DRIVE_ROM1541II_SIZE_EXPANDED];
-
-static uint8_t drive_rom1570[DRIVE_ROM1570_SIZE];
-static uint8_t drive_rom1571[DRIVE_ROM1571_SIZE];
-static uint8_t drive_rom1581[DRIVE_ROM1581_SIZE];
-
-static uint8_t drive_rom2000[DRIVE_ROM2000_SIZE];
-static uint8_t drive_rom4000[DRIVE_ROM4000_SIZE];
-static uint8_t drive_romCMDHD[DRIVE_ROMCMDHD_SIZE];
-
-/* If nonzero, the ROM image has been loaded.  */
+/* If nonzero, the ROM image is available  */
 static unsigned int rom1540_loaded = 0;
 static unsigned int rom1541_loaded = 0;
 static unsigned int rom1541ii_loaded = 0;
@@ -68,20 +64,20 @@
 static unsigned int rom4000_loaded = 0;
 static unsigned int romCMDHD_loaded = 0;
 
-static unsigned int drive_rom1540_size;
-static unsigned int drive_rom1541_size;
-static unsigned int drive_rom1541ii_size;
+static unsigned int drive_rom1540_size = 0;
+static unsigned int drive_rom1541_size = 0;
+static unsigned int drive_rom1541ii_size = 0;
 
-
-static int iecrom_do_1541_checksum(void)
+static int iecrom_do_1541_checksum(diskunit_context_t *unit)
 {
     unsigned int i;
     unsigned long s;
+    DBG(("iecrom_do_1541_checksum type: %04x", unit->type));
 
     /* Calculate ROM checksum.  */
     for (i = DRIVE_ROM1541_SIZE_EXPANDED - drive_rom1541_size, s = 0;
          i < DRIVE_ROM1541_SIZE_EXPANDED; i++) {
-        s += drive_rom1541[i];
+        s += unit->rom[i];
     }
 
     if (s != DRIVE_ROM1541_CHECKSUM) {
@@ -91,9 +87,10 @@
     return 0;
 }
 
+/* test ROM for existence, size */
 int iecrom_load_1540(void)
 {
-    return driverom_load("DosName1540", drive_rom1540, &rom1540_loaded,
+    return driverom_test_load("DosName1540", &rom1540_loaded,
             DRIVE_ROM1540_SIZE, DRIVE_ROM1540_SIZE_EXPANDED, "1540",
             DRIVE_TYPE_1540, &drive_rom1540_size);
 }
@@ -100,7 +97,7 @@
 
 int iecrom_load_1541(void)
 {
-    return driverom_load("DosName1541", drive_rom1541, &rom1541_loaded,
+    return driverom_test_load("DosName1541", &rom1541_loaded,
             DRIVE_ROM1541_SIZE, DRIVE_ROM1541_SIZE_EXPANDED, "1541",
             DRIVE_TYPE_1541, &drive_rom1541_size);
 }
@@ -107,7 +104,7 @@
 
 int iecrom_load_1541ii(void)
 {
-    return driverom_load("DosName1541ii", drive_rom1541ii,
+    return driverom_test_load("DosName1541ii",
             &rom1541ii_loaded, DRIVE_ROM1541II_SIZE,
             DRIVE_ROM1541II_SIZE_EXPANDED, "1541-II", DRIVE_TYPE_1541II,
             &drive_rom1541ii_size);
@@ -115,106 +112,129 @@
 
 int iecrom_load_1570(void)
 {
-    return driverom_load("DosName1570", drive_rom1570, &rom1570_loaded,
+    return driverom_test_load("DosName1570", &rom1570_loaded,
             DRIVE_ROM1570_SIZE, DRIVE_ROM1570_SIZE, "1570", DRIVE_TYPE_1570, NULL);
 }
 
 int iecrom_load_1571(void)
 {
-    return driverom_load("DosName1571", drive_rom1571, &rom1571_loaded,
+    return driverom_test_load("DosName1571", &rom1571_loaded,
             DRIVE_ROM1571_SIZE, DRIVE_ROM1571_SIZE, "1571", DRIVE_TYPE_1571, NULL);
 }
 
 int iecrom_load_1581(void)
 {
-    return driverom_load("DosName1581", drive_rom1581, &rom1581_loaded,
+    return driverom_test_load("DosName1581", &rom1581_loaded,
             DRIVE_ROM1581_SIZE, DRIVE_ROM1581_SIZE, "1581", DRIVE_TYPE_1581, NULL);
 }
 
 int iecrom_load_2000(void)
 {
-    return driverom_load("DosName2000", drive_rom2000, &rom2000_loaded,
+    return driverom_test_load("DosName2000", &rom2000_loaded,
             DRIVE_ROM2000_SIZE, DRIVE_ROM2000_SIZE, "2000", DRIVE_TYPE_2000, NULL);
 }
 
 int iecrom_load_4000(void)
 {
-    return driverom_load("DosName4000", drive_rom4000, &rom4000_loaded,
+    return driverom_test_load("DosName4000", &rom4000_loaded,
             DRIVE_ROM4000_SIZE, DRIVE_ROM4000_SIZE, "4000", DRIVE_TYPE_4000, NULL);
 }
 
 int iecrom_load_CMDHD(void)
 {
-    return driverom_load("DosNameCMDHD", drive_romCMDHD, &romCMDHD_loaded,
+    return driverom_test_load("DosNameCMDHD", &romCMDHD_loaded,
             DRIVE_ROMCMDHD_SIZE, DRIVE_ROMCMDHD_SIZE, "CMDHD", DRIVE_TYPE_CMDHD, NULL);
 }
 
+/* setup (=load) the ROM for a given disk unit */
 void iecrom_setup_image(diskunit_context_t *unit)
 {
+    unsigned int loaded = 0;
+    DBG(("iecrom_setup_image type %04x rom_loaded:%d rom_type: %04x", unit->type, rom_loaded, unit->rom_type));
     if (rom_loaded) {
 
-        switch (unit->type) {
-            case DRIVE_TYPE_1540:
-                if (drive_rom1540_size <= DRIVE_ROM1540_SIZE) {
-                    memcpy(unit->rom, &drive_rom1540[DRIVE_ROM1540_SIZE],
-                           DRIVE_ROM1540_SIZE);
-                    memcpy(&(unit->rom[DRIVE_ROM1540_SIZE]),
-                           &drive_rom1540[DRIVE_ROM1540_SIZE],
-                           DRIVE_ROM1540_SIZE);
-                } else {
-                    memcpy(unit->rom, drive_rom1540,
-                           DRIVE_ROM1540_SIZE_EXPANDED);
-                }
-                break;
-            case DRIVE_TYPE_1541:
-                if (drive_rom1541_size <= DRIVE_ROM1541_SIZE) {
-                    memcpy(unit->rom, &drive_rom1541[DRIVE_ROM1541_SIZE],
-                           DRIVE_ROM1541_SIZE);
-                    memcpy(&(unit->rom[DRIVE_ROM1541_SIZE]),
-                           &drive_rom1541[DRIVE_ROM1541_SIZE],
-                           DRIVE_ROM1541_SIZE);
-                } else {
-                    memcpy(unit->rom, drive_rom1541,
-                           DRIVE_ROM1541_SIZE_EXPANDED);
-                }
-                break;
-            case DRIVE_TYPE_1541II:
-                if (drive_rom1541ii_size <= DRIVE_ROM1541II_SIZE) {
-                    memcpy(unit->rom, &drive_rom1541ii[DRIVE_ROM1541II_SIZE],
-                           DRIVE_ROM1541II_SIZE);
-                    memcpy(&(unit->rom[DRIVE_ROM1541II_SIZE]),
-                           &drive_rom1541ii[DRIVE_ROM1541II_SIZE],
-                           DRIVE_ROM1541II_SIZE);
-                } else {
-                    memcpy(unit->rom, drive_rom1541ii,
-                           DRIVE_ROM1541II_SIZE_EXPANDED);
-                }
-                break;
-            case DRIVE_TYPE_1570:
-                memcpy(unit->rom, drive_rom1570, DRIVE_ROM1570_SIZE);
-                break;
-            case DRIVE_TYPE_1571:
-                memcpy(unit->rom, drive_rom1571, DRIVE_ROM1571_SIZE);
-                break;
-            case DRIVE_TYPE_1581:
-                memcpy(unit->rom, drive_rom1581, DRIVE_ROM1581_SIZE);
-                break;
-            case DRIVE_TYPE_2000:
-                memcpy(unit->rom, drive_rom2000, DRIVE_ROM2000_SIZE);
-                break;
-            case DRIVE_TYPE_4000:
-                memcpy(unit->rom, drive_rom4000, DRIVE_ROM4000_SIZE);
-                break;
-            case DRIVE_TYPE_CMDHD:
-                memcpy(unit->rom, drive_romCMDHD, DRIVE_ROMCMDHD_SIZE);
-                break;
-            default:
-                /* NOP */
-                break;
+        if (unit->rom_type != unit->type) {
+            /* set this here to avoid recursion */
+            unit->rom_type = unit->type;
+
+            switch (unit->type) {
+                case DRIVE_TYPE_1540:
+                    driverom_load("DosName1540", unit->rom, &loaded,
+                        DRIVE_ROM1540_SIZE, DRIVE_ROM1540_SIZE_EXPANDED, "1540",
+                        DRIVE_TYPE_1540, &drive_rom1540_size);
+                    if (drive_rom1540_size <= DRIVE_ROM1540_SIZE) {
+                        /* ROM was loaded to the upper part of the buffer */
+                        memcpy(unit->rom, &unit->rom[DRIVE_ROM1540_SIZE],
+                            DRIVE_ROM1540_SIZE);
+                    }
+                    break;
+                case DRIVE_TYPE_1541:
+                    driverom_load("DosName1541", unit->rom, &loaded,
+                        DRIVE_ROM1541_SIZE, DRIVE_ROM1541_SIZE_EXPANDED, "1541",
+                        DRIVE_TYPE_1541, &drive_rom1541_size);
+                    if (drive_rom1541_size <= DRIVE_ROM1541_SIZE) {
+                        /* ROM was loaded to the upper part of the buffer */
+                        memcpy(unit->rom, &unit->rom[DRIVE_ROM1541_SIZE],
+                            DRIVE_ROM1541_SIZE);
+                    }
+                    break;
+                case DRIVE_TYPE_1541II:
+                    driverom_load("DosName1541ii", unit->rom, &loaded,
+                        DRIVE_ROM1541II_SIZE, DRIVE_ROM1541II_SIZE_EXPANDED, "1541-II",
+                        DRIVE_TYPE_1541II, &drive_rom1541ii_size);
+                    if (drive_rom1541ii_size <= DRIVE_ROM1541II_SIZE) {
+                        /* ROM was loaded to the upper part of the buffer */
+                        memcpy(unit->rom, &unit->rom[DRIVE_ROM1541II_SIZE],
+                            DRIVE_ROM1541II_SIZE);
+                    }
+                    break;
+
+                case DRIVE_TYPE_1570:
+                    driverom_load("DosName1570", unit->rom, &loaded,
+                        DRIVE_ROM1570_SIZE, DRIVE_ROM1570_SIZE, "1570",
+                        DRIVE_TYPE_1570, NULL);
+                    break;
+                case DRIVE_TYPE_1571:
+                    driverom_load("DosName1571", unit->rom, &loaded,
+                        DRIVE_ROM1571_SIZE, DRIVE_ROM1571_SIZE, "1571",
+                        DRIVE_TYPE_1571, NULL);
+                    break;
+                case DRIVE_TYPE_1581:
+                    driverom_load("DosName1581", unit->rom, &loaded,
+                        DRIVE_ROM1581_SIZE, DRIVE_ROM1581_SIZE, "1581",
+                        DRIVE_TYPE_1581, NULL);
+                    break;
+                case DRIVE_TYPE_2000:
+                    driverom_load("DosName2000", unit->rom, &loaded,
+                        DRIVE_ROM2000_SIZE, DRIVE_ROM2000_SIZE, "2000",
+                        DRIVE_TYPE_2000, NULL);
+                    break;
+                case DRIVE_TYPE_4000:
+                    driverom_load("DosName4000", unit->rom, &loaded,
+                        DRIVE_ROM4000_SIZE, DRIVE_ROM4000_SIZE, "4000",
+                        DRIVE_TYPE_4000, NULL);
+                    break;
+                case DRIVE_TYPE_CMDHD:
+                    driverom_load("DosNameCMDHD", unit->rom, &loaded,
+                        DRIVE_ROMCMDHD_SIZE, DRIVE_ROMCMDHD_SIZE, "CMDHD",
+                        DRIVE_TYPE_CMDHD, NULL);
+                    break;
+
+                default:
+                    /* NOP */
+                    break;
+            }
+
+            /* if loading failed, set rom type to 0 */
+            if (!loaded) {
+                unit->rom_type = 0;
+            }
         }
+
     }
 }
 
+/* check if the drive ROM is available for a given drive type, returns -1 on error */
 int iecrom_check_loaded(unsigned int type)
 {
     switch (type) {
@@ -279,10 +299,12 @@
     return 0;
 }
 
+/* perform checksum check on ROM for given disk unit nr */
 void iecrom_do_checksum(diskunit_context_t *unit)
 {
+    DBG(("iecrom_do_checksum type: %04x", unit->type));
     if (unit->type == DRIVE_TYPE_1541) {
-        iecrom_do_1541_checksum();
+        iecrom_do_1541_checksum(unit);
     }
 }
 

Modified: trunk/vice/src/drive/iec128dcr/iec128dcrrom.c
===================================================================
--- trunk/vice/src/drive/iec128dcr/iec128dcrrom.c	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/iec128dcr/iec128dcrrom.c	2025-08-27 09:02:36 UTC (rev 45744)
@@ -41,30 +41,48 @@
 /* Logging goes here.  */
 static log_t iec128dcrrom_log;
 
-static uint8_t drive_rom1571cr[DRIVE_ROM1571CR_SIZE];
-
-/* If nonzero, the ROM image has been loaded.  */
+/* If nonzero, the ROM image is available  */
 static unsigned int rom1571cr_loaded = 0;
 
 
+/* test ROM for existence, size */
 int iec128dcrrom_load_1571cr(void)
 {
-    return driverom_load("DosName1571cr", drive_rom1571cr, &rom1571cr_loaded,
+    return driverom_test_load("DosName1571cr", &rom1571cr_loaded,
             DRIVE_ROM1571CR_SIZE, DRIVE_ROM1571CR_SIZE, "1571CR",
             DRIVE_TYPE_1571CR, NULL);
 }
 
+/* setup (=load) the ROM for a given disk unit */
 void iec128dcrrom_setup_image(diskunit_context_t *unit)
 {
+    unsigned int loaded = 0;
     if (rom_loaded) {
-        switch (unit->type) {
-            case DRIVE_TYPE_1571CR:
-                memcpy(unit->rom, drive_rom1571cr, DRIVE_ROM1571CR_SIZE);
-                break;
+
+        if (unit->rom_type != unit->type) {
+            /* set this here to avoid recursion */
+            unit->rom_type = unit->type;
+
+            switch (unit->type) {
+                case DRIVE_TYPE_1571CR:
+                    driverom_load("DosName1571cr", unit->rom, &loaded,
+                        DRIVE_ROM1571CR_SIZE, DRIVE_ROM1571CR_SIZE, "1571CR",
+                        DRIVE_TYPE_1571CR, NULL);
+                    break;
+                default:
+                    /* NOP */
+                    break;
+            }
+
+            /* if loading failed, set rom type to 0 */
+            if (!loaded) {
+                unit->rom_type = 0;
+            }
         }
     }
 }
 
+/* check if the drive ROM is available for a given drive type, returns -1 on error */
 int iec128dcrrom_check_loaded(unsigned int type)
 {
     switch (type) {

Modified: trunk/vice/src/drive/ieee/ieee.c
===================================================================
--- trunk/vice/src/drive/ieee/ieee.c	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/ieee/ieee.c	2025-08-27 09:02:36 UTC (rev 45744)
@@ -110,6 +110,7 @@
     riot2_setup_context(drv);
 }
 
+/* test all ROMs for existence, size */
 void ieee_drive_rom_load(void)
 {
     ieeerom_load_2031();
@@ -120,16 +121,19 @@
     ieeerom_load_9000();
 }
 
+/* setup (=load) the ROM for a given disk unit nr */
 void ieee_drive_rom_setup_image(unsigned int dnr)
 {
     ieeerom_setup_image(diskunit_context[dnr]);
 }
 
+/* check if the drive ROM is available for a given drive type, returns -1 on error */
 int ieee_drive_rom_check_loaded(unsigned int type)
 {
     return ieeerom_check_loaded(type);
 }
 
+/* perform checksum check on ROM for given disk unit nr */
 void ieee_drive_rom_do_checksum(unsigned int dnr)
 {
 }

Modified: trunk/vice/src/drive/ieee/ieeerom.c
===================================================================
--- trunk/vice/src/drive/ieee/ieeerom.c	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/ieee/ieeerom.c	2025-08-27 09:02:36 UTC (rev 45744)
@@ -41,14 +41,7 @@
 /* Logging goes here.  */
 static log_t ieeerom_log;
 
-static uint8_t drive_rom2031[DRIVE_ROM2031_SIZE];
-static uint8_t drive_rom1001[DRIVE_ROM1001_SIZE];
-static uint8_t drive_rom2040[DRIVE_ROM2040_SIZE];
-static uint8_t drive_rom3040[DRIVE_ROM3040_SIZE];
-static uint8_t drive_rom4040[DRIVE_ROM4040_SIZE];
-static uint8_t drive_rom9000[DRIVE_ROM9000_SIZE];
-
-/* If nonzero, the ROM image has been loaded.  */
+/* If nonzero, the ROM image is available  */
 static unsigned int rom2031_loaded = 0;
 static unsigned int rom2040_loaded = 0;
 static unsigned int rom3040_loaded = 0;
@@ -57,9 +50,10 @@
 static unsigned int rom9000_loaded = 0;
 
 
+/* test ROM for existence, size */
 int ieeerom_load_2031(void)
 {
-    return driverom_load("DosName2031", drive_rom2031, &rom2031_loaded,
+    return driverom_test_load("DosName2031", &rom2031_loaded,
             DRIVE_ROM2031_SIZE, DRIVE_ROM2031_SIZE, "2031",
             DRIVE_TYPE_2031, NULL);
 }
@@ -66,7 +60,7 @@
 
 int ieeerom_load_2040(void)
 {
-    return driverom_load("DosName2040", drive_rom2040, &rom2040_loaded,
+    return driverom_test_load("DosName2040", &rom2040_loaded,
             DRIVE_ROM2040_SIZE, DRIVE_ROM2040_SIZE, "2040",
             DRIVE_TYPE_2040, NULL);
 }
@@ -73,7 +67,7 @@
 
 int ieeerom_load_3040(void)
 {
-    return driverom_load("DosName3040", drive_rom3040, &rom3040_loaded,
+    return driverom_test_load("DosName3040", &rom3040_loaded,
             DRIVE_ROM3040_SIZE, DRIVE_ROM3040_SIZE, "3040",
             DRIVE_TYPE_3040, NULL);
 }
@@ -80,7 +74,7 @@
 
 int ieeerom_load_4040(void)
 {
-    return driverom_load("DosName4040", drive_rom4040, &rom4040_loaded,
+    return driverom_test_load("DosName4040", &rom4040_loaded,
             DRIVE_ROM4040_SIZE, DRIVE_ROM4040_SIZE, "4040",
             DRIVE_TYPE_4040, NULL);
 }
@@ -87,7 +81,7 @@
 
 int ieeerom_load_1001(void)
 {
-    return driverom_load("DosName1001", drive_rom1001, &rom1001_loaded,
+    return driverom_test_load("DosName1001", &rom1001_loaded,
             DRIVE_ROM1001_SIZE, DRIVE_ROM1001_SIZE, "1001/8050/8250",
             DRIVE_TYPE_1001, NULL);
 }
@@ -94,45 +88,82 @@
 
 int ieeerom_load_9000(void)
 {
-    return driverom_load("DosName9000", drive_rom9000, &rom9000_loaded,
+    return driverom_test_load("DosName9000", &rom9000_loaded,
             DRIVE_ROM9000_SIZE, DRIVE_ROM9000_SIZE, "D9090/9060",
             DRIVE_TYPE_9000, NULL);
 }
 
+/* setup (=load) the ROM for a given disk unit */
 void ieeerom_setup_image(diskunit_context_t *unit)
 {
+    unsigned int loaded = 0;
     if (rom_loaded) {
-        switch (unit->type) {
-            case DRIVE_TYPE_2031:
-                memcpy(&(unit->rom[0x4000]), drive_rom2031,
-                       DRIVE_ROM2031_SIZE);
-                break;
-            case DRIVE_TYPE_2040:
-                memcpy(&(unit->rom[DRIVE_ROM_SIZE - DRIVE_ROM2040_SIZE]),
-                       drive_rom2040, DRIVE_ROM2040_SIZE);
-                break;
-            case DRIVE_TYPE_3040:
-                memcpy(&(unit->rom[DRIVE_ROM_SIZE - DRIVE_ROM3040_SIZE]),
-                       drive_rom3040, DRIVE_ROM3040_SIZE);
-                break;
-            case DRIVE_TYPE_4040:
-                memcpy(&(unit->rom[DRIVE_ROM_SIZE - DRIVE_ROM4040_SIZE]),
-                       drive_rom4040, DRIVE_ROM4040_SIZE);
-                break;
-            case DRIVE_TYPE_1001:
-            case DRIVE_TYPE_8050:
-            case DRIVE_TYPE_8250:
-                memcpy(&(unit->rom[0x4000]), drive_rom1001,
-                       DRIVE_ROM1001_SIZE);
-                break;
-            case DRIVE_TYPE_9000:
-                memcpy(&(unit->rom[0x4000]), drive_rom9000,
-                       DRIVE_ROM9000_SIZE);
-                break;
+        if (unit->rom_type != unit->type) {
+            /* set this here to avoid recursion */
+            unit->rom_type = unit->type;
+
+            switch (unit->type) {
+                case DRIVE_TYPE_2031:
+                    driverom_load("DosName2031", unit->rom, &rom2031_loaded,
+                        DRIVE_ROM2031_SIZE, DRIVE_ROM2031_SIZE, "2031",
+                        DRIVE_TYPE_2031, NULL);
+                    /* ROM was loaded to the lower part of the buffer */
+                    memcpy(&(unit->rom[0x4000]), unit->rom,
+                        DRIVE_ROM2031_SIZE);
+                    break;
+                case DRIVE_TYPE_2040:
+                    driverom_load("DosName2040", unit->rom, &rom2040_loaded,
+                        DRIVE_ROM2040_SIZE, DRIVE_ROM2040_SIZE, "2040",
+                        DRIVE_TYPE_2040, NULL);
+                    /* ROM was loaded to the lower part of the buffer */
+                    memcpy(&(unit->rom[DRIVE_ROM_SIZE - DRIVE_ROM2040_SIZE]),
+                        unit->rom, DRIVE_ROM2040_SIZE);
+                    break;
+                case DRIVE_TYPE_3040:
+                    driverom_load("DosName3040", unit->rom, &rom3040_loaded,
+                        DRIVE_ROM3040_SIZE, DRIVE_ROM3040_SIZE, "3040",
+                        DRIVE_TYPE_3040, NULL);
+                    /* ROM was loaded to the lower part of the buffer */
+                    memcpy(&(unit->rom[DRIVE_ROM_SIZE - DRIVE_ROM3040_SIZE]),
+                        unit->rom, DRIVE_ROM3040_SIZE);
+                    break;
+                case DRIVE_TYPE_4040:
+                    driverom_load("DosName4040", unit->rom, &rom4040_loaded,
+                        DRIVE_ROM4040_SIZE, DRIVE_ROM4040_SIZE, "4040",
+                        DRIVE_TYPE_4040, NULL);
+                    /* ROM was loaded to the lower part of the buffer */
+                    memcpy(&(unit->rom[DRIVE_ROM_SIZE - DRIVE_ROM4040_SIZE]),
+                        unit->rom, DRIVE_ROM4040_SIZE);
+                    break;
+                case DRIVE_TYPE_1001:
+                case DRIVE_TYPE_8050:
+                case DRIVE_TYPE_8250:
+                    driverom_load("DosName1001", unit->rom, &rom1001_loaded,
+                        DRIVE_ROM1001_SIZE, DRIVE_ROM1001_SIZE, "1001/8050/8250",
+                        DRIVE_TYPE_1001, NULL);
+                    /* ROM was loaded to the lower part of the buffer */
+                    memcpy(&(unit->rom[0x4000]), unit->rom,
+                        DRIVE_ROM1001_SIZE);
+                    break;
+                case DRIVE_TYPE_9000:
+                    driverom_load("DosName9000", unit->rom, &rom9000_loaded,
+                        DRIVE_ROM9000_SIZE, DRIVE_ROM9000_SIZE, "D9090/9060",
+                        DRIVE_TYPE_9000, NULL);
+                    /* ROM was loaded to the lower part of the buffer */
+                    memcpy(&(unit->rom[0x4000]), unit->rom,
+                        DRIVE_ROM9000_SIZE);
+                    break;
+            }
+
+            /* if loading failed, set rom type to 0 */
+            if (!loaded) {
+                unit->rom_type = 0;
+            }
         }
     }
 }
 
+/* check if the drive ROM is available for a given drive type, returns -1 on error */
 int ieeerom_check_loaded(unsigned int type)
 {
     switch (type) {

Modified: trunk/vice/src/drive/tcbm/tcbm.c
===================================================================
--- trunk/vice/src/drive/tcbm/tcbm.c	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/tcbm/tcbm.c	2025-08-27 09:02:36 UTC (rev 45744)
@@ -82,16 +82,19 @@
     tpid_setup_context(drv);
 }
 
+/* test all ROMs for existence, size */
 void tcbm_drive_rom_load(void)
 {
     tcbmrom_load_1551();
 }
 
+/* setup (=load) the ROM for a given disk unit nr */
 void tcbm_drive_rom_setup_image(unsigned int dnr)
 {
     tcbmrom_setup_image(diskunit_context[dnr]);
 }
 
+/* check if the drive ROM is available for a given drive type, returns -1 on error */
 int tcbm_drive_rom_check_loaded(unsigned int type)
 {
     return tcbmrom_check_loaded(type);

Modified: trunk/vice/src/drive/tcbm/tcbmrom.c
===================================================================
--- trunk/vice/src/drive/tcbm/tcbmrom.c	2025-08-24 15:44:19 UTC (rev 45743)
+++ trunk/vice/src/drive/tcbm/tcbmrom.c	2025-08-27 09:02:36 UTC (rev 45744)
@@ -41,31 +41,44 @@
 /* Logging goes here.  */
 static log_t tcbmrom_log;
 
-static uint8_t drive_rom1551[DRIVE_ROM1551_SIZE];
-
-/* If nonzero, the ROM image has been loaded.  */
+/* If nonzero, the ROM image is available  */
 static unsigned int rom1551_loaded = 0;
 
-
+/* test ROM for existence, size */
 int tcbmrom_load_1551(void)
 {
-    return driverom_load("DosName1551", drive_rom1551, &rom1551_loaded,
+    return driverom_test_load("DosName1551", &rom1551_loaded,
             DRIVE_ROM1551_SIZE, DRIVE_ROM1551_SIZE, "1551",
             DRIVE_TYPE_1551, NULL);
 }
 
+/* setup (=load) the ROM for a given disk unit */
 void tcbmrom_setup_image(diskunit_context_t *unit)
 {
+    unsigned int loaded = 0;
     if (rom_loaded) {
-        switch (unit->type) {
-            case DRIVE_TYPE_1551:
-                memcpy(&(unit->rom[0x4000]), drive_rom1551,
-                       DRIVE_ROM1551_SIZE);
-                break;
+        if (unit->rom_type != unit->type) {
+            /* set this here to avoid recursion */
+            unit->rom_type = unit->type;
+
+            switch (unit->type) {
+                case DRIVE_TYPE_1551:
+                    driverom_load("DosName1551", unit->rom, &loaded,
+                            DRIVE_ROM1551_SIZE, DRIVE_ROM1551_SIZE, "1551",
+                            DRIVE_TYPE_1551, NULL);
+                    /* ROM was loaded to the lower part of the buffer */
+                    memcpy(&(unit->rom[DRIVE_ROM1551_SIZE]), unit->rom, DRIVE_ROM1551_SIZE);
+                    break;
+            }
+            /* if loading failed, set rom type to 0 */
+            if (!loaded) {
+                unit->rom_type = 0;
+            }
         }
     }
 }
 
+/* check if the drive ROM is available for a given drive type, returns -1 on error */
 int tcbmrom_check_loaded(unsigned int type)
 {
     switch (type) {

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.

Revision: 45743
          http://sourceforge.net/p/vice-emu/code/45743
Author:   gpz
Date:     2025-08-24 15:44:19 +0000 (Sun, 24 Aug 2025)
Log Message:
-----------
when setting dqbb size, only (re)enable cartridge when it was actually enabled

Modified Paths:
--------------
    trunk/vice/src/c64/cart/dqbb.c

Modified: trunk/vice/src/c64/cart/dqbb.c
===================================================================
--- trunk/vice/src/c64/cart/dqbb.c	2025-08-24 13:40:55 UTC (rev 45742)
+++ trunk/vice/src/c64/cart/dqbb.c	2025-08-24 15:44:19 UTC (rev 45743)
@@ -380,10 +380,13 @@
             (val == 64) ||
             (val == 128) ||
             (val == 256)) {
+            int was_enabled = dqbb_enabled;
             dqbb_deactivate();
             dqbb_size = val;
             dqbb_bank_mask = (val == 0) ? 0 : (val / 16) - 1;
-            dqbb_activate();
+            if (was_enabled) {
+                dqbb_activate();
+            }
             DBG(("set_dqbb_size size: %d mask: 0x%02x", dqbb_size, (unsigned int)dqbb_bank_mask));
         } else {
             return -1;

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.

Revision: 45742
          http://sourceforge.net/p/vice-emu/code/45742
Author:   gpz
Date:     2025-08-24 13:40:55 +0000 (Sun, 24 Aug 2025)
Log Message:
-----------
add tcbm test, related to #2160

Modified Paths:
--------------
    testprogs/testbench/plus4-testlist.in
    testprogs/testbench/xplus4-testlist.txt

Added Paths:
-----------
    testprogs/Plus4/tcbm/
    testprogs/Plus4/tcbm/Makefile
    testprogs/Plus4/tcbm/test.asm
    testprogs/Plus4/tcbm/test.prg

Added: testprogs/Plus4/tcbm/Makefile
===================================================================
--- testprogs/Plus4/tcbm/Makefile	                        (rev 0)
+++ testprogs/Plus4/tcbm/Makefile	2025-08-24 13:40:55 UTC (rev 45742)
@@ -0,0 +1,8 @@
+
+all: test.prg
+
+test.prg: test.asm
+	acme -f cbm -o test.prg test.asm
+
+clean:
+	$(RM) test.prg

Added: testprogs/Plus4/tcbm/test.asm
===================================================================
--- testprogs/Plus4/tcbm/test.asm	                        (rev 0)
+++ testprogs/Plus4/tcbm/test.asm	2025-08-24 13:40:55 UTC (rev 45742)
@@ -0,0 +1,60 @@
+
+; related to https://sourceforge.net/p/vice-emu/bugs/2160/
+
+BORDERCOLOR = $ff19
+SCREENCOLOR = $ff15
+DEBUGREG = $fdcf        ; http://plus4world.powweb.com/forum.php?postid=31417#31429
+
+TIA_DRIVE9 = $fec0
+TIA_DRIVE8 = $fee0
+
+    * = $1001
+
+    !byte $0C, $10, $E4, $07, $9E, $20, $34, $31, $31, $32, $00     ; 10 SYS 4112
+    !byte $00, $00
+
+    *= $1010
+
+    SEI
+    LDA #$FC
+    STA $FEF4       ; DDRB
+    LDA #$FC
+    STA $FEF1       ; PB
+    AND #$FC
+    CMP #$FC
+    BNE failure
+    LDA #$00
+    STA $FEF4       ; DDRB
+    LDA $FEF1       ; PB
+    AND #$FC
+    BNE failure
+    LDA #$3F
+    STA $FEF5       ; DDRC
+    LDA #$3F
+    STA $FEF2       ; PC
+    LDA $FEF2       ; PC
+    AND #$3F
+    CMP #$3F
+    BNE failure
+    LDA #$00
+    STA $FEF5       ; DDRC
+    LDA $FEF2       ; PC
+    AND #$3F
+    BNE failure
+
+    ; OK
+    LDA #(3 << 4) | 5 ; green
+    STA BORDERCOLOR
+    lda #$00
+    sta DEBUGREG
+
+    JMP $F445 ; exit to monitor
+
+failure:
+    ; ERROR
+    LDA #(3 << 4) | 2 ; red
+    STA BORDERCOLOR
+    lda #$ff
+    sta DEBUGREG
+
+    JMP $F445 ; exit to monitor

Added: testprogs/Plus4/tcbm/test.prg
===================================================================
(Binary files differ)

Index: testprogs/Plus4/tcbm/test.prg
===================================================================
--- testprogs/Plus4/tcbm/test.prg	2025-08-23 12:37:34 UTC (rev 45741)
+++ testprogs/Plus4/tcbm/test.prg	2025-08-24 13:40:55 UTC (rev 45742)

Property changes on: testprogs/Plus4/tcbm/test.prg
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/x-commodore-exec
\ No newline at end of property
Modified: testprogs/testbench/plus4-testlist.in
===================================================================
--- testprogs/testbench/plus4-testlist.in	2025-08-23 12:37:34 UTC (rev 45741)
+++ testprogs/testbench/plus4-testlist.in	2025-08-24 13:40:55 UTC (rev 45742)
@@ -15,6 +15,7 @@
 ################################################################################
 ../Plus4/openio/,outrun.prg,exitcode,10000000
 ../Plus4/openio/,outrun2.prg,exitcode,10000000
+../Plus4/tcbm/,test.prg,exitcode,10000000
 ################################################################################
 # Joystick/Mouse
 ################################################################################

Modified: testprogs/testbench/xplus4-testlist.txt
===================================================================
--- testprogs/testbench/xplus4-testlist.txt	2025-08-23 12:37:34 UTC (rev 45741)
+++ testprogs/testbench/xplus4-testlist.txt	2025-08-24 13:40:55 UTC (rev 45742)
@@ -16,6 +16,7 @@
 ################################################################################
 ../Plus4/openio/,outrun.prg,exitcode,10000000
 ../Plus4/openio/,outrun2.prg,exitcode,10000000
+../Plus4/tcbm/,test.prg,exitcode,10000000
 ################################################################################
 # Joystick/Mouse
 ################################################################################

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Revision: 45741
          http://sourceforge.net/p/vice-emu/code/45741
Author:   gpz
Date:     2025-08-23 12:37:34 +0000 (Sat, 23 Aug 2025)
Log Message:
-----------
fix DBG macro

Modified Paths:
--------------
    trunk/vice/src/arch/shared/console_unix.c
    trunk/vice/src/monitor/mon_util.c
    trunk/vice/src/monitor/monitor.c

Modified: trunk/vice/src/arch/shared/console_unix.c
===================================================================
--- trunk/vice/src/arch/shared/console_unix.c	2025-08-23 12:21:50 UTC (rev 45740)
+++ trunk/vice/src/arch/shared/console_unix.c	2025-08-23 12:37:34 UTC (rev 45741)
@@ -49,7 +49,7 @@
 /*#define DEBUG_CONSOLE*/
 
 #ifdef DEBUG_CONSOLE
-#define DBG(x)  log_printf
+#define DBG(x)  log_printf x
 #else
 #define DBG(x)
 #endif

Modified: trunk/vice/src/monitor/mon_util.c
===================================================================
--- trunk/vice/src/monitor/mon_util.c	2025-08-23 12:21:50 UTC (rev 45740)
+++ trunk/vice/src/monitor/mon_util.c	2025-08-23 12:37:34 UTC (rev 45741)
@@ -52,7 +52,7 @@
 /*#define DEBUG_MONUTIL*/
 
 #ifdef DEBUG_MONUTIL
-#define DBG(x)  log_printf
+#define DBG(x)  log_printf x
 #else
 #define DBG(x)
 #endif

Modified: trunk/vice/src/monitor/monitor.c
===================================================================
--- trunk/vice/src/monitor/monitor.c	2025-08-23 12:21:50 UTC (rev 45740)
+++ trunk/vice/src/monitor/monitor.c	2025-08-23 12:37:34 UTC (rev 45741)
@@ -96,7 +96,7 @@
 /*#define DEBUG_MONITOR*/
 
 #ifdef DEBUG_MONITOR
-#define DBG(x)  log_printf
+#define DBG(x)  log_printf x
 #else
 #define DBG(x)
 #endif

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Revision: 45740
          http://sourceforge.net/p/vice-emu/code/45740
Author:   rhialto
Date:     2025-08-23 12:21:50 +0000 (Sat, 23 Aug 2025)
Log Message:
-----------
Tabs to spaces...

Modified Paths:
--------------
    trunk/vice/src/pet/petmem.c

Modified: trunk/vice/src/pet/petmem.c
===================================================================
--- trunk/vice/src/pet/petmem.c	2025-08-23 12:13:41 UTC (rev 45739)
+++ trunk/vice/src/pet/petmem.c	2025-08-23 12:21:50 UTC (rev 45740)
@@ -641,8 +641,8 @@
     spet_ctrlwp = 1;
     spet_firq_disabled = 0;
     if (spet_flat_mode) {
-	spet_flat_mode = 0;
-	mem_initialize_memory_6809_banked();
+        spet_flat_mode = 0;
+        mem_initialize_memory_6809_banked();
     }
 
     petmem_map_reg = 0;

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Revision: 45739
          http://sourceforge.net/p/vice-emu/code/45739
Author:   rhialto
Date:     2025-08-23 12:13:41 +0000 (Sat, 23 Aug 2025)
Log Message:
-----------
Small SuperPET banking corrections.

- the SYNC instruction resets the whole banking register to 00
- track the bank number in spet_bank again since this is used for display to the user

Modified Paths:
--------------
    trunk/vice/src/pet/petmem.c

Modified: trunk/vice/src/pet/petmem.c
===================================================================
--- trunk/vice/src/pet/petmem.c	2025-08-22 18:03:48 UTC (rev 45738)
+++ trunk/vice/src/pet/petmem.c	2025-08-23 12:13:41 UTC (rev 45739)
@@ -65,6 +65,7 @@
 
 static uint8_t mem_read_patchbuf(uint16_t addr);
 static void mem_initialize_memory_6809_flat(void);
+static void mem_initialize_memory_6809_banked(void);
 
 uint8_t petmem_2001_buf_ef[256];
 
@@ -629,6 +630,7 @@
 
 void set_spet_bank(int banknr)
 {
+    spet_bank = banknr;
     spet_bank_ptr = &mem_ram[EXT_RAM + (banknr << 12)];
 }
 
@@ -637,8 +639,11 @@
     spet_ramen = 1;
     set_spet_bank(0);
     spet_ctrlwp = 1;
-    spet_flat_mode = 0;
     spet_firq_disabled = 0;
+    if (spet_flat_mode) {
+	spet_flat_mode = 0;
+	mem_initialize_memory_6809_banked();
+    }
 
     petmem_map_reg = 0;
     petmem_ramON = 0;
@@ -697,7 +702,7 @@
         spet_firq_disabled = (value & 0x20);
         spet_flat_mode = (value & 0x40);
         spet_ctrlwp = !(value & 0x80);
-        /* printf("spet_bank := %x  ", spet_bank);
+        /* printf("spet_bank := %2d  ", spet_bank);
            printf("spet_flat_mode := %d  ", !!spet_flat_mode);
            printf("spet_firq_disabled := %d  ", !!spet_firq_disabled);
            printf("spet_ctrlwp := %d\n", !!spet_ctrlwp); */
@@ -710,14 +715,14 @@
              */
             mem_initialize_memory_6809_flat();
             /* mon_bank(e_default_space, "extram");
-               extern WORD PC;
+               extern uint16_t PC;
                 printf("next opcode: %04X: banked %02X, flat %02X\n",
                        PC,
-                       mem_ram[EXT_RAM + spet_bank_4k + (PC & 0x0FFF)],
+                       spet_bank_ptr[PC & 0x0FFF],
                        mem_ram[EXT_RAM + PC]
                   ); */
         }
-        /* else if (spet_bank_4k != old_spet_bank_4k) {
+        /* else if (spet_bank != old_spet_bank) {
          *      maincpu_resync_limits(); notyet: 6809 doesn't use bank_base yet.
          * }
          */
@@ -1385,8 +1390,8 @@
                 if (value & FFF0_SCREEN_PEEK_THROUGH) {
                     /* screen memory mapped through */
                     for (; l < 0x90; l++) {
-                        _mem_read_tab[l] = ram_read;
-                        _mem_write_tab[l] = ram_store;
+                        _mem_read_tab[l] = read_vmem;
+                        _mem_write_tab[l] = store_vmem;
                         _mem_read_base_tab[l] = NULL;
                         mem_read_limit_tab[l] = 0;
                     }
@@ -1633,17 +1638,23 @@
 }
 
 /*
- * The memory mapping is probably reset even if FIRQ is disabled
- * (see http://mikenaberezny.com/wp-content/uploads/2009/11/superos9-mmu-schematic-r2.jpg )
- * but since a missing FIRQ basically halts the 6809, there is little
- * difference in practice.
+ * Reset the memory mapping to 00 if a FIRQ happens.
+ * See http://mikenaberezny.com/wp-content/uploads/2009/11/superos9-mmu-schematic-r2.jpg
+ * Note that it swaps the meaning of Q5 and Q6.
  */
 int superpet_sync(void)
 {
+    if (spet_firq_disabled) {
+        log_error(pet_mem_log, "SuperPET: SYNC encountered, but no FIRQ possible!");
+        return 1;
+    }
+    set_spet_bank(0);
+    spet_ctrlwp = 1;
     spet_flat_mode = 0;
+    spet_firq_disabled = 0;
     mem_initialize_memory_6809_banked();
     /* mon_bank(e_default_space, "6809");
-       extern WORD PC;
+       extern uint16_t PC;
        printf("next opcode: %04X: banked %02X, flat %02X\n",
                PC,
                mem_ram[EXT_RAM + spet_bank_4k + (PC & 0x0FFF)],
@@ -1650,12 +1661,7 @@
                mem_ram[EXT_RAM + PC]
           ); */
 
-    if (spet_firq_disabled) {
-        log_error(pet_mem_log, "SuperPET: SYNC encountered, but no FIRQ possible!");
-        return 1;
-    } else {
-        return 0;
-    }
+    return 0;
 }
 
 /* This does the plain 8032 configuration, as 8096 stuff only comes up when

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Revision: 45738
          http://sourceforge.net/p/vice-emu/code/45738
Author:   gpz
Date:     2025-08-22 18:03:48 +0000 (Fri, 22 Aug 2025)
Log Message:
-----------
init vte_console.console_cannot_output with 0 once the window was created, and set mon_console_suspend_on_leaving to 0 when leaving the monitor with 'g'. should fix #2158

Modified Paths:
--------------
    trunk/vice/src/arch/gtk3/uimon.c
    trunk/vice/src/arch/shared/console_unix.c
    trunk/vice/src/monitor/mon_util.c
    trunk/vice/src/monitor/monitor.c

Modified: trunk/vice/src/arch/gtk3/uimon.c
===================================================================
--- trunk/vice/src/arch/gtk3/uimon.c	2025-08-18 13:33:45 UTC (rev 45737)
+++ trunk/vice/src/arch/gtk3/uimon.c	2025-08-22 18:03:48 UTC (rev 45738)
@@ -81,6 +81,14 @@
 #include "widgethelpers.h"
 #include "uidata.h"
 
+/*#define DEBUG_UIMON*/
+
+#ifdef DEBUG_UIMON
+#define DBG(x)  log_printf
+#else
+#define DBG(x)
+#endif
+
 static gboolean uimon_window_open_impl(gpointer user_data);
 static gboolean uimon_window_resume_impl(gpointer user_data);
 
@@ -1376,6 +1384,7 @@
                                   NULL);
 
         vte_console.console_can_stay_open = 1;
+        vte_console.console_cannot_output = 0;
 
         uimon_set_font();
     } else {

Modified: trunk/vice/src/arch/shared/console_unix.c
===================================================================
--- trunk/vice/src/arch/shared/console_unix.c	2025-08-18 13:33:45 UTC (rev 45737)
+++ trunk/vice/src/arch/shared/console_unix.c	2025-08-22 18:03:48 UTC (rev 45738)
@@ -46,7 +46,14 @@
 
 #include "lib/linenoise-ng/linenoise.h"
 
+/*#define DEBUG_CONSOLE*/
 
+#ifdef DEBUG_CONSOLE
+#define DBG(x)  log_printf
+#else
+#define DBG(x)
+#endif
+
 typedef struct console_private_s {
     FILE *input;
     FILE *output;
@@ -98,6 +105,9 @@
     console->console_can_stay_open = 1;
     console->console_cannot_output = 0;
 
+    DBG(("native_console_open console:%p console_can_stay_open:%d console_cannot_output:%d",
+        console, console->console_can_stay_open, console->console_cannot_output));
+
     return console;
 
 exitnull:

Modified: trunk/vice/src/monitor/mon_util.c
===================================================================
--- trunk/vice/src/monitor/mon_util.c	2025-08-18 13:33:45 UTC (rev 45737)
+++ trunk/vice/src/monitor/mon_util.c	2025-08-22 18:03:48 UTC (rev 45738)
@@ -49,10 +49,18 @@
 #include "uimon.h"
 #include "vsyncapi.h"
 
+/*#define DEBUG_MONUTIL*/
+
+#ifdef DEBUG_MONUTIL
+#define DBG(x)  log_printf
+#else
+#define DBG(x)
+#endif
+
 static char *bigbuffer = NULL;
 static const unsigned int bigbuffersize = 10000;
 static unsigned int bigbufferwrite = 0;
-static unsigned int bigbuffermode = 0; /* 0: ascii, 1: petscii, 2: scrcode */
+static unsigned int bigbuffermode = 0; /* 0: ascii, 1: petscii, 2: scrcode, 3: petscii (uppercase), 4: scrcode (uppercase) */
 
 static FILE *mon_log_file = NULL;
 
@@ -188,6 +196,9 @@
     int rv = 0;
     int len;
 
+    DBG(("console_log:%p console_cannot_output:%d",
+         console_log, console_log ? console_log->console_cannot_output : -1));
+
     if (!console_log || console_log->console_cannot_output) {
 
         if (mode != bigbuffermode) {

Modified: trunk/vice/src/monitor/monitor.c
===================================================================
--- trunk/vice/src/monitor/monitor.c	2025-08-18 13:33:45 UTC (rev 45737)
+++ trunk/vice/src/monitor/monitor.c	2025-08-22 18:03:48 UTC (rev 45738)
@@ -93,6 +93,14 @@
 #include "video.h"
 #include "vsync.h"
 
+/*#define DEBUG_MONITOR*/
+
+#ifdef DEBUG_MONITOR
+#define DBG(x)  log_printf
+#else
+#define DBG(x)
+#endif
+
 /*
    INITBREAK switched to a break point so that the first instruction doesn't
    run when '-initbreak reset' is used.
@@ -161,6 +169,7 @@
  * different from what keep_monitor_open does :)
  */
 static int mon_console_suspend_on_leaving = 1;
+
 /* flag used by the eXit command. it will force the monitor to close regardless
  * of keep_monitor_open.
  */
@@ -989,6 +998,7 @@
 void mon_go(void)
 {
     exit_mon = 1;
+    mon_console_suspend_on_leaving = 0;
 
     if (should_pause_on_exit_mon || ui_pause_active()) {
         should_pause_on_exit_mon = false;
@@ -3043,7 +3053,8 @@
     mon_console_close_on_leaving = 0;
 
     if (console_mode) {
-        /* Shitty hack. We should support the console size etc. */
+        /* Shitty hack. We should support the console size etc.
+           NOTE: this is (only) for the case when VICE runs in console mode (-console) */
         static console_t console_log_console = { TTY_COLUMNS, TTY_ROWS, 0, 0, NULL };
         console_log = &console_log_console;
     } else if (monitor_is_remote() || monitor_is_binary()) {
@@ -3058,6 +3069,7 @@
             uimon_set_interface(mon_interfaces, NUM_MEMSPACES);
         }
     }
+    DBG(("monitor_open console_mode:%d console_log:%p", console_mode, console_log));
 
     if (console_log == NULL) {
         log_error(LOG_DEFAULT, "monitor_open: could not open monitor console.");
@@ -3235,7 +3247,7 @@
         last_cmd = cmd;
     }
 
-    uimon_notify_change(); /* @SRT */
+    uimon_notify_change();
 
     return exit_mon;
 }
@@ -3283,6 +3295,7 @@
         console_log = NULL;
     }
 
+    DBG(("monitor_close console_log:%p", console_log));
     vsync_suspend_speed_eval();
 }
 
@@ -3291,6 +3304,8 @@
     char prompt[40];
     char *p;
 
+    DBG(("monitor_startup console_log:%p", console_log));
+
     if (inside_monitor) {
         /*
          * Drive cpu interrupt can enter the monitor .. and then the monitor

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.

Revision: 45737
          http://sourceforge.net/p/vice-emu/code/45737
Author:   gpz
Date:     2025-08-18 13:33:45 +0000 (Mon, 18 Aug 2025)
Log Message:
-----------
add support for Protovisions 'Megabyter' cartridge

Modified Paths:
--------------
    trunk/vice/doc/vice.texi
    trunk/vice/src/Makefile.am
    trunk/vice/src/arch/gtk3/uisettings.c
    trunk/vice/src/arch/gtk3/widgets/Makefile.am
    trunk/vice/src/arch/sdl/menu_c64cart.c
    trunk/vice/src/c64/cart/Makefile.am
    trunk/vice/src/c64/cart/c64cart.c
    trunk/vice/src/c64/cart/c64carthooks.c
    trunk/vice/src/c64/cart/c64cartmem.c
    trunk/vice/src/cartridge.h
    trunk/vice/src/core/Makefile.am
    trunk/vice/src/tools/cartconv/c64-cartridges.c
    trunk/vice/src/tools/cartconv/cartconv.c

Added Paths:
-----------
    trunk/vice/src/arch/gtk3/widgets/settings_megabyter.c
    trunk/vice/src/arch/gtk3/widgets/settings_megabyter.h
    trunk/vice/src/c64/cart/megabyter.c
    trunk/vice/src/c64/cart/megabyter.h
    trunk/vice/src/core/flash800core.c
    trunk/vice/src/flash800.h

Modified: trunk/vice/doc/vice.texi
===================================================================
--- trunk/vice/doc/vice.texi	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/doc/vice.texi	2025-08-18 13:33:45 UTC (rev 45737)
@@ -10207,6 +10207,8 @@
 84: Profi-DOS
 @item
 85: Magic Desk 16
+@item
+86: Protovision "Megabyter"
 @end itemize
 
 @vindex CartridgeFile
@@ -10463,6 +10465,15 @@
 @item MagicVoiceImage
 String specifying the filename of the Magic Voice ROM image.
 
+@vindex MegabyterWriteCRT
+@item MegabyterWriteCRT
+Boolean, if true write back the Megabyter image file automatically, incase the
+contents changed, when detaching or quitting the emulator.
+
+@vindex MegabyterOptimizeCRT
+@item MegabyterOptimizeCRT
+Boolean, if true omit empty (filled with $ff) banks from the .crt image when writing.
+
 @vindex MMC64
 @item MMC64
 Boolean specifying whether the MMC64 should be emulated or not.
@@ -11174,6 +11185,10 @@
 @item -cartmach5 <name>
 Attach raw 8KiB MACH 5 cartridge image.
 
+@findex -cartmb
+@item -cartmb <name>
+Attach raw Megabyter cartridge image.
+
 @findex -cartmd
 @item -cartmd <name>
 Attach raw 32/64/128KiB Magic Desk cartridge image.
@@ -11198,6 +11213,18 @@
 @item -cartmikro <name>
 Attach raw 8KiB Mikro Assembler cartridge image.
 
+@findex -megabytercrtwrite, +megabytercrtwrite
+@item -megabytercrtwrite
+@itemx +megabytercrtwrite
+Allow/Disallow writing to Megabyter .crt image
+(@code{MegabyterWriteCRT=1}, @code{MegabyterWriteCRT=0}).
+
+@findex -megabytercrtoptimize, +megabytercrtoptimize
+@item -megabytercrtoptimize
+@itemx +megabytercrtoptimize
+Allow/Disallow Megabyter .crt image optimizing (omitting of empty banks) on write
+(@code{MegabyterOptimizeCRT=1}, @code{MegabyterOptimizeCRT=0}).
+
 @findex -mmc64, +mmc64
 @item -mmc64
 @itemx +mmc64
@@ -23825,6 +23852,8 @@
 Magic Formel .crt file
 @item max
 MAX Basic .crt file
+@item mb
+Megabyter .crt file
 @item mikro
 Mikro Assembler .crt file
 @item mmc64
@@ -35006,7 +35035,7 @@
 @item EXROM
 @tab active (lo) (0)
 @item GAME
-@tab active (hi) (0)
+@tab active (lo) (0)
 @item Startup mode
 @tab 16KiB Game
 @item Load address
@@ -35038,7 +35067,39 @@
 
 used by "SNK vs CAPCOM - Stronger Edition"
 
+
 @c @node FIXME
+@subsubsection 86 - Protovision "Megabyter"
+
+@multitable @columnfractions .3 .7
+@item Size
+@tab 1024KiB (128 banks of 8KiB each)
+@item EXROM
+@tab active (lo) (0)
+@item GAME
+@tab inactive (hi) (1)
+@item Startup mode
+@tab 8KiB Game
+@item Load address
+@tab (banks 0-127) - $8000-9FFF
+@end multitable
+
+@example
+        00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F       ASCII
+        -----------------------------------------------  ----------------
+000000: 43 36 34 20 43 41 52 54 52 49 44 47 45 20 20 20  C64 CARTRIDGE
+000010: 00 00 00 40 01 00 00 56 00 01 00 00 00 00 00 00  ...@...V........
+000020: 50 54 56 20 4d 65 67 61 62 79 74 65 72 00 00 00  PTV Megabyter...
+000030: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
+000040: 43 48 49 50 00 00 20 10 00 02 00 00 80 00 20 00  CHIP.. ....... .
+000050: 09 80 00 00 c3 c2 cd 38 30 78 20 d3 82 a9 00 8d  .......80x .....
+...
+100820: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
+100830: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff  ................
+@end example
+
+
+@c @node FIXME
 @subsection C128 Cartridge Specifics
 
 Note: Cartridges that work on both C64 and C128 get "C64 Cartridge" type and get a

Modified: trunk/vice/src/Makefile.am
===================================================================
--- trunk/vice/src/Makefile.am	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/src/Makefile.am	2025-08-18 13:33:45 UTC (rev 45737)
@@ -192,6 +192,7 @@
 	fixpoint.h \
 	fsdevice.h \
 	flash040.h \
+	flash800.h \
 	fliplist.h \
 	fullscreen.h \
 	gcr.h \

Modified: trunk/vice/src/arch/gtk3/uisettings.c
===================================================================
--- trunk/vice/src/arch/gtk3/uisettings.c	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/src/arch/gtk3/uisettings.c	2025-08-18 13:33:45 UTC (rev 45737)
@@ -115,6 +115,7 @@
 #endif
 #include "settings_misc.h"
 #include "settings_minimon.h"
+#include "settings_megabyter.h"
 #include "settings_megacart.h"
 #include "settings_mmc64.h"
 #include "settings_mmcr.h"
@@ -319,6 +320,9 @@
     { CARTRIDGE_NAME_GMOD3,
       "gmod3",
       settings_gmod3_widget_create, NULL },
+    { CARTRIDGE_NAME_MEGABYTER,
+      "megabyter",
+      settings_megabyter_widget_create, NULL },
 
     UI_SETTINGS_SEPARATOR,
 
@@ -458,6 +462,9 @@
     { CARTRIDGE_NAME_GMOD3,
       "gmod3",
       settings_gmod3_widget_create, NULL },
+    { CARTRIDGE_NAME_MEGABYTER,
+      "megabyter",
+      settings_megabyter_widget_create, NULL },
 
     UI_SETTINGS_SEPARATOR,
 
@@ -587,6 +594,9 @@
     { CARTRIDGE_NAME_GMOD3,
       "gmod3",
       settings_gmod3_widget_create, NULL },
+    { CARTRIDGE_NAME_MEGABYTER,
+      "megabyter",
+      settings_megabyter_widget_create, NULL },
 
     UI_SETTINGS_SEPARATOR,
 

Modified: trunk/vice/src/arch/gtk3/widgets/Makefile.am
===================================================================
--- trunk/vice/src/arch/gtk3/widgets/Makefile.am	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/src/arch/gtk3/widgets/Makefile.am	2025-08-18 13:33:45 UTC (rev 45737)
@@ -144,6 +144,7 @@
 	settings_keyboard.c \
 	settings_ltkernal.c \
 	settings_magicvoice.c \
+	settings_megabyter.c \
 	settings_megacart.c \
 	settings_midi.c \
 	settings_misc.c \
@@ -316,6 +317,7 @@
 	settings_keyboard.h \
 	settings_ltkernal.h \
 	settings_magicvoice.h \
+	settings_megabyter.h \
 	settings_megacart.h \
 	settings_midi.h \
 	settings_misc.h \

Added: trunk/vice/src/arch/gtk3/widgets/settings_megabyter.c
===================================================================
--- trunk/vice/src/arch/gtk3/widgets/settings_megabyter.c	                        (rev 0)
+++ trunk/vice/src/arch/gtk3/widgets/settings_megabyter.c	2025-08-18 13:33:45 UTC (rev 45737)
@@ -0,0 +1,88 @@
+/** \file   settings_megabyter.c
+ * \brief   Settings widget to control Megabyter resources
+ *
+ * \author  Bas Wassink <b.w...@zi...>
+ */
+
+/*
+ * $VICERES MegabyterWriteCRT       x64 x64sc xscpu64 x128
+ * $VICERES MegabyterOptimizeCRT    x64 x64sc xscpu64 x128
+ */
+
+/*
+ * This file is part of VICE, the Versatile Commodore Emulator.
+ * See README for copyright notice.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307  USA.
+ *
+ */
+
+#include "vice.h"
+#include <gtk/gtk.h>
+
+#include "cartridge.h"
+#include "vice_gtk3.h"
+
+#include "settings_megabyter.h"
+
+
+/** \brief  Create widget for EasyFlash primary image
+ *
+ * \return  GtkGrid
+ */
+static GtkWidget *create_primary_image_widget(void)
+{
+    GtkWidget *image;
+
+    image = cart_image_widget_new(CARTRIDGE_MEGABYTER,
+                                  CARTRIDGE_NAME_MEGABYTER,
+                                  CART_IMAGE_PRIMARY,
+                                  "cartridge",
+                                  NULL,
+                                  TRUE,
+                                  TRUE);
+    cart_image_widget_append_check(image,
+                                   "MegabyterWriteCRT",
+                                   "Save image when changed");
+    cart_image_widget_append_check(image,
+                                   "MegabyterOptimizeCRT",
+                                   "Optimize image when saving");
+    return image;
+}
+
+
+/** \brief  Create EasyFlash widget
+ *
+ * \param[in]   parent  parent widget (unused)
+ *
+ * \return  GtkGrid
+ */
+GtkWidget *settings_megabyter_widget_create(GtkWidget *parent)
+{
+    GtkWidget *grid;
+    GtkWidget *primary;
+
+    grid = gtk_grid_new();
+    gtk_grid_set_column_spacing(GTK_GRID(grid), 16);
+    gtk_grid_set_column_homogeneous(GTK_GRID(grid), FALSE);
+    gtk_grid_set_row_spacing(GTK_GRID(grid), 16);
+
+    primary = create_primary_image_widget();
+    gtk_grid_attach(GTK_GRID(grid), primary, 0, 0, 2, 1);
+
+    gtk_widget_show_all(grid);
+    return grid;
+}

Added: trunk/vice/src/arch/gtk3/widgets/settings_megabyter.h
===================================================================
--- trunk/vice/src/arch/gtk3/widgets/settings_megabyter.h	                        (rev 0)
+++ trunk/vice/src/arch/gtk3/widgets/settings_megabyter.h	2025-08-18 13:33:45 UTC (rev 45737)
@@ -0,0 +1,35 @@
+/** \file   settings_megabyter.h
+ * \brief   Settings widget to control Megabyter resources - header
+ *
+ * \author  Bas Wassink <b.w...@zi...>
+ */
+
+/*
+ * This file is part of VICE, the Versatile Commodore Emulator.
+ * See README for copyright notice.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307  USA.
+ *
+ */
+
+#ifndef VICE_SETTINGS_MEGABYTER_H
+#define VICE_SETTINGS_MEGABYTER_H
+
+#include <gtk/gtk.h>
+
+GtkWidget *settings_megabyter_widget_create(GtkWidget *parent);
+
+#endif

Modified: trunk/vice/src/arch/sdl/menu_c64cart.c
===================================================================
--- trunk/vice/src/arch/sdl/menu_c64cart.c	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/src/arch/sdl/menu_c64cart.c	2025-08-18 13:33:45 UTC (rev 45737)
@@ -170,6 +170,7 @@
     { CARTRIDGE_ISEPIC,         "IsepicCartridgeEnabled",   "Isepicfilename" },
     { CARTRIDGE_EASYFLASH,      NULL,                       NULL },
     { CARTRIDGE_GEORAM,         "GEORAM",                   "GEORAMfilename" },
+    { CARTRIDGE_MEGABYTER,      NULL,                       NULL, },
     { CARTRIDGE_MMC64,          "MMC64",                    "MMC64BIOSfilename" },
     { CARTRIDGE_MMC_REPLAY,     NULL,                       NULL },
     { CARTRIDGE_GMOD2,          NULL,                       NULL },
@@ -790,6 +791,37 @@
 };
 
 
+/* Megabyter */
+
+UI_MENU_DEFINE_TOGGLE(MegabyterWriteCRT)
+UI_MENU_DEFINE_TOGGLE(MegabyterOptimizeCRT)
+
+#define MEGABYTER_OFFSET_FLUSH 2
+#define MEGABYTER_OFFSET_SAVE 3
+
+static ui_menu_entry_t megabyter_cart_menu[] = {
+    {   .string   = "Save image on detach",
+        .type     = MENU_ENTRY_RESOURCE_TOGGLE,
+        .callback = toggle_MegabyterWriteCRT_callback
+    },
+    {   .string   = "Optimize image on write",
+        .type     = MENU_ENTRY_RESOURCE_TOGGLE,
+        .callback = toggle_MegabyterOptimizeCRT_callback
+    },
+    {   .string   = "Save image now", /* 2 */
+        .type     = MENU_ENTRY_OTHER,
+        .callback = c64_cart_flush_callback,
+        .data     = (ui_callback_data_t)CARTRIDGE_MEGABYTER
+    },
+    {   .string   = "Save image as", /* 3 */
+        .type     = MENU_ENTRY_OTHER,
+        .callback = c64_cart_save_callback,
+        .data     = (ui_callback_data_t)CARTRIDGE_MEGABYTER
+    },
+    SDL_MENU_LIST_END
+};
+
+
 /* MMC64 */
 
 UI_MENU_DEFINE_RADIO(MMC64ClockPort)
@@ -1696,6 +1728,7 @@
     { isepic_cart_menu,         ISEPIC_OFFSET_FLUSH,        CARTRIDGE_ISEPIC },
     { easyflash_cart_menu,      EASYFLASH_OFFSET_FLUSH,     CARTRIDGE_EASYFLASH },
     { georam_menu,              GEORAM_OFFSET_FLUSH,        CARTRIDGE_GEORAM },
+    { megabyter_cart_menu,      MEGABYTER_OFFSET_FLUSH,     CARTRIDGE_MEGABYTER },
     { mmc64_cart_menu,          MMC64_OFFSET_FLUSH,         CARTRIDGE_MMC64 },
     { mmcreplay_cart_menu,      MMCR_OFFSET_FLUSH,          CARTRIDGE_MMC_REPLAY },
     { retroreplay_cart_menu,    RETROREPLAY_OFFSET_FLUSH,   CARTRIDGE_RETRO_REPLAY },
@@ -1724,6 +1757,7 @@
     { isepic_cart_menu,         ISEPIC_OFFSET_SAVE,         CARTRIDGE_ISEPIC },
     { easyflash_cart_menu,      EASYFLASH_OFFSET_SAVE,      CARTRIDGE_EASYFLASH },
     { georam_menu,              GEORAM_OFFSET_SAVE,         CARTRIDGE_GEORAM },
+    { megabyter_cart_menu,      MEGABYTER_OFFSET_SAVE,      CARTRIDGE_MEGABYTER },
     { mmc64_cart_menu,          MMC64_OFFSET_SAVE,          CARTRIDGE_MMC64 },
     { mmcreplay_cart_menu,      MMCR_OFFSET_SAVE,           CARTRIDGE_MMC_REPLAY },
     { retroreplay_cart_menu,    RETROREPLAY_OFFSET_SAVE,    CARTRIDGE_RETRO_REPLAY },

Modified: trunk/vice/src/c64/cart/Makefile.am
===================================================================
--- trunk/vice/src/c64/cart/Makefile.am	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/src/c64/cart/Makefile.am	2025-08-18 13:33:45 UTC (rev 45737)
@@ -150,6 +150,8 @@
 	magicvoice.h \
 	maxbasic.c \
 	maxbasic.h \
+	megabyter.c \
+	megabyter.h \
 	mikroass.c \
 	mikroass.h \
 	mmcreplay.c \

Modified: trunk/vice/src/c64/cart/c64cart.c
===================================================================
--- trunk/vice/src/c64/cart/c64cart.c	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/src/c64/cart/c64cart.c	2025-08-18 13:33:45 UTC (rev 45737)
@@ -108,6 +108,7 @@
 #include "magicformel.h"
 #include "magicvoice.h"
 #include "maxbasic.h"
+#include "megabyter.h"
 #include "mikroass.h"
 #include "mmc64.h"
 #include "mmcreplay.h"
@@ -294,6 +295,7 @@
     { CARTRIDGE_NAME_MAGIC_FORMEL,        CARTRIDGE_MAGIC_FORMEL,        CARTRIDGE_GROUP_FREEZER },
     { CARTRIDGE_NAME_MAGIC_VOICE,         CARTRIDGE_MAGIC_VOICE,         CARTRIDGE_GROUP_UTIL },
     { CARTRIDGE_NAME_MAX_BASIC,           CARTRIDGE_MAX_BASIC,           CARTRIDGE_GROUP_UTIL },
+    { CARTRIDGE_NAME_MEGABYTER,           CARTRIDGE_MEGABYTER,           CARTRIDGE_GROUP_GAME },
     { CARTRIDGE_NAME_MIKRO_ASSEMBLER,     CARTRIDGE_MIKRO_ASSEMBLER,     CARTRIDGE_GROUP_UTIL },
     { CARTRIDGE_NAME_MMC64,               CARTRIDGE_MMC64,               CARTRIDGE_GROUP_UTIL },
     { CARTRIDGE_NAME_MMC_REPLAY,          CARTRIDGE_MMC_REPLAY,          CARTRIDGE_GROUP_FREEZER },
@@ -924,6 +926,9 @@
             case CARTRIDGE_MAX_BASIC:
                 rc = maxbasic_crt_attach(fd, rawcart);
                 break;
+            case CARTRIDGE_MEGABYTER:
+                rc = megabyter_crt_attach(fd, rawcart, filename);
+                break;
             case CARTRIDGE_MIKRO_ASSEMBLER:
                 rc = mikroass_crt_attach(fd, rawcart);
                 break;

Modified: trunk/vice/src/c64/cart/c64carthooks.c
===================================================================
--- trunk/vice/src/c64/cart/c64carthooks.c	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/src/c64/cart/c64carthooks.c	2025-08-18 13:33:45 UTC (rev 45737)
@@ -117,6 +117,7 @@
 #include "magicformel.h"
 #include "magicvoice.h"
 #include "maxbasic.h"
+#include "megabyter.h"
 #include "mikroass.h"
 #include "mmc64.h"
 #include "mmcreplay.h"
@@ -373,6 +374,9 @@
     { "-cartmd16", CALL_FUNCTION, CMDLINE_ATTRIB_NEED_ARGS,
       cart_attach_cmdline, (void *)CARTRIDGE_MAGIC_DESK_16, NULL, NULL,
       "<Name>", "Attach raw up to 2048KiB Magic Desk 16K cartridge image" },
+    { "-cartmb", CALL_FUNCTION, CMDLINE_ATTRIB_NEED_ARGS,
+      cart_attach_cmdline, (void *)CARTRIDGE_MEGABYTER, NULL, NULL,
+      "<Name>", "Attach raw 1024KiB " CARTRIDGE_NAME_MEGABYTER " cartridge image" },
     { "-cartmf", CALL_FUNCTION, CMDLINE_ATTRIB_NEED_ARGS,
       cart_attach_cmdline, (void *)CARTRIDGE_MAGIC_FORMEL, NULL, NULL,
       "<Name>", "Attach raw Magic Formel cartridge image" },
@@ -534,6 +538,7 @@
         || ide64_cmdline_options_init() < 0
         || ieeeflash64_cmdline_options_init() < 0
         || ltkernal_cmdline_options_init() < 0
+        || megabyter_cmdline_options_init() < 0
         || mmcreplay_cmdline_options_init() < 0
         || retroreplay_cmdline_options_init() < 0
         || rexramfloppy_cmdline_options_init() < 0
@@ -600,6 +605,7 @@
         || gmod3_resources_init() < 0
         || ide64_resources_init() < 0
         || ltkernal_resources_init() < 0
+        || megabyter_resources_init() < 0
         || mmcreplay_resources_init() < 0
         || retroreplay_resources_init() < 0
         || rexramfloppy_resources_init() < 0
@@ -651,6 +657,7 @@
     gmod3_resources_shutdown();
     ide64_resources_shutdown();
     ltkernal_resources_shutdown();
+    megabyter_resources_shutdown();
     mmcreplay_resources_shutdown();
     retroreplay_resources_shutdown();
     rexramfloppy_resources_shutdown();
@@ -1024,6 +1031,8 @@
             return magicformel_bin_attach(filename, rawcart);
         case CARTRIDGE_MAX_BASIC:
             return maxbasic_bin_attach(filename, rawcart);
+        case CARTRIDGE_MEGABYTER:
+            return megabyter_bin_attach(filename, rawcart);
         case CARTRIDGE_MIKRO_ASSEMBLER:
             return mikroass_bin_attach(filename, rawcart);
         case CARTRIDGE_MMC_REPLAY:
@@ -1294,6 +1303,9 @@
         case CARTRIDGE_MAX_BASIC:
             maxbasic_config_setup(rawcart);
             break;
+        case CARTRIDGE_MEGABYTER:
+            megabyter_config_setup(rawcart);
+            break;
         case CARTRIDGE_MIKRO_ASSEMBLER:
             mikroass_config_setup(rawcart);
             break;
@@ -1909,6 +1921,9 @@
         case CARTRIDGE_MAX_BASIC:
             maxbasic_detach();
             break;
+        case CARTRIDGE_MEGABYTER:
+            megabyter_detach();
+            break;
         case CARTRIDGE_MIKRO_ASSEMBLER:
             mikroass_detach();
             break;
@@ -2220,6 +2235,9 @@
             case CARTRIDGE_MAX_BASIC:
                 maxbasic_config_init();
                 break;
+            case CARTRIDGE_MEGABYTER:
+                megabyter_config_init();
+                break;
             case CARTRIDGE_MIKRO_ASSEMBLER:
                 mikroass_config_init();
                 break;
@@ -2922,6 +2940,8 @@
             return gmod2_flush_image();
         case CARTRIDGE_GMOD3:
             return gmod3_flush_image();
+        case CARTRIDGE_MEGABYTER:
+            return megabyter_flush_image();
         case CARTRIDGE_MMC_REPLAY:
             return mmcreplay_flush_image();
         case CARTRIDGE_RETRO_REPLAY:
@@ -3000,6 +3020,8 @@
             return gmod2_bin_save(filename);
         case CARTRIDGE_GMOD3:
             return gmod3_bin_save(filename);
+        case CARTRIDGE_MEGABYTER:
+            return megabyter_bin_save(filename);
         case CARTRIDGE_MMC_REPLAY:
             return mmcreplay_bin_save(filename);
         case CARTRIDGE_RETRO_REPLAY:
@@ -3071,6 +3093,8 @@
             return gmod2_crt_save(filename);
         case CARTRIDGE_GMOD3:
             return gmod3_crt_save(filename);
+        case CARTRIDGE_MEGABYTER:
+            return megabyter_crt_save(filename);
         case CARTRIDGE_MMC_REPLAY:
             return mmcreplay_crt_save(filename);
         case CARTRIDGE_RETRO_REPLAY:
@@ -3221,6 +3245,9 @@
         case CARTRIDGE_LT_KERNAL:
             ltkernal_mmu_translate(addr, base, start, limit);
             return;
+        case CARTRIDGE_MEGABYTER:
+            megabyter_mmu_translate(addr, base, start, limit);
+            return;
         case CARTRIDGE_RETRO_REPLAY:
             retroreplay_mmu_translate(addr, base, start, limit);
             return;
@@ -3638,6 +3665,11 @@
                         return -1;
                     }
                     break;
+                case CARTRIDGE_MEGABYTER:
+                    if (megabyter_snapshot_write_module(s) < 0) {
+                        return -1;
+                    }
+                    break;
                 case CARTRIDGE_MIKRO_ASSEMBLER:
                     if (mikroass_snapshot_write_module(s) < 0) {
                         return -1;
@@ -4258,6 +4290,11 @@
                         goto fail2;
                     }
                     break;
+                case CARTRIDGE_MEGABYTER:
+                    if (megabyter_snapshot_read_module(s) < 0) {
+                        goto fail2;
+                    }
+                    break;
                 case CARTRIDGE_MIKRO_ASSEMBLER:
                     if (mikroass_snapshot_read_module(s) < 0) {
                         goto fail2;

Modified: trunk/vice/src/c64/cart/c64cartmem.c
===================================================================
--- trunk/vice/src/c64/cart/c64cartmem.c	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/src/c64/cart/c64cartmem.c	2025-08-18 13:33:45 UTC (rev 45737)
@@ -98,6 +98,7 @@
 #include "magicformel.h"
 #include "magicvoice.h"
 #include "maxbasic.h"
+#include "megabyter.h"
 #include "mikroass.h"
 #include "mmc64.h"
 #include "mmcreplay.h"
@@ -656,6 +657,8 @@
             return ltkernal_roml_read(addr);
         case CARTRIDGE_MAX_BASIC:
             return maxbasic_roml_read(addr);
+        case CARTRIDGE_MEGABYTER:
+            return megabyter_roml_read(addr);
         case CARTRIDGE_MMC_REPLAY:
             return mmcreplay_roml_read(addr);
         case CARTRIDGE_MULTIMAX:
@@ -830,6 +833,9 @@
         case CARTRIDGE_LT_KERNAL:
             ltkernal_roml_store(addr, value);
             return;
+        case CARTRIDGE_MEGABYTER:
+            megabyter_roml_store(addr, value);
+            return;
         case CARTRIDGE_MMC_REPLAY:
             mmcreplay_roml_store(addr, value);
             return;

Added: trunk/vice/src/c64/cart/megabyter.c
===================================================================
--- trunk/vice/src/c64/cart/megabyter.c	                        (rev 0)
+++ trunk/vice/src/c64/cart/megabyter.c	2025-08-18 13:33:45 UTC (rev 45737)
@@ -0,0 +1,545 @@
+
+/*
+ * megabyter.c - Cartridge handling of the megabyter cart.
+ *
+ * Written by
+ *  Chester Kollschen <ma...@ch...>
+ *  groepaz <gr...@gm...>
+ *
+ * This file is part of VICE, the Versatile Commodore Emulator.
+ * See README for copyright notice.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307  USA.
+ *
+ */
+
+#include "vice.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "archdep.h"
+#define CARTRIDGE_INCLUDE_SLOTMAIN_API
+#include "c64cartsystem.h"
+#undef CARTRIDGE_INCLUDE_SLOTMAIN_API
+#include "c64mem.h"
+#include "cartio.h"
+#include "cartridge.h"
+#include "cmdline.h"
+#include "crt.h"
+#include "megabyter.h"
+#include "export.h"
+#include "flash800.h"
+#include "lib.h"
+#include "log.h"
+#include "maincpu.h"
+#include "mem.h"
+#include "monitor.h"
+#include "resources.h"
+#include "snapshot.h"
+#include "util.h"
+#include "sysfile.h"
+
+/*
+    Protovision "Megabyter"
+
+    - 1MiB Flash ROM (29F800CB)
+
+    ROM is always banked to ROML, ie $8000
+
+    - two write-only Registers in IO1
+
+    $de00 - selects ROM bank
+        bit 7       unused
+        bit 0-6     bank 0-127
+
+    $de02
+        bit 7       LED status (1: enabled)
+        bit 2-6     unused
+        bit 1       EXROM (0: low, 1: high)
+        bit 0       GAME  (0: high, 1: low)
+*/
+
+/* #define DEBUG_MEGABYTER */
+
+#ifdef DEBUG_MEGABYTER
+#define DBG(x)  log_printf x
+#else
+#define DBG(x)
+#endif
+
+#define MEGABYTER_BANK_BITS     7
+#define MEGABYTER_NUM_BANKS     (1 << (MEGABYTER_BANK_BITS))
+#define MEGABYTER_BANK_MASK     ((MEGABYTER_NUM_BANKS) -1)
+#define MEGABYTER_BANK_SIZE     0x2000
+#define MEGABYTER_ROM_SIZE      (MEGABYTER_NUM_BANKS * MEGABYTER_BANK_SIZE)
+
+/* the 29F800CB statemachine */
+static flash800_context_t *megabyter_state = NULL;
+
+/* writing back to crt enabled */
+static int megabyter_crt_write;
+
+/* optimizing crt enabled */
+static int megabyter_crt_optimize;
+
+/* backup of the registers */
+static uint8_t megabyter_register_00, megabyter_register_02;
+
+/* decoding table of the modes */
+static const uint8_t megabyter_memconfig[4] = {
+    CMODE_8KGAME,   /* exrom=0, game=1 */
+    CMODE_16KGAME,  /* exrom=0, game=0 */
+    CMODE_RAM,      /* exrom=1, game=1 */
+    CMODE_ULTIMAX   /* exrom=1, game=0 */
+};
+
+/* filename when attached */
+static char *megabyter_filename = NULL;
+static int megabyter_filetype = 0;
+
+/* ---------------------------------------------------------------------*/
+static io_source_list_t *megabyter_io1_list_item = NULL;
+
+static void megabyter_io1_store(uint16_t addr, uint8_t value);
+static uint8_t megabyter_io1_peek(uint16_t addr);
+static int megabyter_io1_dump(void);
+
+static io_source_t megabyter_io1_device = {
+    CARTRIDGE_NAME_MEGABYTER,          /* name of the device */
+    IO_DETACH_CART,                    /* use cartridge ID to detach the device when involved in a read-collision */
+    IO_DETACH_NO_RESOURCE,             /* does not use a resource for detach */
+    0xde00, 0xdeff, 0xff,              /* range for the device */
+    0,                                 /* read is never valid, device is write only */
+    megabyter_io1_store,               /* store function */
+    NULL,                              /* NO poke function */
+    NULL,                              /* NO read function */
+    megabyter_io1_peek,                /* peek function */
+    megabyter_io1_dump,                /* device state information dump function */
+    CARTRIDGE_MEGABYTER,               /* cartridge ID */
+    0,                                 /* normal priority, device read needs to be checked for collisions */
+    0,                                 /* insertion order, gets filled in by the registration function */
+    IO_MIRROR_NONE                     /* NO mirroring */
+};
+
+static const export_resource_t export_res = {
+    CARTRIDGE_NAME_MEGABYTER, 1, 1, &megabyter_io1_device, NULL, CARTRIDGE_MEGABYTER
+};
+
+static void megabyter_io1_store(uint16_t addr, uint8_t value)
+{
+    uint8_t mem_mode;
+
+    /* only A1 is decoded */
+    if (addr & 2) {
+        /* mode register */
+        megabyter_register_02 = value & 0x83; /* we only remember led, mode, exrom, game */
+        mem_mode = megabyter_memconfig[megabyter_register_02 & 0x03];
+        cart_config_changed_slotmain(mem_mode, mem_mode, CMODE_READ);
+        /* TODO: change led */
+        /* (value & 0x80) -> led on if true, led off if false */
+    } else {
+        /* bank register */
+        megabyter_register_00 = (uint8_t)(value & MEGABYTER_BANK_MASK);
+    }
+
+    DBG(("Megabyter: addr:0x%04x, value:%02x (bank:%02x mode:%i LED:%i)",
+         addr | 0xde00u, value, megabyter_register_00,
+         megabyter_memconfig[megabyter_register_02 & 0x03],
+         megabyter_register_02 >> 7));
+
+    cart_romlbank_set_slotmain(megabyter_register_00);
+    cart_port_config_changed_slotmain();
+}
+
+/* ---------------------------------------------------------------------*/
+
+static uint8_t megabyter_io1_peek(uint16_t addr)
+{
+    return (addr & 2) ? megabyter_register_02 : megabyter_register_00;
+}
+
+static int megabyter_io1_dump(void)
+{
+    int config = megabyter_memconfig[megabyter_register_02 & 0x03];
+    mon_out("Mode: %i (%s), LED is %s\n",
+            config, cart_config_string(config),
+            (megabyter_register_02 & 0x80) ? "on" : "off");
+    return 0;
+}
+
+
+/* ---------------------------------------------------------------------*/
+
+static int set_megabyter_crt_write(int val, void *param)
+{
+    megabyter_crt_write = val ? 1 : 0;
+    return 0;
+}
+
+static int set_megabyter_crt_optimize(int val, void *param)
+{
+    megabyter_crt_optimize = val ? 1 : 0;
+    return 0;
+}
+
+static int megabyter_write_chip_if_not_empty(FILE* fd, crt_chip_header_t *chip, uint8_t *data)
+{
+    int i;
+
+    for (i = 0; i < chip->size; i++) {
+        if ((data[i] != 0xff) || (megabyter_crt_optimize == 0)) {
+            if (crt_write_chip(data, chip, fd)) {
+                return -1;
+            }
+            return 0;
+        }
+    }
+    return 0;
+}
+
+/* ---------------------------------------------------------------------*/
+
+static const resource_int_t resources_int[] = {
+    { "MegabyterWriteCRT", 0, RES_EVENT_STRICT, (resource_value_t)0,
+      &megabyter_crt_write, set_megabyter_crt_write, NULL },
+    { "MegabyterOptimizeCRT", 1, RES_EVENT_STRICT, (resource_value_t)1,
+      &megabyter_crt_optimize, set_megabyter_crt_optimize, NULL },
+    RESOURCE_INT_LIST_END
+};
+
+int megabyter_resources_init(void)
+{
+    return resources_register_int(resources_int);
+}
+
+void megabyter_resources_shutdown(void)
+{
+}
+
+/* ---------------------------------------------------------------------*/
+
+static const cmdline_option_t cmdline_options[] =
+{
+    { "-megabytercrtwrite", SET_RESOURCE, CMDLINE_ATTRIB_NONE,
+      NULL, NULL, "MegabyterWriteCRT", (resource_value_t)1,
+      NULL, "Enable writing to " CARTRIDGE_NAME_MEGABYTER " .crt image" },
+    { "+megabytercrtwrite", SET_RESOURCE, CMDLINE_ATTRIB_NONE,
+      NULL, NULL, "MegabyterWriteCRT", (resource_value_t)0,
+      NULL, "Disable writing to " CARTRIDGE_NAME_MEGABYTER " .crt image" },
+    { "-megabytercrtoptimize", SET_RESOURCE, CMDLINE_ATTRIB_NONE,
+      NULL, NULL, "MegabyterOptimizeCRT", (resource_value_t)1,
+      NULL, "Enable " CARTRIDGE_NAME_MEGABYTER " .crt image optimize on write" },
+    { "+megabytercrtoptimize", SET_RESOURCE, CMDLINE_ATTRIB_NONE,
+      NULL, NULL, "MegabyterOptimizeCRT", (resource_value_t)0,
+      NULL, "Disable optimizing " CARTRIDGE_NAME_MEGABYTER " .crt image on write" },
+    CMDLINE_LIST_END
+};
+
+int megabyter_cmdline_options_init(void)
+{
+    return cmdline_register_options(cmdline_options);
+}
+
+/* ---------------------------------------------------------------------*/
+
+uint8_t megabyter_roml_read(uint16_t addr)
+{
+    return flash800core_read(megabyter_state, (megabyter_register_00 * MEGABYTER_BANK_SIZE) + (addr & 0x1fff));
+}
+
+void megabyter_roml_store(uint16_t addr, uint8_t value)
+{
+   flash800core_store(megabyter_state, (megabyter_register_00 * MEGABYTER_BANK_SIZE) + (addr & 0x1fff), value);
+}
+
+void megabyter_mmu_translate(unsigned int addr, uint8_t **base, int *start, int *limit)
+{
+    if (megabyter_state && megabyter_state->flash_data) {
+        switch (addr & 0xe000) {
+            case 0x8000:
+                if (megabyter_state->flash_state == FLASH800_STATE_READ) {
+                    *base = megabyter_state->flash_data + (megabyter_register_00 * MEGABYTER_BANK_SIZE) - 0x8000;
+                    *start = 0x8000;
+                    *limit = 0x9ffd;
+                    return;
+                }
+                break;
+            default:
+                break;
+        }
+    }
+    *base = NULL;
+    *start = 0;
+    *limit = 0;
+}
+
+/* ---------------------------------------------------------------------*/
+
+void megabyter_config_init(void)
+{
+    megabyter_io1_store((uint16_t)0xde00, 0);   /* bank 0 */
+    megabyter_io1_store((uint16_t)0xde02, 0);   /* 8k game, LED off */
+}
+
+void megabyter_config_setup(uint8_t *rawcart)
+{
+    int i;
+
+    megabyter_state = lib_malloc(sizeof(flash800_context_t));
+
+    flash800core_init(megabyter_state, maincpu_alarm_context, FLASH800_TYPE_CB, roml_banks);
+
+    for (i = 0; i < MEGABYTER_NUM_BANKS; i++) {
+        memcpy(megabyter_state->flash_data + (i * MEGABYTER_BANK_SIZE),
+               rawcart + (i * MEGABYTER_BANK_SIZE), MEGABYTER_BANK_SIZE);
+    }
+}
+
+/* ---------------------------------------------------------------------*/
+
+static int megabyter_common_attach(const char *filename)
+{
+    if (export_add(&export_res) < 0) {
+        return -1;
+    }
+
+    megabyter_io1_list_item = io_source_register(&megabyter_io1_device);
+    megabyter_filename = lib_strdup(filename);
+
+    return 0;
+}
+
+int megabyter_bin_attach(const char *filename, uint8_t *rawcart)
+{
+    megabyter_filetype = CARTRIDGE_FILETYPE_NONE;
+
+    if (util_file_load(filename, rawcart, MEGABYTER_ROM_SIZE, UTIL_FILE_LOAD_SKIP_ADDRESS) < 0) {
+        return -1;
+    }
+
+    megabyter_filetype = CARTRIDGE_FILETYPE_BIN;
+    return megabyter_common_attach(filename);
+}
+
+int megabyter_crt_attach(FILE *fd, uint8_t *rawcart, const char *filename)
+{
+    crt_chip_header_t chip;
+
+    megabyter_filetype = CARTRIDGE_FILETYPE_NONE;
+    memset(rawcart, 0xff, MEGABYTER_ROM_SIZE); /* empty flash */
+
+    while (1) {
+        if (crt_read_chip_header(&chip, fd)) {
+            break;
+        }
+
+        if (chip.size == MEGABYTER_BANK_SIZE) {
+            if (chip.bank >= MEGABYTER_NUM_BANKS || !(chip.start == 0x8000)) {
+                return -1;
+            }
+            if (crt_read_chip(rawcart, chip.bank << 13, &chip, fd)) {
+                return -1;
+            }
+        } else {
+            return -1;
+        }
+    }
+
+    megabyter_filetype = CARTRIDGE_FILETYPE_CRT;
+    return megabyter_common_attach(filename);
+}
+
+void megabyter_detach(void)
+{
+    if (megabyter_crt_write) {
+        megabyter_flush_image();
+    }
+    flash800core_shutdown(megabyter_state);
+    lib_free(megabyter_state);
+    lib_free(megabyter_filename);
+    megabyter_filename = NULL;
+    io_source_unregister(megabyter_io1_list_item);
+    megabyter_io1_list_item = NULL;
+    export_remove(&export_res);
+}
+
+int megabyter_flush_image(void)
+{
+    if (megabyter_filename != NULL) {
+        if (megabyter_filetype == CARTRIDGE_FILETYPE_BIN) {
+            return megabyter_bin_save(megabyter_filename);
+        } else if (megabyter_filetype == CARTRIDGE_FILETYPE_CRT) {
+            return megabyter_crt_save(megabyter_filename);
+        }
+        return -1;
+    }
+    return -2;
+}
+
+int megabyter_bin_save(const char *filename)
+{
+    FILE *fd;
+    int i;
+    uint8_t *data;
+
+    if (filename == NULL) {
+        return -1;
+    }
+
+    fd = fopen(filename, MODE_WRITE);
+
+    if (fd == NULL) {
+        return -1;
+    }
+
+    data = megabyter_state->flash_data;
+
+    for (i = 0; i < MEGABYTER_NUM_BANKS; i++, data += MEGABYTER_BANK_SIZE) {
+        if (fwrite(data, 1, MEGABYTER_BANK_SIZE, fd) != MEGABYTER_BANK_SIZE) {
+            fclose(fd);
+            return -1;
+        }
+    }
+
+    fclose(fd);
+    return 0;
+}
+
+int megabyter_crt_save(const char *filename)
+{
+    FILE *fd;
+    crt_chip_header_t chip;
+    uint8_t *data;
+    int bank;
+
+    fd = crt_create(filename, CARTRIDGE_MEGABYTER, 1, 0, CARTRIDGE_NAME_MEGABYTER);
+
+    if (fd == NULL) {
+        return -1;
+    }
+
+    chip.type = 2;
+    chip.size = MEGABYTER_BANK_SIZE;
+
+    for (bank = 0; bank < MEGABYTER_NUM_BANKS; bank++) {
+        chip.bank = bank;
+
+        data = megabyter_state->flash_data + (bank * MEGABYTER_BANK_SIZE);
+        chip.start = 0x8000;
+        if (megabyter_write_chip_if_not_empty(fd, &chip, data) != 0) {
+            fclose(fd);
+            return -1;
+        }
+
+    }
+    fclose(fd);
+    return 0;
+}
+
+/* ---------------------------------------------------------------------*/
+
+/* CARTMEGABYTER snapshot module format:
+
+   type  | name       | description
+   --------------------------------
+   BYTE  | register 0 | register 0
+   BYTE  | register 2 | register 2
+   ARRAY | ROML       | 1048576 BYTES of ROML data
+ */
+
+static char snap_module_name[] = "CARTMEGABYTER";
+static char flash_snap_module_name[] = "FLASH800CB";
+#define SNAP_MAJOR   0
+#define SNAP_MINOR   0
+
+int megabyter_snapshot_write_module(snapshot_t *s)
+{
+    snapshot_module_t *m;
+
+    m = snapshot_module_create(s, snap_module_name, SNAP_MAJOR, SNAP_MINOR);
+
+    if (m == NULL) {
+        return -1;
+    }
+
+    if (0
+        || (SMW_B(m, megabyter_register_00) < 0)
+        || (SMW_B(m, megabyter_register_02) < 0)
+        || (SMW_BA(m, roml_banks, MEGABYTER_ROM_SIZE) < 0)) {
+        snapshot_module_close(m);
+        return -1;
+    }
+
+    snapshot_module_close(m);
+
+    if (0
+        || (flash800core_snapshot_write_module(s, megabyter_state, flash_snap_module_name) < 0)) {
+        return -1;
+    }
+
+    return 0;
+}
+
+int megabyter_snapshot_read_module(snapshot_t *s)
+{
+    uint8_t vmajor, vminor;
+    snapshot_module_t *m;
+
+    m = snapshot_module_open(s, snap_module_name, &vmajor, &vminor);
+    if (m == NULL) {
+        return -1;
+    }
+
+    /* Do not accept versions higher than current */
+    if (vmajor > SNAP_MAJOR || vminor > SNAP_MINOR) {
+        snapshot_set_error(SNAPSHOT_MODULE_HIGHER_VERSION);
+        goto fail;
+    }
+
+    if (0
+        || (SMR_B(m, &megabyter_register_00) < 0)
+        || (SMR_B(m, &megabyter_register_02) < 0)
+        || (SMR_BA(m, roml_banks, MEGABYTER_ROM_SIZE) < 0)) {
+        goto fail;
+    }
+
+    snapshot_module_close(m);
+
+    megabyter_state = lib_malloc(sizeof(flash800_context_t));
+
+    flash800core_init(megabyter_state, maincpu_alarm_context, FLASH800_TYPE_CB, roml_banks);
+
+    if (0
+        || (flash800core_snapshot_read_module(s, megabyter_state, flash_snap_module_name) < 0)) {
+        flash800core_shutdown(megabyter_state);
+        lib_free(megabyter_state);
+        return -1;
+    }
+
+    megabyter_common_attach("dummy");
+
+    /* remove dummy filename, set filetype to none */
+    lib_free(megabyter_filename);
+    megabyter_filename = NULL;
+    megabyter_filetype = 0;
+
+    return 0;
+
+fail:
+    snapshot_module_close(m);
+    return -1;
+}

Added: trunk/vice/src/c64/cart/megabyter.h
===================================================================
--- trunk/vice/src/c64/cart/megabyter.h	                        (rev 0)
+++ trunk/vice/src/c64/cart/megabyter.h	2025-08-18 13:33:45 UTC (rev 45737)
@@ -0,0 +1,55 @@
+/*
+ * megabyter.h - Cartridge handling of the megabyter cart.
+ *
+ * Written by
+ *  Chester Kollschen <ma...@ch...>
+ *  groepaz <gr...@gm...>
+ *
+ * This file is part of VICE, the Versatile Commodore Emulator.
+ * See README for copyright notice.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307  USA.
+ *
+ */
+
+#ifndef VICE_MEGABYTER_H
+#define VICE_MEGABYTER_H
+
+#include "types.h"
+
+extern int megabyter_resources_init(void);
+extern void megabyter_resources_shutdown(void);
+extern int megabyter_cmdline_options_init(void);
+
+extern uint8_t megabyter_roml_read(uint16_t addr);
+extern void megabyter_roml_store(uint16_t addr, uint8_t value);
+extern void megabyter_mmu_translate(unsigned int addr, uint8_t **base, int *start, int *limit);
+
+extern void megabyter_config_init(void);
+extern void megabyter_config_setup(uint8_t *rawcart);
+extern int megabyter_bin_attach(const char *filename, uint8_t *rawcart);
+extern int megabyter_crt_attach(FILE *fd, uint8_t *rawcart, const char *filename);
+extern void megabyter_detach(void);
+extern int megabyter_bin_save(const char *filename);
+extern int megabyter_crt_save(const char *filename);
+extern int megabyter_flush_image(void);
+
+struct snapshot_s;
+
+extern int megabyter_snapshot_write_module(struct snapshot_s *s);
+extern int megabyter_snapshot_read_module(struct snapshot_s *s);
+
+#endif

Modified: trunk/vice/src/cartridge.h
===================================================================
--- trunk/vice/src/cartridge.h	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/src/cartridge.h	2025-08-18 13:33:45 UTC (rev 45737)
@@ -274,7 +274,8 @@
 #define CARTRIDGE_BMPDATATURBO         83 /* bmpdataturbo.c */
 #define CARTRIDGE_PROFIDOS             84 /* profidos.c */
 #define CARTRIDGE_MAGIC_DESK_16        85 /* magicdesk16.c */
-#define CARTRIDGE_LAST                 85 /* cartconv: last cartridge in list */
+#define CARTRIDGE_MEGABYTER            86 /* megabyter.c */
+#define CARTRIDGE_LAST                 86 /* cartconv: last cartridge in list */
 
 /* list of canonical names for the c64 cartridges:
    note: often it is hard to determine "the" official name, let alone the way it
@@ -352,6 +353,7 @@
 #define CARTRIDGE_NAME_MAGIC_VOICE        "Magic Voice" /* all lowercase on cart ? */
 #define CARTRIDGE_NAME_MIDI_MAPLIN        "Maplin MIDI"
 #define CARTRIDGE_NAME_MAX_BASIC          "MAX Basic"
+#define CARTRIDGE_NAME_MEGABYTER          "PTV Megabyter"
 #define CARTRIDGE_NAME_MIKRO_ASSEMBLER    "Mikro Assembler"
 #define CARTRIDGE_NAME_MMC64              "MMC64" /* see manual */
 #define CARTRIDGE_NAME_MMC_REPLAY         "MMC Replay" /* see manual */

Modified: trunk/vice/src/core/Makefile.am
===================================================================
--- trunk/vice/src/core/Makefile.am	2025-08-16 10:52:49 UTC (rev 45736)
+++ trunk/vice/src/core/Makefile.am	2025-08-18 13:33:45 UTC (rev 45737)
@@ -23,6 +23,7 @@
 	cs8900.c \
 	cs8900.h \
 	flash040core.c \
+	flash800core.c \
 	fmopl.c \
 	fmopl.h \
 	i8255a.c \

Added: trunk/vice/src/core/flash800core.c
===================================================================
--- trunk/vice/src/core/flash800core.c	                        (rev 0)
+++ trunk/vice/src/core/flash800core.c	2025-08-18 13:33:45 UTC (rev 45737)
@@ -0,0 +1,543 @@
+/*
+ * flash800core.c - (MX)29F800C[TB] Flash emulation (preliminary, incomplete).
+ *
+ * Written by
+ *  Hannu Nuotio <han...@tu...>
+ * Extended by
+ *  Marko Makela <mar...@ik...>
+ * Extended by
+ *  Chester Kollschen <ma...@kn...>
+ *
+ * This file is part of VICE, the Versatile Commodore Emulator.
+ * See README for copyright notice.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 51 Franklin Street, Suite 500, Boston, MA 02110-1335 USA.
+ *
+ */
+
+#include "vice.h"
+
+#include <stdio.h>
+#include <string.h>
+
+#include "alarm.h"
+#include "flash800.h"
+#include "lib.h"
+#include "log.h"
+#include "maincpu.h"
+#include "snapshot.h"
+#include "types.h"
+
+/* -------------------------------------------------------------------------- */
+
+/* #define FLASH_DEBUG_ENABLED */
+
+#ifdef FLASH_DEBUG_ENABLED
+#define FLASH_DEBUG(x) log_printf x
+#else
+#define FLASH_DEBUG(x)
+#endif
+
+struct flash_types_s {
+    uint8_t manufacturer_ID;
+    uint8_t device_ID;
+    uint8_t device_ID_addr;
+    unsigned int size;
+    unsigned int sector_mask;
+    unsigned int sector_size;
+    unsigned int sector_shift;
+    unsigned int magic_1_addr;
+    unsigned int magic_2_addr;
+    unsigned int magic_1_mask;
+    unsigned int magic_2_mask;
+    uint8_t status_toggle_bits;
+    unsigned int erase_sector_timeout_cycles;
+    unsigned int erase_sector_cycles;
+    unsigned int erase_chip_cycles;
+};
+typedef struct flash_types_s flash_types_t;
+
+static const flash_types_t flash_types[FLASH800_TYPE_NUM] = {
+    /* MX29F800CB */
+    { 0xc2, 0x58, 1,
+      0x100000,
+      0x0f0000, 0x010000, 16,
+      0xaaa, 0x555, 0xfff, 0xfff,
+      0x40,
+      40, 700000, 8000000}, /* may take up to 15s and 32s */
+};
+
+/* -------------------------------------------------------------------------- */
+
+inline static int flash_magic_1(flash800_context_t *flash800_context, unsigned int addr)
+{
+    return ((addr & flash_types[flash800_context->flash_type].magic_1_mask) == flash_types[flash800_context->flash_type].magic_1_addr);
+}
+
+inline static int flash_magic_2(flash800_context_t *flash800_context, unsigned int addr)
+{
+    return ((addr & flash_types[flash800_context->flash_type].magic_2_mask) == flash_types[flash800_context->flash_type].magic_2_addr);
+}
+
+inline static void flash_clear_erase_mask(flash800_context_t *flash800_context)
+{
+    int i;
+
+    for (i = 0; i < FLASH800_ERASE_MASK_SIZE; ++i) {
+        flash800_context->erase_mask[i] = 0;
+    }
+}
+
+inline static unsigned int flash_sector_to_addr(flash800_context_t *flash800_context, unsigned int sector)
+{
+    unsigned int sector_size = flash_types[flash800_context->flash_type].sector_size;
+
+    return sector * sector_size;
+}
+
+inline static unsigned int flash_addr_to_sector_number(flash800_context_t *flash800_context, unsigned int addr)
+{
+    unsigned int sector_addr = flash_types[flash800_context->flash_type].sector_mask & addr;
+    unsigned int sector_shift = flash_types[flash800_context->flash_type].sector_shift;
+
+    return sector_addr >> sector_shift;
+}
+
+inline static void flash_add_sector_to_erase_mask(flash800_context_t *flash800_context, unsigned int addr)
+{
+    unsigned int sector_num = flash_addr_to_sector_number(flash800_context, addr);
+
+    flash800_context->erase_mask[sector_num >> 3] |= (uint8_t)(1 << (sector_num & 0x7));
+}
+
+inline static void flash_erase_sector(flash800_context_t *flash800_context, unsigned int sector)
+{
+    unsigned int sector_size = flash_types[flash800_context->flash_type].sector_size;
+    unsigned int sector_addr;
+
+    sector_addr = flash_sector_to_addr(flash800_context, sector);
+
+    FLASH_DEBUG(("Erasing 0x%x - 0x%x", sector_addr, sector_addr + sector_size - 1));
+    memset(&(flash800_context->flash_data[sector_addr]), 0xff, sector_size);
+    flash800_context->flash_dirty = 1;
+}
+
+inline static void flash_erase_chip(flash800_context_t *flash800_context)
+{
+    FLASH_DEBUG(("Erasing chip"));
+    memset(flash800_context->flash_data, 0xff, flash_types[flash800_context->flash_type].size);
+    flash800_context->flash_dirty = 1;
+}
+
+inline static int flash_program_byte(flash800_context_t *flash800_context, unsigned int addr, uint8_t byte)
+{
+    uint8_t old_data = flash800_context->flash_data[addr];
+    uint8_t new_data = old_data & byte;
+
+    FLASH_DEBUG(("Programming 0x%05x with 0x%02x (%02x->%02x)", addr, byte, old_data, old_data & byte));
+    flash800_context->program_byte = byte;
+    flash800_context->flash_data[addr] = new_data;
+    flash800_context->flash_dirty = 1;
+
+    return (new_data == byte) ? 1 : 0;
+}
+
+inline static int flash_write_operation_status(flash800_context_t *flash800_context)
+{
+    return ((flash800_context->program_byte ^ 0x80) & 0x80)   /* DQ7 = inverse of programmed data */
+           | (((unsigned int)maincpu_clk & 2) << 5)           /* DQ6 = toggle bit (2 us) */
+           | (1 << 5)                                         /* DQ5 = timeout */
+    ;
+}
+
+inline static int flash_erase_operation_status(flash800_context_t *flash800_context)
+{
+    int v;
+
+    /* DQ6 = toggle bit */
+    v = flash800_context->program_byte;
+
+    /* toggle the toggle bit(s) */
+    /* FIXME better toggle bit II emulation */
+    flash800_context->program_byte ^= flash_types[flash800_context->flash_type].status_toggle_bits;
+
+    /* DQ3 = sector erase timer */
+    if (flash800_context->flash_state != FLASH800_STATE_SECTOR_ERASE_TIMEOUT) {
+        v |= 0x08;
+    }
+
+    return v;
+}
+
+/* -------------------------------------------------------------------------- */
+
+static void erase_alarm_handler(CLOCK offset, void *data)
+{
+    unsigned int i, j;
+    uint8_t m;
+    flash800_context_t *flash800_context = (flash800_context_t *)data;
+
+    alarm_unset(flash800_context->erase_alarm);
+
+    FLASH_DEBUG(("Erase alarm, state %i", (int)flash800_context->flash_state));
+
+    switch (flash800_context->flash_state) {
+        case FLASH800_STATE_SECTOR_ERASE_TIMEOUT:
+            alarm_set(flash800_context->erase_alarm, maincpu_clk + flash_types[flash800_context->flash_type].erase_sector_cycles);
+            flash800_context->flash_state = FLASH800_STATE_SECTOR_ERASE;
+            break;
+        case FLASH800_STATE_SECTOR_ERASE:
+            for (i = 0; i < (8 * FLASH800_ERASE_MASK_SIZE); ++i) {
+                j = i >> 3;
+                m = (uint8_t)(1 << (i & 0x7));
+                if (flash800_context->erase_mask[j] & m) {
+                    flash_erase_sector(flash800_context, i);
+                    flash800_context->erase_mask[j] &= (uint8_t) ~m;
+                    break;
+                }
+            }
+
+            for (i = 0, m = 0; i < FLASH800_ERASE_MASK_SIZE; ++i) {
+                m |= flash800_context->erase_mask[i];
+            }
+
+            if (m != 0) {
+                alarm_set(flash800_context->erase_alarm, maincpu_clk + flash_types[flash800_context->flash_type].erase_sector_cycles);
+            } else {
+                flash800_context->flash_state = flash800_context->flash_base_state;
+            }
+            break;
+
+        case FLASH800_STATE_CHIP_ERASE:
+            flash_erase_chip(flash800_context);
+            flash800_context->flash_state = flash800_context->flash_base_state;
+            break;
+
+        default:
+            FLASH_DEBUG(("Erase alarm - error, state %i unhandled!", (int)flash800_context->flash_state));
+            break;
+    }
+}
+
+/* -------------------------------------------------------------------------- */
+
+static void flash800core_store_internal(flash800_context_t *flash800_context,
+                                        unsigned int addr, uint8_t byte)
+{
+#ifdef FLASH_DEBUG_ENABLED
+    flash800_state_t old_state = flash800_context->flash_state;
+    flash800_state_t old_base_state = flash800_context->flash_base_state;
+#endif
+
+    switch (flash800_context->flash_state) {
+        case FLASH800_STATE_READ:
+            if (flash_magic_1(flash800_context, addr) && (byte == 0xaa)) {
+                flash800_context->flash_state = FLASH800_STATE_MAGIC_1;
+            }
+            break;
+
+        case FLASH800_STATE_MAGIC_1:
+            if (flash_magic_2(flash800_context, addr) && (byte == 0x55)) {
+                flash800_context->flash_state = FLASH800_STATE_MAGIC_2;
+            } else {
+                flash800_context->flash_state = flash800_context->flash_base_state;
+            }
+            break;
+
+        case FLASH800_STATE_MAGIC_2:
+            if (flash_magic_1(flash800_context, addr)) {
+                switch (byte) {
+                    case 0x90:
+                        flash800_context->flash_state = FLASH800_STATE_AUTOSELECT;
+                        flash800_context->flash_base_state = FLASH800_STATE_AUTOSELECT;
+                        break;
+                    case 0xf0:
+                        flash800_context->flash_state = FLASH800_STATE_READ;
+                        flash800_context->flash_base_state = FLASH800_STATE_READ;
+                        break;
+                    case 0xa0:
+                        flash800_context->flash_state = FLASH800_STATE_BYTE_PROGRAM;
+                        break;
+                    case 0x80:
+                        flash800_context->flash_state = FLASH800_STATE_ERASE_MAGIC_1;
+                        break;
+                    default:
+                        flash800_context->flash_state = flash800_context->flash_base_state;
+                        break;
+                }
+            } else {
+                flash800_context->flash_state = flash800_context->flash_base_state;
+            }
+            break;
+
+        case FLASH800_STATE_BYTE_PROGRAM:
+            if (flash_program_byte(flash800_context, addr, byte)) {
+                /* The byte program time is short enough to ignore */
+                flash800_context->flash_state = flash800_context->flash_base_state;
+            } else {
+                flash800_context->flash_state = FLASH800_STATE_BYTE_PROGRAM_ERROR;
+            }
+            break;
+
+        case FLASH800_STATE_ERASE_MAGIC_1:
+            if (flash_magic_1(flash800_context, addr) && (byte == 0xaa)) {
+                flash800_context->flash_state = FLASH800_STATE_ERASE_MAGIC_2;
+            } else {
+                flash800_context->flash_state = flash800_context->flash_base_state;
+            }
+            break;
+
+        case FLASH800_STATE_ERASE_MAGIC_2:
+            if (flash_magic_2(flash800_context, addr) && (byte == 0x55)) {
+                flash800_context->flash_state = FLASH800_STATE_ERASE_SELECT;
+            } else {
+                flash800_context->flash_state = flash800_context->flash_base_state;
+            }
+            break;
+
+        case FLASH800_STATE_ERASE_SELECT:
+            if (flash_magic_1(flash800_context, addr) && (byte == 0x10)) {
+                flash800_context->flash_state = FLASH800_STATE_CHIP_ERASE;
+                flash800_context->program_byte = 0;
+                alarm_set(flash800_context->erase_alarm, maincpu_clk + flash_types[flash800_context->flash_type].erase_chip_cycles);
+            } else if (byte == 0x30) {
+                flash_add_sector_to_erase_mask(flash800_context, addr);
+                flash800_context->program_byte = 0;
+                flash800_context->flash_state = FLASH800_STATE_SECTOR_ERASE_TIMEOUT;
+                alarm_set(flash800_context->erase_alarm, maincpu_clk + flash_types[flash800_context->flash_type].erase_sector_timeout_cycles);
+            } else {
+                flash800_context->flash_state = flash800_context->flash_base_state;
+            }
+            break;
+
+        case FLASH800_STATE_SECTOR_ERASE_TIMEOUT:
+            if (byte == 0x30) {
+                flash_add_sector_to_erase_mask(flash800_context, addr);
+            } else {
+                flash800_context->flash_state = flash800_context->flash_base_state;
+                flash_clear_erase_mask(flash800_context);
+                alarm_unset(flash800_context->erase_alarm);
+            }
+            break;
+
+        case FLASH800_STATE_SECTOR_ERASE:
+            /* TODO not all models support suspending */
+            if (byte == 0xb0) {
+                flash800_context->flash_state = FLASH800_STATE_SECTOR_ERASE_SUSPEND;
+                alarm_unset(flash800_context->erase_alarm);
+            }
+            break;
+
+        case FLASH800_STATE_SECTOR_ERASE_SUSPEND:
+            if (byte == 0x30) {
+                flash800_context->flash_state = FLASH800_STATE_SECTOR_ERASE;
+                alarm_set(flash800_context->erase_alarm, maincpu_clk + flash_types[flash800_context->flash_type].erase_sector_cycles);
+            }
+            break;
+
+        case FLASH800_STATE_BYTE_PROGRAM_ERROR:
+        case FLASH800_STATE_AUTOSELECT:
+            if (flash_magic_1(flash800_context, addr) && (byte == 0xaa)) {
+                flash800_context->flash_state = FLASH800_STATE_MAGIC_1;
+            }
+            if (byte == 0xf0) {
+                flash800_context->flash_state = FLASH800_STATE_READ;
+                flash800_context->flash_base_state = FLASH800_STATE_READ;
+            }
+            break;
+
+        case FLASH800_STATE_CHIP_ERASE:
+        default:
+            break;
+    }
+
+    FLASH_DEBUG(("Write %02x to %05x, state %i->%i (base state %i->%i)", byte, addr, (int)old_state, (int)flash800_context->flash_state, (int)old_base_state, (int)flash800_context->flash_base_state));
+}
+
+/* -------------------------------------------------------------------------- */
+
+void flash800core_store(flash800_context_t *flash800_context, unsigned int addr, uint8_t byte)
+{
+    if (maincpu_rmw_flag) {
+        maincpu_clk--;
+        flash800core_store_internal(flash800_context, addr, flash800_context->last_read);
+        maincpu_clk++;
+    }
+
+    flash800core_store_internal(flash800_context, addr, byte);
+}
+
+uint8_t flash800core_read(flash800_context_t *flash800_context, unsigned int addr)
+{
+    uint8_t value;
+#ifdef FLASH_DEBUG_ENABLED
+    flash800_state_t old_state = flash800_context->flash_state;
+#endif
+
+    switch (flash800_context->flash_state) {
+        case FLASH800_STATE_AUTOSELECT:
+
+            if ((addr & 0xff) == 0) {
+                value = flash_types[flash800_context->flash_type].manufacturer_ID;
+            } else if ((addr & 0xff) == flash_types[flash800_context->flash_type].device_ID_addr) {
+                value = flash_types[flash800_context->flash_type].device_ID;
+            } else if ((addr & 0xff) == 2) {
+                value = 0;
+            } else {
+                value = flash800_context->flash_data[addr];
+            }
+            break;
+
+        case FLASH800_STATE_BYTE_PROGRAM_ERROR:
+            value = flash_write_operation_status(flash800_context);
+            break;
+
+        case FLASH800_STATE_SECTOR_ERASE_SUSPEND:
+        case FLASH800_STATE_CHIP_ERASE:
+        case FLASH800_STATE_SECTOR_ERASE:
+        case FLASH800_STATE_SECTOR_ERASE_TIMEOUT:
+            value = flash_erase_operation_status(flash800_context);
+            break;
+
+        default:
+        /* The state doesn't reset if a read occurs during a command sequence */
+        /* fall through */
+        case FLASH800_STATE_READ:
+            value = flash800_context->flash_data[addr];
+            break;
+    }
+
+#ifdef FLASH_DEBUG_ENABLED
+    if (old_state != FLASH800_STATE_READ) {
+        FLASH_DEBUG(("Read %02x from %05x, state %i->%i", value, addr, (int)old_state, (int)flash800_context->flash_state));
+    }
+#endif
+
+    flash800_context->last_read = value;
+    return value;
+}
+
+uint8_t flash800core_peek(flash800_context_t *flash800_context, unsigned int addr)
+{
+    return flash800_context->flash_data[addr];
+}
+
+void flash800core_reset(flash800_context_t *flash800_cont...
 
[truncated message content]

Revision: 45736
          http://sourceforge.net/p/vice-emu/code/45736
Author:   gpz
Date:     2025-08-16 10:52:49 +0000 (Sat, 16 Aug 2025)
Log Message:
-----------
preliminary fix for #2160

Modified Paths:
--------------
    trunk/vice/src/plus4/plus4tcbm.c

Modified: trunk/vice/src/plus4/plus4tcbm.c
===================================================================
--- trunk/vice/src/plus4/plus4tcbm.c	2025-08-11 14:08:51 UTC (rev 45735)
+++ trunk/vice/src/plus4/plus4tcbm.c	2025-08-16 10:52:49 UTC (rev 45736)
@@ -87,8 +87,13 @@
     log_debug(LOG_DEFAULT, "TCBM PB READ DATA %02x DDR %02x",
               tiatcbm[dnr].datab, tiatcbm[dnr].ddrb);
 #endif
+
+#if 0 /* FIXME: remove when we can confirm the code below is correct, see #2160 */
     return (tiatcbm[dnr].datab | ~tiatcbm[dnr].ddrb)
            & (tpid_outputc[dnr] | 0xfc);
+#endif
+    return ((tiatcbm[dnr].datab & tiatcbm[dnr].ddrb) |
+            (tpid_outputc[dnr] & (~tiatcbm[dnr].ddrb & 0x03)));
 }
 
 inline static uint8_t datac_read(unsigned int dnr)
@@ -97,9 +102,14 @@
     log_debug(LOG_DEFAULT, "TCBM PC READ DATA %02x DDR %02x",
               tiatcbm[dnr].datac, tiatcbm[dnr].ddrc);
 #endif
+#if 0 /* FIXME: remove when we can confirm the code below is correct, see #2160 */
     return (tiatcbm[dnr].datac | ~tiatcbm[dnr].ddrc)
            & ((tpid_outputc[dnr] << 4) | 0x7f)
            & ((tpid_outputc[dnr] >> 1) | 0xbf);
+#endif
+    return ((tiatcbm[dnr].datac & tiatcbm[dnr].ddrc) |
+            ((tpid_outputc[dnr] << 4) & (~tiatcbm[dnr].ddrc) & 0x80) |
+            ((tpid_outputc[dnr] >> 1) & (~tiatcbm[dnr].ddrc) & 0x40));
 }
 
 inline static void store_pa(unsigned int dnr)

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.

Revision: 45735
          http://sourceforge.net/p/vice-emu/code/45735
Author:   gpz
Date:     2025-08-11 14:08:51 +0000 (Mon, 11 Aug 2025)
Log Message:
-----------
allow uppercase characters with and without shift in swedish symbolic keympas, should fix problem(s) with caps-lock and Z

Modified Paths:
--------------
    trunk/vice/data/C128/gtk3_sym_se.vkm
    trunk/vice/data/C64/gtk3_sym_se.vkm
    trunk/vice/data/C64DTV/gtk3_sym_se.vkm
    trunk/vice/data/SCPU64/gtk3_sym_se.vkm

Modified: trunk/vice/data/C128/gtk3_sym_se.vkm
===================================================================
--- trunk/vice/data/C128/gtk3_sym_se.vkm	2025-08-11 13:02:24 UTC (rev 45734)
+++ trunk/vice/data/C128/gtk3_sym_se.vkm	2025-08-11 14:08:51 UTC (rev 45735)
@@ -292,32 +292,32 @@
 8 3 3 8
 9 4 0 8
 
-A 1 2 1
-B 3 4 1
-C 2 4 1
-D 2 2 1
-E 1 6 1
-F 2 5 1
-G 3 2 1
-H 3 5 1
-I 4 1 1
-J 4 2 1
-K 4 5 1
-L 5 2 1
-M 4 4 1
-N 4 7 1
-O 4 6 1
-P 5 1 1
-Q 7 6 1
-R 2 1 1
-S 1 5 1
-T 2 6 1
-U 3 6 1
-V 3 7 1
-W 1 1 1
-X 2 7 1
-Y 3 1 1
-Z 1 4 1
+A 1 2 8
+B 3 4 8
+C 2 4 8
+D 2 2 8
+E 1 6 8
+F 2 5 8
+G 3 2 8
+H 3 5 8
+I 4 1 8
+J 4 2 8
+K 4 5 8
+L 5 2 8
+M 4 4 8
+N 4 7 8
+O 4 6 8
+P 5 1 8
+Q 7 6 8
+R 2 1 8
+S 1 5 8
+T 2 6 8
+U 3 6 8
+V 3 7 8
+W 1 1 8
+X 2 7 8
+Y 3 1 8
+Z 1 4 8
 
 a 1 2 8
 b 3 4 8
@@ -416,4 +416,4 @@
 dead_circumflex     6 6 16 # A_UP
 dead_tilde          6 6 1  # shift+A_UP
 dead_perispomeni    6 6 1  # shift+A_UP
-dead_diaeresis      7 3 1  # "
\ No newline at end of file
+dead_diaeresis      7 3 1  # "

Modified: trunk/vice/data/C64/gtk3_sym_se.vkm
===================================================================
--- trunk/vice/data/C64/gtk3_sym_se.vkm	2025-08-11 13:02:24 UTC (rev 45734)
+++ trunk/vice/data/C64/gtk3_sym_se.vkm	2025-08-11 14:08:51 UTC (rev 45735)
@@ -237,32 +237,32 @@
 8 3 3 0
 9 4 0 0
 
-A 1 2 1
-B 3 4 1
-C 2 4 1
-D 2 2 1
-E 1 6 1
-F 2 5 1
-G 3 2 1
-H 3 5 1
-I 4 1 1
-J 4 2 1
-K 4 5 1
-L 5 2 1
-M 4 4 1
-N 4 7 1
-O 4 6 1
-P 5 1 1
-Q 7 6 1
-R 2 1 1
-S 1 5 1
-T 2 6 1
-U 3 6 1
-V 3 7 1
-W 1 1 1
-X 2 7 1
-Y 3 1 1
-Z 1 4 1
+A 1 2 8
+B 3 4 8
+C 2 4 8
+D 2 2 8
+E 1 6 8
+F 2 5 8
+G 3 2 8
+H 3 5 8
+I 4 1 8
+J 4 2 8
+K 4 5 8
+L 5 2 8
+M 4 4 8
+N 4 7 8
+O 4 6 8
+P 5 1 8
+Q 7 6 8
+R 2 1 8
+S 1 5 8
+T 2 6 8
+U 3 6 8
+V 3 7 8
+W 1 1 8
+X 2 7 8
+Y 3 1 8
+Z 1 4 8
 a 1 2 8
 b 3 4 8
 c 2 4 8

Modified: trunk/vice/data/C64DTV/gtk3_sym_se.vkm
===================================================================
--- trunk/vice/data/C64DTV/gtk3_sym_se.vkm	2025-08-11 13:02:24 UTC (rev 45734)
+++ trunk/vice/data/C64DTV/gtk3_sym_se.vkm	2025-08-11 14:08:51 UTC (rev 45735)
@@ -237,32 +237,32 @@
 8 3 3 0
 9 4 0 0
 
-A 1 2 1
-B 3 4 1
-C 2 4 1
-D 2 2 1
-E 1 6 1
-F 2 5 1
-G 3 2 1
-H 3 5 1
-I 4 1 1
-J 4 2 1
-K 4 5 1
-L 5 2 1
-M 4 4 1
-N 4 7 1
-O 4 6 1
-P 5 1 1
-Q 7 6 1
-R 2 1 1
-S 1 5 1
-T 2 6 1
-U 3 6 1
-V 3 7 1
-W 1 1 1
-X 2 7 1
-Y 3 1 1
-Z 1 4 1
+A 1 2 8
+B 3 4 8
+C 2 4 8
+D 2 2 8
+E 1 6 8
+F 2 5 8
+G 3 2 8
+H 3 5 8
+I 4 1 8
+J 4 2 8
+K 4 5 8
+L 5 2 8
+M 4 4 8
+N 4 7 8
+O 4 6 8
+P 5 1 8
+Q 7 6 8
+R 2 1 8
+S 1 5 8
+T 2 6 8
+U 3 6 8
+V 3 7 8
+W 1 1 8
+X 2 7 8
+Y 3 1 8
+Z 1 4 8
 a 1 2 8
 b 3 4 8
 c 2 4 8

Modified: trunk/vice/data/SCPU64/gtk3_sym_se.vkm
===================================================================
--- trunk/vice/data/SCPU64/gtk3_sym_se.vkm	2025-08-11 13:02:24 UTC (rev 45734)
+++ trunk/vice/data/SCPU64/gtk3_sym_se.vkm	2025-08-11 14:08:51 UTC (rev 45735)
@@ -237,32 +237,32 @@
 8 3 3 0
 9 4 0 0
 
-A 1 2 1
-B 3 4 1
-C 2 4 1
-D 2 2 1
-E 1 6 1
-F 2 5 1
-G 3 2 1
-H 3 5 1
-I 4 1 1
-J 4 2 1
-K 4 5 1
-L 5 2 1
-M 4 4 1
-N 4 7 1
-O 4 6 1
-P 5 1 1
-Q 7 6 1
-R 2 1 1
-S 1 5 1
-T 2 6 1
-U 3 6 1
-V 3 7 1
-W 1 1 1
-X 2 7 1
-Y 3 1 1
-Z 1 4 1
+A 1 2 8
+B 3 4 8
+C 2 4 8
+D 2 2 8
+E 1 6 8
+F 2 5 8
+G 3 2 8
+H 3 5 8
+I 4 1 8
+J 4 2 8
+K 4 5 8
+L 5 2 8
+M 4 4 8
+N 4 7 8
+O 4 6 8
+P 5 1 8
+Q 7 6 8
+R 2 1 8
+S 1 5 8
+T 2 6 8
+U 3 6 8
+V 3 7 8
+W 1 1 8
+X 2 7 8
+Y 3 1 8
+Z 1 4 8
 a 1 2 8
 b 3 4 8
 c 2 4 8

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.

Revision: 45734
          http://sourceforge.net/p/vice-emu/code/45734
Author:   gpz
Date:     2025-08-11 13:02:24 +0000 (Mon, 11 Aug 2025)
Log Message:
-----------
fix for accidently introduced DC offset in 6581 filters, fix by leandro nini

Modified Paths:
--------------
    trunk/vice/src/resid/filter8580new.h

Modified: trunk/vice/src/resid/filter8580new.h
===================================================================
--- trunk/vice/src/resid/filter8580new.h	2025-08-09 16:54:29 UTC (rev 45733)
+++ trunk/vice/src/resid/filter8580new.h	2025-08-11 13:02:24 UTC (rev 45734)
@@ -961,7 +961,7 @@
     my $sum;
     if (@sumFilt) {
         $sumV = (@sumVoice) ? " + ".join(" + ", @sumVoice) : "";
-        $sum = "(((".join(" + ", @sumFilt).") * mf.filterGain) >> 12)" . $sumV;
+        $sum = "((((".join(" + ", @sumFilt).") * f.filterGain) + dc_offset) >> 12)" . $sumV;
     } else {
         $sum = join(" + ", @sumVoice) || "0";
     }
@@ -974,6 +974,7 @@
   // Sum inputs routed into the mixer.
   int Vi = 0;
   int offset = 0;
+  const int dc_offset = 32767 * ((1 << 12) - f.filterGain);
 
   switch (mix & 0x7f) {
   case 0x00:
@@ -1041,451 +1042,451 @@
     offset = mixer_offset<4>::value;
     break;
   case 0x10:
-    Vi = (((Vlp) * f.filterGain) >> 12);
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12);
     offset = mixer_offset<1>::value;
     break;
   case 0x11:
-    Vi = (((Vlp) * f.filterGain) >> 12) + v1;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + v1;
     offset = mixer_offset<2>::value;
     break;
   case 0x12:
-    Vi = (((Vlp) * f.filterGain) >> 12) + v2;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + v2;
     offset = mixer_offset<2>::value;
     break;
   case 0x13:
-    Vi = (((Vlp) * f.filterGain) >> 12) + v2 + v1;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + v2 + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x14:
-    Vi = (((Vlp) * f.filterGain) >> 12) + v3;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + v3;
     offset = mixer_offset<2>::value;
     break;
   case 0x15:
-    Vi = (((Vlp) * f.filterGain) >> 12) + v3 + v1;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x16:
-    Vi = (((Vlp) * f.filterGain) >> 12) + v3 + v2;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v2;
     offset = mixer_offset<3>::value;
     break;
   case 0x17:
-    Vi = (((Vlp) * f.filterGain) >> 12) + v3 + v2 + v1;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v2 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x18:
-    Vi = (((Vlp) * f.filterGain) >> 12) + ve;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + ve;
     offset = mixer_offset<2>::value;
     break;
   case 0x19:
-    Vi = (((Vlp) * f.filterGain) >> 12) + ve + v1;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x1a:
-    Vi = (((Vlp) * f.filterGain) >> 12) + ve + v2;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v2;
     offset = mixer_offset<3>::value;
     break;
   case 0x1b:
-    Vi = (((Vlp) * f.filterGain) >> 12) + ve + v2 + v1;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v2 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x1c:
-    Vi = (((Vlp) * f.filterGain) >> 12) + ve + v3;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3;
     offset = mixer_offset<3>::value;
     break;
   case 0x1d:
-    Vi = (((Vlp) * f.filterGain) >> 12) + ve + v3 + v1;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x1e:
-    Vi = (((Vlp) * f.filterGain) >> 12) + ve + v3 + v2;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2;
     offset = mixer_offset<4>::value;
     break;
   case 0x1f:
-    Vi = (((Vlp) * f.filterGain) >> 12) + ve + v3 + v2 + v1;
+    Vi = ((((Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x20:
-    Vi = (((Vbp) * f.filterGain) >> 12);
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12);
     offset = mixer_offset<1>::value;
     break;
   case 0x21:
-    Vi = (((Vbp) * f.filterGain) >> 12) + v1;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + v1;
     offset = mixer_offset<2>::value;
     break;
   case 0x22:
-    Vi = (((Vbp) * f.filterGain) >> 12) + v2;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + v2;
     offset = mixer_offset<2>::value;
     break;
   case 0x23:
-    Vi = (((Vbp) * f.filterGain) >> 12) + v2 + v1;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + v2 + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x24:
-    Vi = (((Vbp) * f.filterGain) >> 12) + v3;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + v3;
     offset = mixer_offset<2>::value;
     break;
   case 0x25:
-    Vi = (((Vbp) * f.filterGain) >> 12) + v3 + v1;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + v3 + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x26:
-    Vi = (((Vbp) * f.filterGain) >> 12) + v3 + v2;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + v3 + v2;
     offset = mixer_offset<3>::value;
     break;
   case 0x27:
-    Vi = (((Vbp) * f.filterGain) >> 12) + v3 + v2 + v1;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + v3 + v2 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x28:
-    Vi = (((Vbp) * f.filterGain) >> 12) + ve;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + ve;
     offset = mixer_offset<2>::value;
     break;
   case 0x29:
-    Vi = (((Vbp) * f.filterGain) >> 12) + ve + v1;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x2a:
-    Vi = (((Vbp) * f.filterGain) >> 12) + ve + v2;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v2;
     offset = mixer_offset<3>::value;
     break;
   case 0x2b:
-    Vi = (((Vbp) * f.filterGain) >> 12) + ve + v2 + v1;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v2 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x2c:
-    Vi = (((Vbp) * f.filterGain) >> 12) + ve + v3;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v3;
     offset = mixer_offset<3>::value;
     break;
   case 0x2d:
-    Vi = (((Vbp) * f.filterGain) >> 12) + ve + v3 + v1;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x2e:
-    Vi = (((Vbp) * f.filterGain) >> 12) + ve + v3 + v2;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2;
     offset = mixer_offset<4>::value;
     break;
   case 0x2f:
-    Vi = (((Vbp) * f.filterGain) >> 12) + ve + v3 + v2 + v1;
+    Vi = ((((Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x30:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12);
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12);
     offset = mixer_offset<2>::value;
     break;
   case 0x31:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + v1;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x32:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + v2;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v2;
     offset = mixer_offset<3>::value;
     break;
   case 0x33:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + v2 + v1;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v2 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x34:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + v3;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3;
     offset = mixer_offset<3>::value;
     break;
   case 0x35:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + v3 + v1;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x36:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + v3 + v2;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v2;
     offset = mixer_offset<4>::value;
     break;
   case 0x37:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + v3 + v2 + v1;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v2 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x38:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + ve;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve;
     offset = mixer_offset<3>::value;
     break;
   case 0x39:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + ve + v1;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x3a:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + ve + v2;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v2;
     offset = mixer_offset<4>::value;
     break;
   case 0x3b:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + ve + v2 + v1;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v2 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x3c:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + ve + v3;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3;
     offset = mixer_offset<4>::value;
     break;
   case 0x3d:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + ve + v3 + v1;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x3e:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + ve + v3 + v2;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2;
     offset = mixer_offset<5>::value;
     break;
   case 0x3f:
-    Vi = (((Vbp + Vlp) * f.filterGain) >> 12) + ve + v3 + v2 + v1;
+    Vi = ((((Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2 + v1;
     offset = mixer_offset<6>::value;
     break;
   case 0x40:
-    Vi = (((Vhp) * f.filterGain) >> 12);
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12);
     offset = mixer_offset<1>::value;
     break;
   case 0x41:
-    Vi = (((Vhp) * f.filterGain) >> 12) + v1;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + v1;
     offset = mixer_offset<2>::value;
     break;
   case 0x42:
-    Vi = (((Vhp) * f.filterGain) >> 12) + v2;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + v2;
     offset = mixer_offset<2>::value;
     break;
   case 0x43:
-    Vi = (((Vhp) * f.filterGain) >> 12) + v2 + v1;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + v2 + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x44:
-    Vi = (((Vhp) * f.filterGain) >> 12) + v3;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + v3;
     offset = mixer_offset<2>::value;
     break;
   case 0x45:
-    Vi = (((Vhp) * f.filterGain) >> 12) + v3 + v1;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + v3 + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x46:
-    Vi = (((Vhp) * f.filterGain) >> 12) + v3 + v2;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + v3 + v2;
     offset = mixer_offset<3>::value;
     break;
   case 0x47:
-    Vi = (((Vhp) * f.filterGain) >> 12) + v3 + v2 + v1;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + v3 + v2 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x48:
-    Vi = (((Vhp) * f.filterGain) >> 12) + ve;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + ve;
     offset = mixer_offset<2>::value;
     break;
   case 0x49:
-    Vi = (((Vhp) * f.filterGain) >> 12) + ve + v1;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + ve + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x4a:
-    Vi = (((Vhp) * f.filterGain) >> 12) + ve + v2;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + ve + v2;
     offset = mixer_offset<3>::value;
     break;
   case 0x4b:
-    Vi = (((Vhp) * f.filterGain) >> 12) + ve + v2 + v1;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + ve + v2 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x4c:
-    Vi = (((Vhp) * f.filterGain) >> 12) + ve + v3;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + ve + v3;
     offset = mixer_offset<3>::value;
     break;
   case 0x4d:
-    Vi = (((Vhp) * f.filterGain) >> 12) + ve + v3 + v1;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x4e:
-    Vi = (((Vhp) * f.filterGain) >> 12) + ve + v3 + v2;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2;
     offset = mixer_offset<4>::value;
     break;
   case 0x4f:
-    Vi = (((Vhp) * f.filterGain) >> 12) + ve + v3 + v2 + v1;
+    Vi = ((((Vhp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x50:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12);
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12);
     offset = mixer_offset<2>::value;
     break;
   case 0x51:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + v1;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x52:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + v2;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + v2;
     offset = mixer_offset<3>::value;
     break;
   case 0x53:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + v2 + v1;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + v2 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x54:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + v3;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3;
     offset = mixer_offset<3>::value;
     break;
   case 0x55:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + v3 + v1;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x56:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + v3 + v2;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v2;
     offset = mixer_offset<4>::value;
     break;
   case 0x57:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + v3 + v2 + v1;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v2 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x58:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + ve;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve;
     offset = mixer_offset<3>::value;
     break;
   case 0x59:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + ve + v1;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x5a:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + ve + v2;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v2;
     offset = mixer_offset<4>::value;
     break;
   case 0x5b:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + ve + v2 + v1;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v2 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x5c:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + ve + v3;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3;
     offset = mixer_offset<4>::value;
     break;
   case 0x5d:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + ve + v3 + v1;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x5e:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + ve + v3 + v2;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2;
     offset = mixer_offset<5>::value;
     break;
   case 0x5f:
-    Vi = (((Vhp + Vlp) * f.filterGain) >> 12) + ve + v3 + v2 + v1;
+    Vi = ((((Vhp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2 + v1;
     offset = mixer_offset<6>::value;
     break;
   case 0x60:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12);
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12);
     offset = mixer_offset<2>::value;
     break;
   case 0x61:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + v1;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + v1;
     offset = mixer_offset<3>::value;
     break;
   case 0x62:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + v2;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + v2;
     offset = mixer_offset<3>::value;
     break;
   case 0x63:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + v2 + v1;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + v2 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x64:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + v3;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + v3;
     offset = mixer_offset<3>::value;
     break;
   case 0x65:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + v3 + v1;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + v3 + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x66:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + v3 + v2;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + v3 + v2;
     offset = mixer_offset<4>::value;
     break;
   case 0x67:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + v3 + v2 + v1;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + v3 + v2 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x68:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + ve;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + ve;
     offset = mixer_offset<3>::value;
     break;
   case 0x69:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + ve + v1;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x6a:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + ve + v2;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v2;
     offset = mixer_offset<4>::value;
     break;
   case 0x6b:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + ve + v2 + v1;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v2 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x6c:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + ve + v3;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v3;
     offset = mixer_offset<4>::value;
     break;
   case 0x6d:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + ve + v3 + v1;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x6e:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + ve + v3 + v2;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2;
     offset = mixer_offset<5>::value;
     break;
   case 0x6f:
-    Vi = (((Vhp + Vbp) * f.filterGain) >> 12) + ve + v3 + v2 + v1;
+    Vi = ((((Vhp + Vbp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2 + v1;
     offset = mixer_offset<6>::value;
     break;
   case 0x70:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12);
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12);
     offset = mixer_offset<3>::value;
     break;
   case 0x71:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + v1;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v1;
     offset = mixer_offset<4>::value;
     break;
   case 0x72:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + v2;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v2;
     offset = mixer_offset<4>::value;
     break;
   case 0x73:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + v2 + v1;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v2 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x74:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + v3;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3;
     offset = mixer_offset<4>::value;
     break;
   case 0x75:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + v3 + v1;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x76:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + v3 + v2;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v2;
     offset = mixer_offset<5>::value;
     break;
   case 0x77:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + v3 + v2 + v1;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + v3 + v2 + v1;
     offset = mixer_offset<6>::value;
     break;
   case 0x78:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + ve;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve;
     offset = mixer_offset<4>::value;
     break;
   case 0x79:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + ve + v1;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v1;
     offset = mixer_offset<5>::value;
     break;
   case 0x7a:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + ve + v2;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v2;
     offset = mixer_offset<5>::value;
     break;
   case 0x7b:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + ve + v2 + v1;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v2 + v1;
     offset = mixer_offset<6>::value;
     break;
   case 0x7c:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + ve + v3;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3;
     offset = mixer_offset<5>::value;
     break;
   case 0x7d:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + ve + v3 + v1;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v1;
     offset = mixer_offset<6>::value;
     break;
   case 0x7e:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + ve + v3 + v2;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2;
     offset = mixer_offset<6>::value;
     break;
   case 0x7f:
-    Vi = (((Vhp + Vbp + Vlp) * f.filterGain) >> 12) + ve + v3 + v2 + v1;
+    Vi = ((((Vhp + Vbp + Vlp) * f.filterGain) + dc_offset) >> 12) + ve + v3 + v2 + v1;
     offset = mixer_offset<7>::value;
     break;
   }

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Revision: 45733
          http://sourceforge.net/p/vice-emu/code/45733
Author:   gpz
Date:     2025-08-09 16:54:29 +0000 (Sat, 09 Aug 2025)
Log Message:
-----------
fix some more FIXMEs, image saving and flushing should work now

Modified Paths:
--------------
    trunk/vice/src/vic20/cart/minimon.c
    trunk/vice/src/vic20/cart/vic20cart.c

Modified: trunk/vice/src/vic20/cart/minimon.c
===================================================================
--- trunk/vice/src/vic20/cart/minimon.c	2025-08-08 16:05:33 UTC (rev 45732)
+++ trunk/vice/src/vic20/cart/minimon.c	2025-08-09 16:54:29 UTC (rev 45733)
@@ -108,6 +108,9 @@
 
 static int minimon_io23_temp = 0;
 
+static int set_minimon_enabled(int value, void *param);
+static int minimon_rom_reload(char *filename);
+
 /* ------------------------------------------------------------------------- */
 
 static int freeze_triggered = 0; /* if not 0, a "freeze reset" was just triggered */
@@ -179,8 +182,6 @@
 
 /* ------------------------------------------------------------------------- */
 
-static int minimon_rom_reload(char *filename);
-
 /* FIXME: this still needs to be tweaked to match the hardware */
 static RAMINITPARAM ramparam = {
     .start_value = 255,
@@ -457,11 +458,18 @@
 /* set the MinimonFilename resource */
 static int set_minimon_image_filename(const char *name, void *param)
 {
-    DBG(("set_minimon_image_filename '%s'", name));
-    if (minimon_image_filename != NULL && name != NULL && strcmp(name, minimon_image_filename) == 0) {
+    int enabled = minimon_enabled;
+
+    DBG(("set_minimon_image_filename '%s' (enabled: %d)", name, enabled));
+
+    /* if filename was already set, but not changed, return */
+    if ((minimon_image_filename != NULL) &&
+        (name != NULL) &&
+        (strcmp(name, minimon_image_filename) == 0)) {
         return 0;
     }
 
+    /* if filename is valid, check if a file with that name exists */
     if ((name != NULL) && (*name != '\0')) {
         if (util_check_filename_access(name) < 0) {
             return -1;
@@ -469,17 +477,14 @@
     }
 
     DBG(("set_minimon_image_filename"));
-    if (minimon_enabled) {
-        minimon_flush_image();
-        util_string_set(&minimon_image_filename, name);
-    } else {
-        util_string_set(&minimon_image_filename, name);
-    }
 
-    /* FIXME: load new image */
-    log_warning(LOG_DEFAULT, "FIXME: load minimon image on resource change");
+    /* if already enabled, flush image and disable */
+    set_minimon_enabled(0, (void*)1);
 
-    return 0;
+    util_string_set(&minimon_image_filename, name);
+
+    /* enable, load new image */
+    return set_minimon_enabled(enabled, (void*)1);
 }
 
 /* get the MinimonEnabled resource */
@@ -488,7 +493,6 @@
     return minimon_enabled;
 }
 
-
 static int minimon_activate(void)
 {
     minimon_bios_changed = 0;
@@ -500,7 +504,11 @@
 {
     int ret;
 
+    DBG(("minimon_deactivate: minimon_bios_changed: %d minimon_bios_write: %d",
+         minimon_bios_changed, minimon_bios_write));
+
     if (minimon_bios_changed && minimon_bios_write) {
+        DBG(("minimon_deactivate: flushing image"));
         if (minimon_bios_type == CARTRIDGE_FILETYPE_CRT) {
             ret = minimon_crt_save(minimon_image_filename);
         } else {
@@ -507,6 +515,7 @@
             ret = minimon_bin_save(minimon_image_filename);
         }
         if (ret <= 0) {
+            DBG(("minimon_deactivate: flush failed"));
             return 0; /* FIXME */
         }
     }
@@ -793,7 +802,6 @@
 
 int minimon_bin_save(const char *filename)
 {
-    /* FIXME */
     FILE *fd;
     size_t ret;
 
@@ -818,12 +826,11 @@
         return -1;
     }
     minimon_bios_changed = 0;
-    return -1;
+    return 0;
 }
 
 int minimon_crt_save(const char *filename)
 {
-    /* FIXME */
     FILE *fd;
     crt_chip_header_t chip;
 
@@ -850,29 +857,25 @@
     }
 
     fclose(fd);
-    return -1;
+    return 0;
 }
 
 int minimon_flush_image(void)
 {
-    /* FIXME */
-    int ret = -1;
-
+    int ret = 0;
+    DBG(("minimon_flush_image minimon_bios_changed:%d minimon_bios_write:%d",
+         minimon_bios_changed, minimon_bios_write));
     if (minimon_bios_type == CARTRIDGE_FILETYPE_NONE) {
         log_warning(LOG_DEFAULT, "Flush: no minimon image attached");
-        return 0;
-    }
-    if (minimon_bios_changed && minimon_bios_write) {
+    } else if (minimon_bios_changed && minimon_bios_write) {
         if (minimon_bios_type == CARTRIDGE_FILETYPE_CRT) {
             ret = minimon_crt_save(minimon_image_filename);
         } else {
             ret = minimon_bin_save(minimon_image_filename);
         }
-        if (ret <= 0) {
-            return 0; /* FIXME */
-        }
     }
     minimon_bios_changed = 0;
+    DBG(("minimon_flush_image ret: %d", ret));
     return ret;
 }
 

Modified: trunk/vice/src/vic20/cart/vic20cart.c
===================================================================
--- trunk/vice/src/vic20/cart/vic20cart.c	2025-08-08 16:05:33 UTC (rev 45732)
+++ trunk/vice/src/vic20/cart/vic20cart.c	2025-08-09 16:54:29 UTC (rev 45733)
@@ -1203,12 +1203,16 @@
 {
     const char *p;
     if (!cartridge_type_enabled(crtid)) {
+        DBG(("cartridge_can_flush_image crtid:%d ret: 0", crtid));
         return 0;
     }
     p = cartridge_get_filename_by_crtid(crtid);
     if ((p == NULL) || (*p == '\x0')) {
+        DBG(("cartridge_can_flush_image crtid:%d ret: 0", crtid));
         return 0;
     }
+
+    DBG(("cartridge_can_flush_image crtid:%d ret: 1", crtid));
     return 1;
 }
 
@@ -1229,8 +1233,10 @@
 int cartridge_can_save_image(int crtid)
 {
     if (!cartridge_type_enabled(crtid)) {
+        DBG(("cartridge_can_save_image crtid:%d ret: 0", crtid));
         return 0;
     }
+    DBG(("cartridge_can_save_image crtid:%d ret: 1", crtid));
     return 1;
 }
 

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Revision: 45732
          http://sourceforge.net/p/vice-emu/code/45732
Author:   gpz
Date:     2025-08-08 16:05:33 +0000 (Fri, 08 Aug 2025)
Log Message:
-----------
fix enabling minimon via resource, should fix #2152

Modified Paths:
--------------
    trunk/vice/src/vic20/cart/minimon.c
    trunk/vice/src/vic20/cart/vic20cart.c
    trunk/vice/src/vic20/cart/vic20cartmem.c

Modified: trunk/vice/src/vic20/cart/minimon.c
===================================================================
--- trunk/vice/src/vic20/cart/minimon.c	2025-08-07 22:10:20 UTC (rev 45731)
+++ trunk/vice/src/vic20/cart/minimon.c	2025-08-08 16:05:33 UTC (rev 45732)
@@ -488,47 +488,93 @@
     return minimon_enabled;
 }
 
+
+static int minimon_activate(void)
+{
+    minimon_bios_changed = 0;
+    /* minimon_reset(); */
+    return 0;
+}
+
+static int minimon_deactivate(void)
+{
+    int ret;
+
+    if (minimon_bios_changed && minimon_bios_write) {
+        if (minimon_bios_type == CARTRIDGE_FILETYPE_CRT) {
+            ret = minimon_crt_save(minimon_image_filename);
+        } else {
+            ret = minimon_bin_save(minimon_image_filename);
+        }
+        if (ret <= 0) {
+            return 0; /* FIXME */
+        }
+    }
+    return 0;
+}
+
 /* setup the MinimonEnabled resource */
 static int set_minimon_enabled(int value, void *param)
 {
     int val = value ? 1 : 0;
 
-    if (minimon_enabled == val) {
-        DBG(("set_minimon_enabled: %d to %d (nothing to do)", minimon_enabled, val));
-        return 0; /* nothing to do */
-    }
-
-    DBG(("set_minimon_enabled: %d to %d", minimon_enabled, val));
-    if (val) {
-
-        /* prepare the RAM/ROM */
-        if (minimon_rom) {
-            clear_ram();
+    DBG(("Minimon: set_enabled: '%s' %d to %d", minimon_image_filename, minimon_enabled, val));
+    if (!minimon_enabled && val) {
+        /* activate minimon */
+        if (param) {
+            /* if the param is != NULL, then we should load the default image file */
+            DBG(("Minimon: set_enabled(1) '%s'", minimon_image_filename));
             if (minimon_image_filename) {
-                minimon_rom_reload(minimon_image_filename);
+                if (*minimon_image_filename) {
+                    /* try .crt first */
+                    if ((cartridge_attach_image(CARTRIDGE_CRT, minimon_image_filename) < 0) &&
+                        (cartridge_attach_image(CARTRIDGE_VIC20_MINIMON, minimon_image_filename) < 0)) {
+                        DBG(("Minimon: set_enabled(1) did not register"));
+                        return -1;
+                    }
+                    /* minimon_enabled = 1; */ /* cartridge_attach_image will end up calling set_minimon_enabled again */
+                    return 0;
+                }
             }
+        } else {
+            DBG(("Minimon: set_enabled(0) '%s'", minimon_image_filename));
+            /* cart_power_off(); */
+            /* if the param is == NULL, then we should actually set the resource */
+            if (export_add(&export_res23) < 0) {
+                DBG(("Minimon: set_enabled(0) did not register"));
+                return -1;
+            } else {
+                DBG(("Minimon: set_enabled registered"));
+
+                if (minimon_activate() < 0) {
+                    return -1;
+                }
+                minimon_enabled = 1;
+                minimon_io2_list_item = io_source_register(&minimon_io2_device);
+                minimon_io3_list_item = io_source_register(&minimon_io3_device);
+                minimon_reset();
+                minimon_alarm_install();
+            }
         }
-
-        /* enable cartridge */
-        if (export_add(&export_res23) < 0) {
+    } else if (minimon_enabled && !val) {
+        /* remove minimon */
+        if (minimon_deactivate() < 0) {
             return -1;
         }
-        if (minimon_io_enabled) {
-            io_register();
-        }
-        /* FIXME: minimon_reload_file(); */
-        minimon_alarm_install();
-    } else {
-        /* disable cartridge */
-        io_unregister();
         minimon_alarm_deinstall();
+        /* cart_power_off(); */
         export_remove(&export_res23);
+        minimon_enabled = 0;
+        io_source_unregister(minimon_io2_list_item);
+        io_source_unregister(minimon_io3_list_item);
+        minimon_io2_list_item = NULL;
+        minimon_io3_list_item = NULL;
     }
-    minimon_enabled = val; /* resource */
-
+    DBG(("Minimon: set_enabled done: '%s' %d : %d", minimon_image_filename, val, minimon_enabled));
     return 0;
 }
 
+
 /* set the resource for the PGM switch */
 static int set_minimon_pgm_enabled(int value, void *param)
 {

Modified: trunk/vice/src/vic20/cart/vic20cart.c
===================================================================
--- trunk/vice/src/vic20/cart/vic20cart.c	2025-08-07 22:10:20 UTC (rev 45731)
+++ trunk/vice/src/vic20/cart/vic20cart.c	2025-08-08 16:05:33 UTC (rev 45732)
@@ -762,14 +762,10 @@
            cart currently is in the "Main Slot" */
         oldmain = cart_getid_slotmain();
         if (oldmain != CARTRIDGE_NONE) {
-            DBG(("CART: detach slot main ID: %d\n", oldmain));
+            DBG(("CART: detach slot main ID: %d", oldmain));
             cartridge_detach_image(oldmain);
         }
     }
-    if (oldmain != carttype) {
-        DBG(("CART: detach %s ID: %d\n", slotmain ? "slot main" : "other slot", carttype));
-        cartridge_detach_image(carttype);
-    }
 #endif
     switch (carttype) {
         case CARTRIDGE_VIC20_DETECT:
@@ -914,6 +910,7 @@
 
 void cartridge_detach_image(int type)
 {
+    DBG(("CART: cartridge_detach_image vic20cart_type:%d type:%d", vic20cart_type, type));
     cartridge_detach(vic20cart_type);
     vic20cart_type = CARTRIDGE_NONE;
     cartridge_is_from_snapshot = 0;

Modified: trunk/vice/src/vic20/cart/vic20cartmem.c
===================================================================
--- trunk/vice/src/vic20/cart/vic20cartmem.c	2025-08-07 22:10:20 UTC (rev 45731)
+++ trunk/vice/src/vic20/cart/vic20cartmem.c	2025-08-08 16:05:33 UTC (rev 45732)
@@ -387,7 +387,7 @@
 {
     int res = CART_READ_THROUGH;
     uint8_t value;
-    DBG(("cartridge_read_blk5 (%d) 0x%04x", mem_cartridge_type, addr));
+    /* DBG(("cartridge_read_blk5 (%d) 0x%04x", mem_cartridge_type, addr)); */
 
     /* "Slot 0" */
 
@@ -398,7 +398,7 @@
         }
         /* open bus value, in case no cartridge is attached to pass through */
         vic20_cpu_last_data = (addr >> 8);
-        printf("cartridge_read_blk5 %02x %04x\n", vic20_cpu_last_data, addr);
+        /* DBG(("cartridge_read_blk5 %02x %04x", vic20_cpu_last_data, addr)); */
     }
 
     /* main slot */

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Revision: 45731
          http://sourceforge.net/p/vice-emu/code/45731
Author:   gpz
Date:     2025-08-07 22:10:20 +0000 (Thu, 07 Aug 2025)
Log Message:
-----------
on vic20 the error is significantly worse when display dma is going on. still very much not accurrate emulation, but still better than nothing

Modified Paths:
--------------
    trunk/vice/src/vic20/vic-mem.c

Modified: trunk/vice/src/vic20/vic-mem.c
===================================================================
--- trunk/vice/src/vic20/vic-mem.c	2025-08-07 20:11:48 UTC (rev 45730)
+++ trunk/vice/src/vic20/vic-mem.c	2025-08-07 22:10:20 UTC (rev 45731)
@@ -288,13 +288,19 @@
 
 /* Add some randomness to the pot value(s). Note that _with paddles_ the error
    gets gradually worse depending on the sampled value (the larger the value,
-   the bigger error. This does _not_ happen with the 1351 mouse */
+   the bigger error. This does _not_ happen with the 1351 mouse.
+   Additionally the amount of error appears to depend on display DMA.
+*/
 static inline uint8_t makepotval(int value)
 {
     unsigned int fuzz;
 
     if (get_joyport_pot_type() == JOYPORT_POT_TYPE_ANALOG) {
-        fuzz = lib_unsigned_rand(0, (value * 5) / 255);
+        if (vic.area == VIC_AREA_DISPLAY) {
+            fuzz = lib_unsigned_rand(0, 1 + ((value * 25) / 255));
+        } else {
+            fuzz = lib_unsigned_rand(0, 1 + ((value * 5) / 255));
+        }
     } else {
         fuzz = lib_unsigned_rand(0, 1);
     }

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Revision: 45730
          http://sourceforge.net/p/vice-emu/code/45730
Author:   gpz
Date:     2025-08-07 20:11:48 +0000 (Thu, 07 Aug 2025)
Log Message:
-----------
also produce a prg that disables IRQ, for quick cross checking

Modified Paths:
--------------
    testprogs/SID/paddlescope/Makefile
    testprogs/SID/paddlescope/plotter.asm
    testprogs/SID/paddlescope/plotter.prg

Added Paths:
-----------
    testprogs/SID/paddlescope/plotter-sei.prg

Modified: testprogs/SID/paddlescope/Makefile
===================================================================
--- testprogs/SID/paddlescope/Makefile	2025-08-07 20:10:05 UTC (rev 45729)
+++ testprogs/SID/paddlescope/Makefile	2025-08-07 20:11:48 UTC (rev 45730)
@@ -1,8 +1,11 @@
 
-all: plotter.prg
+all: plotter.prg plotter-sei.prg
 
 plotter.prg: plotter.asm
-	acme --cpu 6510 -f cbm -o plotter.prg plotter.asm
+	acme -DIRQ=1 --cpu 6510 -f cbm -o plotter.prg plotter.asm
+plotter-sei.prg: plotter.asm
+	acme -DIRQ=0 --cpu 6510 -f cbm -o plotter-sei.prg plotter.asm
 
 clean:
 	$(RM) plotter.prg
+	$(RM) plotter-sei.prg

Added: testprogs/SID/paddlescope/plotter-sei.prg
===================================================================
(Binary files differ)

Index: testprogs/SID/paddlescope/plotter-sei.prg
===================================================================
--- testprogs/SID/paddlescope/plotter-sei.prg	2025-08-07 20:10:05 UTC (rev 45729)
+++ testprogs/SID/paddlescope/plotter-sei.prg	2025-08-07 20:11:48 UTC (rev 45730)

Property changes on: testprogs/SID/paddlescope/plotter-sei.prg
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/x-commodore-exec
\ No newline at end of property
Modified: testprogs/SID/paddlescope/plotter.asm
===================================================================
--- testprogs/SID/paddlescope/plotter.asm	2025-08-07 20:10:05 UTC (rev 45729)
+++ testprogs/SID/paddlescope/plotter.asm	2025-08-07 20:11:48 UTC (rev 45730)
@@ -12,6 +12,9 @@
         !byte $32,$30,$36,$34
         *= $0810
 
+!if IRQ=0 {
+        sei
+}
         lda #0
         sta $d020
         sta $d021

Modified: testprogs/SID/paddlescope/plotter.prg
===================================================================
(Binary files differ)

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Revision: 45729
          http://sourceforge.net/p/vice-emu/code/45729
Author:   gpz
Date:     2025-08-07 20:10:05 +0000 (Thu, 07 Aug 2025)
Log Message:
-----------
naive model of how the POT values glitch when reading them in the first (incomplete) sample period after switching the control ports, should fix #2159

Modified Paths:
--------------
    trunk/vice/src/joyport/joyport.c
    trunk/vice/src/joyport/joyport.h
    trunk/vice/src/sid/sid.c

Modified: trunk/vice/src/joyport/joyport.c
===================================================================
--- trunk/vice/src/joyport/joyport.c	2025-08-07 13:23:07 UTC (rev 45728)
+++ trunk/vice/src/joyport/joyport.c	2025-08-07 20:10:05 UTC (rev 45729)
@@ -45,6 +45,7 @@
 #include "lightpen.h"
 #include "log.h"
 #include "machine.h"
+#include "maincpu.h"
 #include "mouse_1351.h"
 #include "mouse_neos.h"
 #include "mouse_paddle.h"
@@ -82,6 +83,7 @@
 static int joy_port[JOYPORT_MAX_PORTS];
 static joyport_port_props_t port_props[JOYPORT_MAX_PORTS];
 static int pot_port_mask = 1;
+static CLOCK pot_port_mask_clk = 0; /* time when the mask changed */
 
 static uint8_t joyport_dig_stored[JOYPORT_MAX_PORTS];
 
@@ -119,9 +121,17 @@
 /* setup which port(s) are selected, ie the upper 2 bits of $dc00 on C64 */
 void set_joyport_pot_mask(int mask)
 {
+    if (pot_port_mask != mask) {
+        pot_port_mask_clk = maincpu_clk;
+    }
     pot_port_mask = mask;
 }
 
+CLOCK get_joyport_pot_mask_clk(void)
+{
+    return pot_port_mask_clk;
+}
+
 static int joyport_device_is_single_port(int id)
 {
     switch (id) {

Modified: trunk/vice/src/joyport/joyport.h
===================================================================
--- trunk/vice/src/joyport/joyport.h	2025-08-07 13:23:07 UTC (rev 45728)
+++ trunk/vice/src/joyport/joyport.h	2025-08-07 20:10:05 UTC (rev 45729)
@@ -340,6 +340,7 @@
 uint8_t read_joyport_poty(void);
 
 void set_joyport_pot_mask(int mask);
+CLOCK get_joyport_pot_mask_clk(void); /* get time since last port switch */
 
 #define JOYPORT_POT_TYPE_ANALOG     0   /* regular resistor */
 #define JOYPORT_POT_TYPE_DIGITAL    1   /* digital (1351 style) */

Modified: trunk/vice/src/sid/sid.c
===================================================================
--- trunk/vice/src/sid/sid.c	2025-08-07 13:23:07 UTC (rev 45728)
+++ trunk/vice/src/sid/sid.c	2025-08-07 20:10:05 UTC (rev 45729)
@@ -192,6 +192,25 @@
     return value;
 }
 
+/* this creates a "glitched" value that might be read in the first incomplete
+   sample period after switching the control port */
+static inline uint8_t makebadpotval(int value, int clkdiff)
+{
+    unsigned int fuzz;
+
+    if (get_joyport_pot_type() == JOYPORT_POT_TYPE_ANALOG) {
+        fuzz = lib_unsigned_rand(0, (clkdiff * 32) / 255);
+    } else {
+        fuzz = lib_unsigned_rand(0, 255);
+    }
+
+    value += fuzz;
+    if (value > 255) {
+        return 255;
+    }
+    return value;
+}
+
 static uint8_t sid_read_chip(uint16_t addr, int chipno)
 {
     int val = -1;
@@ -203,15 +222,26 @@
 #ifdef HAVE_MOUSE
     if (chipno == 0 && (addr == 0x19 || addr == 0x1a)) {
 #if 1
-        if ((maincpu_clk ^ pot_cycle) & ~511) {
-            pot_cycle = maincpu_clk & ~511; /* simplistic 512 cycle sampling */
+        CLOCK port_changed_clk = get_joyport_pot_mask_clk();
+        CLOCK port_changed_diff_clk = maincpu_clk - port_changed_clk;
+        if (port_changed_diff_clk > 511) {
+            /* produce a regular value */
+            if ((maincpu_clk ^ pot_cycle) & ~511) {
+                pot_cycle = maincpu_clk & ~511; /* simplistic 512 cycle sampling */
 
-            if (_mouse_enabled) {
-                mouse_poll();
+                if (_mouse_enabled) {
+                    mouse_poll();
+                }
+
+                val_pot_x = makepotval(read_joyport_potx());
+                val_pot_y = makepotval(read_joyport_poty());
             }
-
-            val_pot_x = makepotval(read_joyport_potx());
-            val_pot_y = makepotval(read_joyport_poty());
+        } else {
+            /* produce a "bad" value in case the POT register was read within
+               the first sample period after switching the port */
+            pot_cycle = port_changed_clk & ~511;
+            val_pot_x = makebadpotval(read_joyport_potx(), 512 - (int)port_changed_diff_clk);
+            val_pot_y = makebadpotval(read_joyport_poty(), 512 - (int)port_changed_diff_clk);
         }
 #endif
         val = (addr == 0x19) ? val_pot_x : val_pot_y;

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Revision: 45728
          http://sourceforge.net/p/vice-emu/code/45728
Author:   gpz
Date:     2025-08-07 13:23:07 +0000 (Thu, 07 Aug 2025)
Log Message:
-----------
small optimization

Modified Paths:
--------------
    testprogs/SID/paddlescope/plotter.asm
    testprogs/SID/paddlescope/plotter.prg

Modified: testprogs/SID/paddlescope/plotter.asm
===================================================================
--- testprogs/SID/paddlescope/plotter.asm	2025-08-06 22:38:25 UTC (rev 45727)
+++ testprogs/SID/paddlescope/plotter.asm	2025-08-07 13:23:07 UTC (rev 45728)
@@ -95,14 +95,6 @@
         lda bitmaplo,x
         sta lineaddr+0
 
-        clc
-        lda lineaddr+0
-        adc #<(20*8)
-        sta lineaddr2+0
-        lda lineaddr+1
-        adc #>(20*8)
-        sta lineaddr2+1
-
         ; clear the line
         ldx #0
 -
@@ -109,13 +101,7 @@
         lda #0
 lineaddr=*+1
         sta bitmap + (0 * 8),x
-lineaddr2=*+1
-        sta bitmap + (20 * 8),x
-;         txa
-;         clc
-;         adc #8
-;         tax
-;         cpx #(20*8)
+
         lda add8,x
         tax
         bne -
@@ -165,7 +151,7 @@
     !byte %00000010
     !byte %00000001
     }
-    
+
 !align 255,0
 
 bitmaphi:
@@ -182,9 +168,6 @@
 
 !align 255,0
 add8:
-    !for n, 0, 151 {
+    !for n, 0, 255 {
     !byte <(n+8)
     }
-    !for n, 152, 255 {
-    !byte 0
-    }

Modified: testprogs/SID/paddlescope/plotter.prg
===================================================================
(Binary files differ)

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Revision: 45727
          http://sourceforge.net/p/vice-emu/code/45727
Author:   gpz
Date:     2025-08-06 22:38:25 +0000 (Wed, 06 Aug 2025)
Log Message:
-----------
use different jitter depending on whether a 1351-style mouse or regular resistor is connected to POT input. Not really 100% correct, but should work for all practical purposes

Modified Paths:
--------------
    trunk/vice/src/joyport/joyport.c
    trunk/vice/src/joyport/joyport.h
    trunk/vice/src/sid/sid.c
    trunk/vice/src/vic20/vic-mem.c

Modified: trunk/vice/src/joyport/joyport.c
===================================================================
--- trunk/vice/src/joyport/joyport.c	2025-08-06 18:13:36 UTC (rev 45726)
+++ trunk/vice/src/joyport/joyport.c	2025-08-06 22:38:25 UTC (rev 45727)
@@ -116,6 +116,7 @@
     return retval;
 }
 
+/* setup which port(s) are selected, ie the upper 2 bits of $dc00 on C64 */
 void set_joyport_pot_mask(int mask)
 {
     pot_port_mask = mask;
@@ -312,6 +313,40 @@
     }
 }
 
+/* returns JOYPORT_POT_TYPE_DIGITAL if one of the selected POTs is a digital
+   (1351 style) device. we need this to correctly emulate the dither produced
+   when sampling the POTs */
+int get_joyport_pot_type(void)
+{
+    /* first find the pot ports if needed */
+    if (pot_port1 == -1 || pot_port2 == -1) {
+        find_pot_ports();
+    }
+
+    if (pot_port_mask == 1 || pot_port_mask == 3) {
+        if (pot_port1 != -2) {
+            switch (joy_port[pot_port1]) {
+                case JOYPORT_ID_MOUSE_1351:
+                case JOYPORT_ID_MOUSE_SMART:
+                case JOYPORT_ID_MOUSE_MICROMYS:
+                    return JOYPORT_POT_TYPE_DIGITAL;
+            }
+        }
+    }
+
+    if (pot_port_mask == 2 || pot_port_mask == 3) {
+        if (pot_port2 != -2) {
+            switch (joy_port[pot_port2]) {
+                case JOYPORT_ID_MOUSE_1351:
+                case JOYPORT_ID_MOUSE_SMART:
+                case JOYPORT_ID_MOUSE_MICROMYS:
+                    return JOYPORT_POT_TYPE_DIGITAL;
+            }
+        }
+    }
+    return JOYPORT_POT_TYPE_ANALOG;
+}
+
 /* calculate the paddle value that will show in the registers when both
    ports are selected at the same time */
 static uint8_t calc_parallel_paddle_value(uint8_t t1, uint8_t t2)

Modified: trunk/vice/src/joyport/joyport.h
===================================================================
--- trunk/vice/src/joyport/joyport.h	2025-08-06 18:13:36 UTC (rev 45726)
+++ trunk/vice/src/joyport/joyport.h	2025-08-06 22:38:25 UTC (rev 45727)
@@ -341,6 +341,10 @@
 
 void set_joyport_pot_mask(int mask);
 
+#define JOYPORT_POT_TYPE_ANALOG     0   /* regular resistor */
+#define JOYPORT_POT_TYPE_DIGITAL    1   /* digital (1351 style) */
+int get_joyport_pot_type(void);
+
 void joyport_powerup(void);
 
 int joyport_resources_init(void);

Modified: trunk/vice/src/sid/sid.c
===================================================================
--- trunk/vice/src/sid/sid.c	2025-08-06 18:13:36 UTC (rev 45726)
+++ trunk/vice/src/sid/sid.c	2025-08-06 22:38:25 UTC (rev 45727)
@@ -177,13 +177,14 @@
    the bigger error. This does _not_ happen with the 1351 mouse */
 static inline uint8_t makepotval(int value)
 {
-/* FIXME: we must somehow determine whether this is a 1531 or not, use the
-          lesser error for the time being */
-#if 0
-    unsigned int fuzz = lib_unsigned_rand(0, (value * 5) / 255);
-#else
-    unsigned int fuzz = lib_unsigned_rand(0, 1);
-#endif
+    unsigned int fuzz;
+
+    if (get_joyport_pot_type() == JOYPORT_POT_TYPE_ANALOG) {
+        fuzz = lib_unsigned_rand(0, (value * 5) / 255);
+    } else {
+        fuzz = lib_unsigned_rand(0, 1);
+    }
+
     value += fuzz;
     if (value > 255) {
         return 255;

Modified: trunk/vice/src/vic20/vic-mem.c
===================================================================
--- trunk/vice/src/vic20/vic-mem.c	2025-08-06 18:13:36 UTC (rev 45726)
+++ trunk/vice/src/vic20/vic-mem.c	2025-08-06 22:38:25 UTC (rev 45727)
@@ -291,13 +291,14 @@
    the bigger error. This does _not_ happen with the 1351 mouse */
 static inline uint8_t makepotval(int value)
 {
-/* FIXME: we must somehow determine whether this is a 1531 or not, use the
-          lesser error for the time being */
-#if 0
-    unsigned int fuzz = lib_unsigned_rand(0, (value * 5) / 255);
-#else
-    unsigned int fuzz = lib_unsigned_rand(0, 1);
-#endif
+    unsigned int fuzz;
+
+    if (get_joyport_pot_type() == JOYPORT_POT_TYPE_ANALOG) {
+        fuzz = lib_unsigned_rand(0, (value * 5) / 255);
+    } else {
+        fuzz = lib_unsigned_rand(0, 1);
+    }
+
     value += fuzz;
     if (value > 255) {
         return 255;

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Revision: 45726
          http://sourceforge.net/p/vice-emu/code/45726
Author:   gpz
Date:     2025-08-06 18:13:36 +0000 (Wed, 06 Aug 2025)
Log Message:
-----------
add some jitter to the lsb of the POT values, partial fix for #2159

Modified Paths:
--------------
    trunk/vice/src/sid/sid.c
    trunk/vice/src/vic20/vic-mem.c

Modified: trunk/vice/src/sid/sid.c
===================================================================
--- trunk/vice/src/sid/sid.c	2025-08-06 18:10:13 UTC (rev 45725)
+++ trunk/vice/src/sid/sid.c	2025-08-06 18:13:36 UTC (rev 45726)
@@ -172,6 +172,25 @@
 #endif
 /* ------------------------------------------------------------------------- */
 
+/* Add some randomness to the pot value(s). Note that _with paddles_ the error
+   gets gradually worse depending on the sampled value (the larger the value,
+   the bigger error. This does _not_ happen with the 1351 mouse */
+static inline uint8_t makepotval(int value)
+{
+/* FIXME: we must somehow determine whether this is a 1531 or not, use the
+          lesser error for the time being */
+#if 0
+    unsigned int fuzz = lib_unsigned_rand(0, (value * 5) / 255);
+#else
+    unsigned int fuzz = lib_unsigned_rand(0, 1);
+#endif
+    value += fuzz;
+    if (value > 255) {
+        return 255;
+    }
+    return value;
+}
+
 static uint8_t sid_read_chip(uint16_t addr, int chipno)
 {
     int val = -1;
@@ -190,8 +209,8 @@
                 mouse_poll();
             }
 
-            val_pot_x = read_joyport_potx();
-            val_pot_y = read_joyport_poty();
+            val_pot_x = makepotval(read_joyport_potx());
+            val_pot_y = makepotval(read_joyport_poty());
         }
 #endif
         val = (addr == 0x19) ? val_pot_x : val_pot_y;

Modified: trunk/vice/src/vic20/vic-mem.c
===================================================================
--- trunk/vice/src/vic20/vic-mem.c	2025-08-06 18:10:13 UTC (rev 45725)
+++ trunk/vice/src/vic20/vic-mem.c	2025-08-06 18:13:36 UTC (rev 45726)
@@ -33,6 +33,7 @@
 #include <string.h>
 
 #include "joyport.h"
+#include "lib.h"
 #include "maincpu.h"
 #include "raster-changes.h"
 #include "types.h"
@@ -285,6 +286,25 @@
     return ypos;
 }
 
+/* Add some randomness to the pot value(s). Note that _with paddles_ the error
+   gets gradually worse depending on the sampled value (the larger the value,
+   the bigger error. This does _not_ happen with the 1351 mouse */
+static inline uint8_t makepotval(int value)
+{
+/* FIXME: we must somehow determine whether this is a 1531 or not, use the
+          lesser error for the time being */
+#if 0
+    unsigned int fuzz = lib_unsigned_rand(0, (value * 5) / 255);
+#else
+    unsigned int fuzz = lib_unsigned_rand(0, 1);
+#endif
+    value += fuzz;
+    if (value > 255) {
+        return 255;
+    }
+    return value;
+}
+
 uint8_t vic_read(uint16_t addr)
 {
     addr &= 0xf;
@@ -298,8 +318,8 @@
                 mouse_poll();
             }
 
-            vic.regs[8] = read_joyport_potx();
-            vic.regs[9] = read_joyport_poty();
+            vic.regs[8] = makepotval(read_joyport_potx());
+            vic.regs[9] = makepotval(read_joyport_poty());
         }
     }
 #endif

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Revision: 45725
          http://sourceforge.net/p/vice-emu/code/45725
Author:   gpz
Date:     2025-08-06 18:10:13 +0000 (Wed, 06 Aug 2025)
Log Message:
-----------
add test prgram to show pot sample jitter/artefacts, related to bug #2159

Added Paths:
-----------
    testprogs/SID/paddlescope/
    testprogs/SID/paddlescope/Makefile
    testprogs/SID/paddlescope/plotter.asm
    testprogs/SID/paddlescope/plotter.prg
    testprogs/SID/paddlescope/readme.txt

Added: testprogs/SID/paddlescope/Makefile
===================================================================
--- testprogs/SID/paddlescope/Makefile	                        (rev 0)
+++ testprogs/SID/paddlescope/Makefile	2025-08-06 18:10:13 UTC (rev 45725)
@@ -0,0 +1,8 @@
+
+all: plotter.prg
+
+plotter.prg: plotter.asm
+	acme --cpu 6510 -f cbm -o plotter.prg plotter.asm
+
+clean:
+	$(RM) plotter.prg

Added: testprogs/SID/paddlescope/plotter.asm
===================================================================
--- testprogs/SID/paddlescope/plotter.asm	                        (rev 0)
+++ testprogs/SID/paddlescope/plotter.asm	2025-08-06 18:10:13 UTC (rev 45725)
@@ -0,0 +1,190 @@
+bitmap = $2000
+vram = $0400
+
+xposlo = $fa
+xposhi = $fb
+
+linecount = $02
+
+
+        *= $0801
+        !byte $0c,$08,$0b,$00,$9e
+        !byte $32,$30,$36,$34
+        *= $0810
+
+        lda #0
+        sta $d020
+        sta $d021
+
+        jsr initplot
+
+        jmp doplot
+
+initplot:
+        ldy #13
+--
+        ldx #0
+        lda #$1b
+-
+        lda clearline,x
+clearaddr=*+1
+        sta vram,x
+        lda clearline2,x
+clearaddr2=*+1
+        sta vram+40,x
+        inx
+        cpx #40
+        bne -
+
+        lda clearaddr
+        clc
+        adc #40*2
+        sta clearaddr
+        bcc +
+        inc clearaddr+1
++
+        lda clearaddr2
+        clc
+        adc #40*2
+        sta clearaddr2
+        bcc +
+        inc clearaddr2+1
++
+        dey
+        bne --
+    
+        lda #0
+        ldy #$20
+        ldx #0
+-
+bitmaphiaddr=*+2
+        sta bitmap,x
+        inx
+        bne -
+        inc bitmaphiaddr
+        dey
+        bne -
+
+        lda #$3b
+        sta $d011
+        lda #$18
+        sta $d018
+
+        lda #0
+        sta xposlo
+        sta xposhi
+
+        rts
+;-------------------------------------------------------------------------------
+
+
+paddlereg = $d419
+
+doplot:
+
+        ; get line address
+        ldx linecount
+        inx
+        cpx #(25*8)
+        bne +
+        ldx #0
++       stx linecount
+
+        lda bitmaphi,x
+        sta lineaddr+1
+        lda bitmaplo,x
+        sta lineaddr+0
+
+        clc
+        lda lineaddr+0
+        adc #<(20*8)
+        sta lineaddr2+0
+        lda lineaddr+1
+        adc #>(20*8)
+        sta lineaddr2+1
+
+        ; clear the line
+        ldx #0
+-
+        lda #0
+lineaddr=*+1
+        sta bitmap + (0 * 8),x
+lineaddr2=*+1
+        sta bitmap + (20 * 8),x
+;         txa
+;         clc
+;         adc #8
+;         tax
+;         cpx #(20*8)
+        lda add8,x
+        tax
+        bne -
+
+        ; plot the plot
+        lda paddlereg
+        tax
+        and #%11111000
+        clc
+        adc lineaddr+0
+        sta lineaddr3+0
+
+        lda #0
+        adc lineaddr+1
+        sta lineaddr3+1
+
+        lda bitmapbits,x
+
+lineaddr3=*+1
+        sta bitmap + (0 * 8)
+
+        jmp doplot
+
+;-------------------------------------------------------------------------------
+
+clearline:
+    !byte $10,$1b,$10,$1b,$16,$1e,$16,$1e,$16,$1e
+    !byte $16,$0d,$05,$0d,$05,$0d,$05,$0d,$05,$0d
+    !byte $05,$0d,$05,$0d,$05,$0d,$05,$0d,$05,$1e
+    !byte $16,$1e,$16,$1e,$16,$1e,$10,$1b,$10,$1b
+clearline2:
+    !byte $1b,$10,$1b,$10,$1e,$16,$1e,$16,$1e,$16
+    !byte $1e,$05,$0d,$05,$0d,$05,$0d,$05,$0d,$05
+    !byte $0d,$05,$0d,$05,$0d,$05,$0d,$05,$0d,$16
+    !byte $1e,$16,$1e,$16,$1e,$16,$1b,$10,$1b,$10
+
+!align 255,0
+
+bitmapbits:
+    !for n, 0, 31 {
+    !byte %10000000
+    !byte %01000000
+    !byte %00100000
+    !byte %00010000
+    !byte %00001000
+    !byte %00000100
+    !byte %00000010
+    !byte %00000001
+    }
+    
+!align 255,0
+
+bitmaphi:
+    !for n, 0, 199 {
+        !byte >(bitmap+32+(((n / 8) * 320) + (n & 7)))
+    }
+
+!align 255,0
+
+bitmaplo:
+    !for n, 0, 199 {
+        !byte <(bitmap+32+(((n / 8) * 320) + (n & 7)))
+    }
+
+!align 255,0
+add8:
+    !for n, 0, 151 {
+    !byte <(n+8)
+    }
+    !for n, 152, 255 {
+    !byte 0
+    }

Added: testprogs/SID/paddlescope/plotter.prg
===================================================================
(Binary files differ)

Index: testprogs/SID/paddlescope/plotter.prg
===================================================================
--- testprogs/SID/paddlescope/plotter.prg	2025-08-03 20:10:04 UTC (rev 45724)
+++ testprogs/SID/paddlescope/plotter.prg	2025-08-06 18:10:13 UTC (rev 45725)

Property changes on: testprogs/SID/paddlescope/plotter.prg
___________________________________________________________________
Added: svn:mime-type
## -0,0 +1 ##
+application/x-commodore-exec
\ No newline at end of property
Added: testprogs/SID/paddlescope/readme.txt
===================================================================
--- testprogs/SID/paddlescope/readme.txt	                        (rev 0)
+++ testprogs/SID/paddlescope/readme.txt	2025-08-06 18:10:13 UTC (rev 45725)
@@ -0,0 +1,26 @@
+
+This program continuously samples the POT value from port 1 ($d419) and shows
+a scatter plot of the values.
+
+
+- Each Square is 8 pixel wide, ie 8 values
+
+- The blue area marks the full range, ie values 0-255
+
+- The green area (approximately) marks the range used by the 1351 mouse
+
+
+Observations:
+
+- When a paddle is connected, the value jitters gradually more with higher
+  values. Very low values have almost no jitter, very high values jitter around
+  6 values or so.
+
+- When a mouse is connected, the value is very precise over the full range,
+  only the LSB jitters.
+
+- With both regular paddles and the 1351 mouse, occasional semi-random (usually
+  much too large) values can be observed. This happens, because the program
+  does _not_ disable interrupts, and the keyboard scanner uses $dc00, which will
+  select the other joystick port for a short time, and mess up the sampling.
+

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Revision: 45724
          http://sourceforge.net/p/vice-emu/code/45724
Author:   gpz
Date:     2025-08-03 20:10:04 +0000 (Sun, 03 Aug 2025)
Log Message:
-----------
fix access of open bus when minimon is active, partial fix for #2152

Modified Paths:
--------------
    trunk/vice/src/vic20/cart/minimon.c
    trunk/vice/src/vic20/cart/vic20cartmem.c

Modified: trunk/vice/src/vic20/cart/minimon.c
===================================================================
--- trunk/vice/src/vic20/cart/minimon.c	2025-08-02 14:54:31 UTC (rev 45723)
+++ trunk/vice/src/vic20/cart/minimon.c	2025-08-03 20:10:04 UTC (rev 45724)
@@ -317,27 +317,37 @@
 
 static uint8_t minimon_io2_read(uint16_t addr)
 {
+    if (minimon_bios_type == CARTRIDGE_FILETYPE_NONE) {
+        return (0x9800 + (addr & 0x3ff)) >> 8; /* open bus */
+    }
     return minimon_rom[0x000 + (addr & 0x3ff)];
 }
 
 static uint8_t minimon_io3_read(uint16_t addr)
 {
+    if (minimon_bios_type == CARTRIDGE_FILETYPE_NONE) {
+        return (0x9a00 + (addr & 0x3ff)) >> 8; /* open bus */
+    }
     return minimon_rom[0x400 + (addr & 0x3ff)];
 }
 
 static void minimon_io2_write(uint16_t addr, uint8_t value)
 {
-    if (minimon_pgm_enabled) {
-        minimon_rom[0x000 + (addr & 0x3ff)] = value;
-        minimon_bios_changed = 1;
+    if (minimon_bios_type != CARTRIDGE_FILETYPE_NONE) {
+        if (minimon_pgm_enabled) {
+            minimon_rom[0x000 + (addr & 0x3ff)] = value;
+            minimon_bios_changed = 1;
+        }
     }
 }
 
 static void minimon_io3_write(uint16_t addr, uint8_t value)
 {
-    if (minimon_pgm_enabled) {
-        minimon_rom[0x400 + (addr & 0x3ff)] = value;
-        minimon_bios_changed = 1;
+    if (minimon_bios_type != CARTRIDGE_FILETYPE_NONE) {
+        if (minimon_pgm_enabled) {
+            minimon_rom[0x400 + (addr & 0x3ff)] = value;
+            minimon_bios_changed = 1;
+        }
     }
 }
 
@@ -467,6 +477,7 @@
     }
 
     /* FIXME: load new image */
+    log_warning(LOG_DEFAULT, "FIXME: load minimon image on resource change");
 
     return 0;
 }
@@ -800,6 +811,11 @@
 {
     /* FIXME */
     int ret = -1;
+
+    if (minimon_bios_type == CARTRIDGE_FILETYPE_NONE) {
+        log_warning(LOG_DEFAULT, "Flush: no minimon image attached");
+        return 0;
+    }
     if (minimon_bios_changed && minimon_bios_write) {
         if (minimon_bios_type == CARTRIDGE_FILETYPE_CRT) {
             ret = minimon_crt_save(minimon_image_filename);

Modified: trunk/vice/src/vic20/cart/vic20cartmem.c
===================================================================
--- trunk/vice/src/vic20/cart/vic20cartmem.c	2025-08-02 14:54:31 UTC (rev 45723)
+++ trunk/vice/src/vic20/cart/vic20cartmem.c	2025-08-03 20:10:04 UTC (rev 45724)
@@ -392,9 +392,13 @@
     /* "Slot 0" */
 
     if (minimon_cart_enabled()) {
+
         if ((res = minimon_blk5_read(addr, &value)) == CART_READ_VALID) {
             return value;
         }
+        /* open bus value, in case no cartridge is attached to pass through */
+        vic20_cpu_last_data = (addr >> 8);
+        printf("cartridge_read_blk5 %02x %04x\n", vic20_cpu_last_data, addr);
     }
 
     /* main slot */

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.

Revision: 45723
          http://sourceforge.net/p/vice-emu/code/45723
Author:   gpz
Date:     2025-08-02 14:54:31 +0000 (Sat, 02 Aug 2025)
Log Message:
-----------
use 16 bits for the cached sample value, should fix #2142

Modified Paths:
--------------
    trunk/vice/src/plus4/ted-sound.c

Modified: trunk/vice/src/plus4/ted-sound.c
===================================================================
--- trunk/vice/src/plus4/ted-sound.c	2025-08-01 23:38:39 UTC (rev 45722)
+++ trunk/vice/src/plus4/ted-sound.c	2025-08-02 14:54:31 UTC (rev 45723)
@@ -47,6 +47,10 @@
 /* #define DEBUG_TEDSOUND */
 
 #ifdef DEBUG_TEDSOUND
+#pragma GCC diagnostic warning "-O3"
+#pragma GCC diagnostic warning "-Wall"
+#pragma GCC diagnostic warning "-Wextra"
+#pragma GCC diagnostic ignored "-Wunused-parameter"
 #define DBG(x)     log_printf x
 #else
 #define DBG(x)
@@ -178,7 +182,7 @@
 
     uint8_t voice0_cached_output;
     uint8_t voice1_cached_output;
-    uint8_t digital_cached_output;
+    uint16_t digital_cached_output;
 
     uint32_t oscStep;
 

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.

Revision: 45722
          http://sourceforge.net/p/vice-emu/code/45722
Author:   gpz
Date:     2025-08-01 23:38:39 +0000 (Fri, 01 Aug 2025)
Log Message:
-----------
convert the DTV userport ps/2 mouse to a regular userport device, and make it work again. extra work is needed to make it generally work for all emulators

Modified Paths:
--------------
    trunk/vice/doc/vice.texi
    trunk/vice/src/Makefile.am
    trunk/vice/src/c64dtv/c64dtv-resources.c
    trunk/vice/src/c64dtv/c64dtv.c
    trunk/vice/src/c64dtv/c64dtvcia2.c
    trunk/vice/src/c64dtv/c64dtvmem.c
    trunk/vice/src/joyport/mouse.c
    trunk/vice/src/userport/Makefile.am
    trunk/vice/src/userport/userport.c
    trunk/vice/src/userport/userport.h

Added Paths:
-----------
    trunk/vice/src/userport/userport_ps2mouse.c
    trunk/vice/src/userport/userport_ps2mouse.h

Removed Paths:
-------------
    trunk/vice/src/ps2mouse.c
    trunk/vice/src/ps2mouse.h

Modified: trunk/vice/doc/vice.texi
===================================================================
--- trunk/vice/doc/vice.texi	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/doc/vice.texi	2025-08-01 23:38:39 UTC (rev 45722)
@@ -8750,6 +8750,9 @@
 @item 26
 @tab PET Userport diagnostic pin
 @tab xpet
+@item 27
+@tab Userport PS/2 Mouse
+@tab x64dtv
 @end multitable
 
 @table @code
@@ -14010,15 +14013,13 @@
 The C64DTV userport emulation currently supports three devices:
 Hummer ADC, userport joystick and PS/2 mouse.
 
-The joystick that controls either the Hummer ADC or userport joystick
-can be selected using the same parameter or menu option. (Enable "Hummer userport
-adapter" and use the first extra joystick.)
+The Hummer ADC will be always enabled when a "Hummer" model is selected.
 
 While using the Hummer ADC, joystick UP and DOWN are mapped to
 the Hummer buttons A and B respectively. LEFT and RIGHT set the ADCs
 output to 0 and 255. Centering the joystick results in the ADC value of 128.
 
-Currently the Hummer ADC and userport joystick are mutually exclusive.
+The Hummer ADC and userport joystick are mutually exclusive.
 This means that enabling one disables the other. PS/2 mouse emulation
 can be used simultaneously with either Hummer ADC or userport joystick.
 
@@ -14030,12 +14031,6 @@
 Enable/Disable Hummer ADC
 (@code{HummerADC=1}, @code{HummerADC=0}).
 
-@findex -ps2mouse, +ps2mouse
-@item -ps2mouse
-@itemx +ps2mouse
-Enable/disable PS/2 mouse on userport
-(@code{ps2mouse=1}, @code{ps2mouse=0}).
-
 @end table
 
 
@@ -14144,10 +14139,6 @@
 @item HummerADC
 Boolean to enable/disable the Hummer ADC emulation.
 
-@vindex ps2mouse
-@item ps2mouse
-Boolean to enable/disable PS/2 Mouse emulation.
-
 @vindex DtvBlitterLog
 @item DtvBlitterLog
 Boolean, enables Blitter logging.

Modified: trunk/vice/src/Makefile.am
===================================================================
--- trunk/vice/src/Makefile.am	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/Makefile.am	2025-08-01 23:38:39 UTC (rev 45722)
@@ -241,7 +241,6 @@
 	plus4ui.h \
 	profiler.h \
 	profiler_data.h \
-	ps2mouse.h \
 	r65c02.h \
 	ram.h \
 	rawfile.h \
@@ -345,10 +344,6 @@
 	zfile.c \
 	zipcode.c
 
-
-ps2mouse_sources = \
-	ps2mouse.c
-
 midi_sources = \
 	midi.c
 
@@ -854,7 +849,7 @@
 	$(hotkeys_lib) \
 	$(zmbv_lib)
 
-x64dtv_SOURCES = $(base_sources) $(ps2mouse_sources)
+x64dtv_SOURCES = $(base_sources)
 x64dtv_LDADD = $(x64dtv_libs) $(emu_extlibs) @TFE_LIBS@ @NETPLAY_LIBS@ $(X64DTV_RES)
 x64dtv_DEPENDENCIES = $(x64dtv_libs)
 if HAVE_DEBUG

Modified: trunk/vice/src/c64dtv/c64dtv-resources.c
===================================================================
--- trunk/vice/src/c64dtv/c64dtv-resources.c	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/c64dtv/c64dtv-resources.c	2025-08-01 23:38:39 UTC (rev 45722)
@@ -34,7 +34,7 @@
 #include "c64rom.h"
 #include "cartridge.h"
 #include "hummeradc.h"
-#include "ps2mouse.h"
+#include "userport_ps2mouse.h"
 #include "kbd.h"
 #include "keyboard.h"
 #include "lib.h"

Modified: trunk/vice/src/c64dtv/c64dtv.c
===================================================================
--- trunk/vice/src/c64dtv/c64dtv.c	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/c64dtv/c64dtv.c	2025-08-01 23:38:39 UTC (rev 45722)
@@ -88,7 +88,7 @@
 #include "parallel.h"
 #include "printer.h"
 #include "protopad.h"
-#include "ps2mouse.h"
+#include "userport_ps2mouse.h"
 #include "resources.h"
 #include "rushware_keypad.h"
 #include "sampler.h"

Modified: trunk/vice/src/c64dtv/c64dtvcia2.c
===================================================================
--- trunk/vice/src/c64dtv/c64dtvcia2.c	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/c64dtv/c64dtvcia2.c	2025-08-01 23:38:39 UTC (rev 45722)
@@ -48,7 +48,7 @@
 #include "lib.h"
 #include "log.h"
 #include "maincpu.h"
-#include "ps2mouse.h"
+#include "userport_ps2mouse.h"
 #include "types.h"
 #include "userport.h"
 #include "vicii.h"
@@ -56,18 +56,11 @@
 void cia2_store(uint16_t addr, uint8_t data)
 {
     if ((addr & 0x1f) == 1) {
-        /* HACK: for now only call the userport system when ps/2 mouse is disabled */
-        if (!ps2mouse_enabled) {
-            store_userport_pbx(data, USERPORT_NO_PULSE);
-        }
+        store_userport_pbx(data, USERPORT_NO_PULSE);
 
         if (c64dtv_hummer_adc_enabled) {
             hummeradc_store(data);
         }
-        /* FIXME: convert ps/2 mouse support to new userport system */
-        if (ps2mouse_enabled) {
-            ps2mouse_store(data);
-        }
     }
 
     ciacore_store(machine_context.cia2, addr, data);
@@ -78,15 +71,8 @@
     uint8_t retval = 0xff;
 
     if ((addr & 0x1f) == 1) {
-        /* HACK: for now only call the userport system when ps/2 mouse is disabled */
-        if (!ps2mouse_enabled) {
-            retval = read_userport_pbx(retval);
-        }
+        retval = read_userport_pbx(retval);
 
-        /* FIXME: convert ps/2 mouse support to new userport system */
-        if (ps2mouse_enabled) {
-            retval &= (ps2mouse_read() | 0x3f);
-        }
         if (c64dtv_hummer_adc_enabled) {
             retval &= (hummeradc_read() | 0xf8);
         }

Modified: trunk/vice/src/c64dtv/c64dtvmem.c
===================================================================
--- trunk/vice/src/c64dtv/c64dtvmem.c	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/c64dtv/c64dtvmem.c	2025-08-01 23:38:39 UTC (rev 45722)
@@ -49,7 +49,7 @@
 #include "interrupt.h"
 #include "alarm.h"
 #include "hummeradc.h"
-#include "ps2mouse.h"
+#include "userport_ps2mouse.h"
 
 /* TODO this is a hack */
 #define C64_RAM_SIZE 0x200000

Modified: trunk/vice/src/joyport/mouse.c
===================================================================
--- trunk/vice/src/joyport/mouse.c	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/joyport/mouse.c	2025-08-01 23:38:39 UTC (rev 45722)
@@ -51,6 +51,7 @@
 #include "archdep.h"
 #include "cmdline.h"
 #include "joyport.h"
+#include "log.h"
 #include "machine.h"
 #include "maincpu.h"
 #include "mouse.h"
@@ -145,6 +146,7 @@
 {
     *x = (int16_t)mouse_x;
     *y = (int16_t)mouse_y;
+    DBG(("mouse_get_raw_int16 %d, %d", *x, *y));
 }
 
 void mouse_get_last_int16(int16_t *x, int16_t *y)

Deleted: trunk/vice/src/ps2mouse.c
===================================================================
--- trunk/vice/src/ps2mouse.c	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/ps2mouse.c	2025-08-01 23:38:39 UTC (rev 45722)
@@ -1,554 +0,0 @@
-/*
- * ps2mouse.c -- PS/2 mouse on userport emulation
- *
- * Written by
- *  Hannu Nuotio <han...@tu...>
- * Based on code by
- *  Andreas Boose <vic...@t-...>
- *
- * This file is part of VICE, the Versatile Commodore Emulator.
- * See README for copyright notice.
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- *  02111-1307  USA.
- *
- */
-
-#include "vice.h"
-
-#include "cmdline.h"
-#include "resources.h"
-#include "log.h"
-#include "ps2mouse.h"
-#include "alarm.h"
-#include "maincpu.h"
-#include "mousedrv.h"
-
-static void mouse_button_left(int pressed);
-static void mouse_button_right(int pressed);
-static void mouse_button_middle(int pressed);
-static void mouse_button_up(int pressed);
-static void mouse_button_down(int pressed);
-
-static log_t ps2mouse_log = LOG_DEFAULT;
-
-#if 0
-#define PS2MOUSE_DEBUG(args ...) log_message(ps2mouse_log, args)
-#define PS2MOUSE_DEBUG_ENABLED
-#endif
-
-/* PS/2 mouse port bits */
-#define PS2_CLK_BIT 0x40
-#define PS2_DATA_BIT 0x80
-
-/* PS/2 mouse timing */
-#define PS2_BIT_DELAY_CLK 75
-
-/* PS/2 mouse commands & replies (TODO: support more commands) */
-#define PS2_REPLY_OK 0xfa
-#define PS2_REPLY_ERROR 0xfc
-#define PS2_CMD_SET_REMOTE_MODE 0xf0
-#define PS2_CMD_READ_DATA 0xeb
-#define PS2_CMD_GET_DEV_ID 0xf2
-#define PS2_REPLY_DEV_ID 0x00
-
-/* PS/2 mouse movement packet bits */
-#define PS2_MDATA_YO 0x80
-#define PS2_MDATA_XO 0x40
-#define PS2_MDATA_YS 0x20
-#define PS2_MDATA_XS 0x10
-#define PS2_MDATA_A1 0x08
-#define PS2_MDATA_MB 0x04
-#define PS2_MDATA_RB 0x02
-#define PS2_MDATA_LB 0x01
-
-/* PS/2 mouse variables */
-static uint8_t ps2mouse_value;
-static uint8_t ps2mouse_in;
-static uint8_t ps2mouse_out;
-static uint8_t ps2mouse_prev;
-static uint8_t ps2mouse_parity;
-static int16_t ps2mouse_lastx;
-static int16_t ps2mouse_lasty;
-static uint8_t ps2mouse_buttons;
-
-/* PS/2 transmission state */
-enum {
-    PS2_FROMTO_IDLE=0,
-    PS2_FROM_START, /* mouse <- cpu */
-    PS2_FROM_D0,
-    PS2_FROM_D1,
-    PS2_FROM_D2,
-    PS2_FROM_D3,
-    PS2_FROM_D4,
-    PS2_FROM_D5,
-    PS2_FROM_D6,
-    PS2_FROM_D7,
-    PS2_FROM_PARITY,
-    PS2_FROM_STOP,
-    PS2_FROM_ACK,
-    PS2_CHECK_SEND, /* mouse -> cpu */
-    PS2_TO_D0,
-    PS2_TO_D1,
-    PS2_TO_D2,
-    PS2_TO_D3,
-    PS2_TO_D4,
-    PS2_TO_D5,
-    PS2_TO_D6,
-    PS2_TO_D7,
-    PS2_TO_PARITY,
-    PS2_TO_STOP
-} ps2mouse_xmit_state = PS2_FROMTO_IDLE;
-
-/* Output buffer */
-#define PS2_QUEUE_SIZE 8
-uint8_t ps2mouse_queue[PS2_QUEUE_SIZE];
-uint8_t ps2mouse_queue_head;
-uint8_t ps2mouse_queue_tail;
-
-static int ps2mouse_queue_put(uint8_t value)
-{
-    uint8_t new_head = (ps2mouse_queue_head + 1) & (PS2_QUEUE_SIZE - 1);
-    if (new_head == ps2mouse_queue_tail) {
-#ifdef PS2MOUSE_DEBUG_ENABLED
-        PS2MOUSE_DEBUG("queue full!");
-#endif
-        return 0;
-    }
-    ps2mouse_queue[ps2mouse_queue_head] = value;
-    ps2mouse_queue_head = new_head;
-    return 1;
-}
-
-static int ps2mouse_queue_empty(void)
-{
-    return (ps2mouse_queue_head == ps2mouse_queue_tail);
-}
-
-static uint8_t ps2mouse_queue_get(void)
-{
-    uint8_t retval = ps2mouse_queue[ps2mouse_queue_tail];
-    ++ps2mouse_queue_tail;
-    ps2mouse_queue_tail &= (PS2_QUEUE_SIZE - 1);
-    return retval;
-}
-
-/* ------------------------------------------------------------------------- */
-
-
-static int ps2mouse_handle_command(uint8_t value)
-{
-    int16_t diff_x, diff_y, new_x, new_y;
-    uint8_t new_buttons;
-#ifdef PS2MOUSE_DEBUG_ENABLED
-    PS2MOUSE_DEBUG("cmd: got %02x", value);
-#endif
-    ps2mouse_xmit_state = PS2_CHECK_SEND;
-
-    if (ps2mouse_parity) {
-#ifdef PS2MOUSE_DEBUG_ENABLED
-        PS2MOUSE_DEBUG("parity error");
-#endif
-        return ps2mouse_queue_put(PS2_REPLY_ERROR);
-    }
-
-    switch (value) {
-        case PS2_CMD_GET_DEV_ID:
-            return (ps2mouse_queue_put(PS2_REPLY_OK)
-                    && ps2mouse_queue_put(PS2_REPLY_DEV_ID));
-            break;
-
-        case PS2_CMD_SET_REMOTE_MODE:
-#ifdef HAVE_MOUSE
-            mouse_get_raw_int16(&ps2mouse_lastx, &ps2mouse_lasty);
-#endif
-            return (ps2mouse_queue_put(PS2_REPLY_OK));
-            break;
-
-        case PS2_CMD_READ_DATA:
-            new_buttons = ps2mouse_buttons;
-#ifdef HAVE_MOUSE
-            mouse_get_raw_int16(&new_x, &new_y);
-            diff_x = (new_x - ps2mouse_lastx);
-            if (diff_x < 0) {
-                new_buttons |= PS2_MDATA_XS;
-            }
-            if (diff_x < -256 || diff_x > 255) {
-                new_buttons |= PS2_MDATA_XO;
-            }
-            ps2mouse_lastx = new_x;
-
-            diff_y = (int16_t)(new_y - ps2mouse_lasty);
-            if (diff_y < 0) {
-                new_buttons |= PS2_MDATA_YS;
-            }
-            if (diff_y < -256 || diff_y > 255) {
-                new_buttons |= PS2_MDATA_YO;
-            }
-            ps2mouse_lasty = new_y;
-#else
-            diff_x = 0;
-            diff_y = 0;
-#endif
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("x/y/b: %02x, %02x, %02x", diff_x, diff_y, new_buttons);
-#endif
-            return (ps2mouse_queue_put(PS2_REPLY_OK)
-                    && ps2mouse_queue_put(new_buttons)
-                    && ps2mouse_queue_put((uint8_t)diff_x)
-                    && ps2mouse_queue_put((uint8_t)diff_y));
-            break;
-
-        default:
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("unsupported command %02x", value);
-#endif
-            return (ps2mouse_queue_put(PS2_REPLY_ERROR) & 0);
-            break;
-    }
-    return 0;
-}
-
-
-struct alarm_s *c64dtv_ps2mouse_alarm;
-
-static void c64dtv_ps2mouse_alarm_handler(CLOCK offset, void *data)
-{
-    int another_alarm = 1;
-
-    alarm_unset(c64dtv_ps2mouse_alarm);
-
-    ps2mouse_out ^= PS2_CLK_BIT;
-    ps2mouse_out &= ~PS2_DATA_BIT;
-
-    switch (ps2mouse_xmit_state) {
-        case PS2_FROM_START:
-            ps2mouse_value = 0;
-            ps2mouse_parity = 0;
-            ps2mouse_out |= (ps2mouse_in & PS2_DATA_BIT);
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("start: clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
-                ++ps2mouse_xmit_state;
-            }
-            break;
-
-        case PS2_FROM_D0:
-        case PS2_FROM_D1:
-        case PS2_FROM_D2:
-        case PS2_FROM_D3:
-        case PS2_FROM_D4:
-        case PS2_FROM_D5:
-        case PS2_FROM_D6:
-        case PS2_FROM_D7:
-            if (ps2mouse_out & PS2_CLK_BIT) {
-                ps2mouse_value >>= 1;
-                if (ps2mouse_in & PS2_DATA_BIT) {
-                    ps2mouse_value |= 0x80;
-                    ps2mouse_parity ^= PS2_DATA_BIT;
-                }
-            }
-            ps2mouse_out |= (ps2mouse_in & PS2_DATA_BIT);
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("d%i: clk/data = %i/%i", ps2mouse_xmit_state - PS2_FROM_D0, (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
-                ++ps2mouse_xmit_state;
-            }
-            break;
-
-        case PS2_FROM_PARITY:
-            if (ps2mouse_out & PS2_CLK_BIT) {
-                if (ps2mouse_in & PS2_DATA_BIT) {
-                    ps2mouse_parity ^= PS2_DATA_BIT;
-                }
-            }
-            ps2mouse_out |= PS2_DATA_BIT;
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("parity: clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
-                ++ps2mouse_xmit_state;
-            }
-            break;
-
-        case PS2_FROM_STOP:
-            if (ps2mouse_out & PS2_CLK_BIT) {
-                if (ps2mouse_in & PS2_DATA_BIT) {
-                    ps2mouse_parity ^= PS2_DATA_BIT;
-                }
-                ps2mouse_out |= PS2_DATA_BIT;
-            } else {
-                ps2mouse_out |= ps2mouse_parity;
-            }
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("stop: clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
-                ++ps2mouse_xmit_state;
-            }
-            break;
-
-        case PS2_FROM_ACK:
-            ps2mouse_out |= PS2_DATA_BIT; /* ps2mouse_parity; */
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("got %02x, parity: %02x, clk/data = %i/%i", ps2mouse_value, ps2mouse_parity, (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-            another_alarm = ps2mouse_handle_command(ps2mouse_value);
-            break;
-
-        case PS2_CHECK_SEND:
-            if (ps2mouse_queue_empty()) {
-                ps2mouse_out |= (PS2_DATA_BIT | PS2_CLK_BIT);
-                another_alarm = 0;
-                ps2mouse_xmit_state = PS2_FROMTO_IDLE;
-#ifdef PS2MOUSE_DEBUG_ENABLED
-                PS2MOUSE_DEBUG("all sent. clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-                break;
-            }
-            if ((ps2mouse_in & PS2_CLK_BIT) == 0) {
-                ps2mouse_out &= ~PS2_CLK_BIT;
-#ifdef PS2MOUSE_DEBUG_ENABLED
-                PS2MOUSE_DEBUG("hold! clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-                break;
-            }
-
-            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
-                ps2mouse_parity = PS2_DATA_BIT;
-                ps2mouse_value = ps2mouse_queue_get();
-#ifdef PS2MOUSE_DEBUG_ENABLED
-                PS2MOUSE_DEBUG("sending %02x, clk/data = %i/%i", ps2mouse_value, (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-                ps2mouse_xmit_state = PS2_TO_D0;
-            }
-            break;
-
-        case PS2_TO_D0:
-        case PS2_TO_D1:
-        case PS2_TO_D2:
-        case PS2_TO_D3:
-        case PS2_TO_D4:
-        case PS2_TO_D5:
-        case PS2_TO_D6:
-        case PS2_TO_D7:
-            if (ps2mouse_out & PS2_CLK_BIT) {
-                ps2mouse_out |= (ps2mouse_value & 1) ? PS2_DATA_BIT : 0;
-                ps2mouse_prev = ps2mouse_out;
-                ps2mouse_parity ^= (ps2mouse_value & 1) ? PS2_DATA_BIT : 0;
-                ps2mouse_value >>= 1;
-            } else {
-                ps2mouse_out |= (ps2mouse_prev & PS2_DATA_BIT);
-            }
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("to_d%i: clk/data = %i/%i", ps2mouse_xmit_state - PS2_TO_D0, (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
-                ++ps2mouse_xmit_state;
-            }
-            break;
-
-        case PS2_TO_PARITY:
-            if (ps2mouse_out & PS2_CLK_BIT) {
-                ps2mouse_out |= ps2mouse_parity;
-                ps2mouse_prev = ps2mouse_out;
-            } else {
-                ps2mouse_out |= (ps2mouse_prev & PS2_DATA_BIT);
-            }
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("to_parity: clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
-                ++ps2mouse_xmit_state;
-            }
-            break;
-
-        case PS2_TO_STOP:
-            ps2mouse_out |= PS2_DATA_BIT;
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("stop: clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
-                ps2mouse_xmit_state = PS2_CHECK_SEND;
-            }
-            break;
-
-        default:
-            ps2mouse_out |= (PS2_DATA_BIT | PS2_CLK_BIT);
-            another_alarm = 0;
-            ps2mouse_xmit_state = PS2_FROMTO_IDLE;
-#ifdef PS2MOUSE_DEBUG_ENABLED
-            PS2MOUSE_DEBUG("bug! state %i. clk/data = %i/%i", ps2mouse_xmit_state, (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
-#endif
-            break;
-    }
-
-    if (another_alarm) {
-        alarm_set(c64dtv_ps2mouse_alarm, maincpu_clk + PS2_BIT_DELAY_CLK);
-    }
-}
-
-
-void ps2mouse_store(uint8_t value)
-{
-    ps2mouse_in = value;
-    if (((ps2mouse_prev & PS2_CLK_BIT) == 0) && (value & PS2_CLK_BIT)
-        && (ps2mouse_xmit_state == PS2_FROMTO_IDLE) && ((value & PS2_DATA_BIT) == 0)) {
-        ps2mouse_xmit_state = PS2_FROM_START;
-        ps2mouse_out = value;
-        alarm_set(c64dtv_ps2mouse_alarm, maincpu_clk + PS2_BIT_DELAY_CLK);
-    }
-    ps2mouse_prev = value;
-    return;
-}
-
-uint8_t ps2mouse_read(void)
-{
-    return ps2mouse_out;
-}
-
-/* ------------------------------------------------------------------------- */
-
-
-static void c64dtv_ps2mouse_alarm_init(void)
-{
-    c64dtv_ps2mouse_alarm = alarm_new(maincpu_alarm_context, "PS2MOUSEAlarm",
-                                      c64dtv_ps2mouse_alarm_handler, NULL);
-}
-
-void ps2mouse_reset(void)
-{
-    ps2mouse_in = 0xff;
-    ps2mouse_out = 0xff;
-    ps2mouse_prev = 0xff;
-    ps2mouse_xmit_state = PS2_FROMTO_IDLE;
-    ps2mouse_parity = 0;
-    ps2mouse_lastx = 0;
-    ps2mouse_lasty = 0;
-    ps2mouse_buttons = PS2_MDATA_A1;
-    ps2mouse_queue_head = 0;
-    ps2mouse_queue_tail = 0;
-    return;
-}
-
-/* ------------------------------------------------------------------------- */
-
-int ps2mouse_enabled = 0;
-
-static int set_ps2mouse_enable(int val, void *param)
-{
-    ps2mouse_enabled = (unsigned int)(val ? 1 : 0);
-
-    return 0;
-}
-
-static const resource_int_t resources_int[] = {
-    { "ps2mouse", 0, RES_EVENT_SAME, NULL,
-      &ps2mouse_enabled, set_ps2mouse_enable, NULL },
-    RESOURCE_INT_LIST_END
-};
-
-static const cmdline_option_t cmdline_options[] =
-{
-    { "-ps2mouse", SET_RESOURCE, CMDLINE_ATTRIB_NONE,
-      NULL, NULL, "PS2Mouse", (void *)1,
-      NULL, "Enable PS/2 mouse on userport" },
-    { "+ps2mouse", SET_RESOURCE, CMDLINE_ATTRIB_NONE,
-      NULL, NULL, "PS2Mouse", (void *)0,
-      NULL, "Disable PS/2 mouse on userport" },
-    CMDLINE_LIST_END
-};
-
-/* ------------------------------------------------------------------------- */
-
-static const mouse_func_t mouse_funcs =
-{
-    mouse_button_left,
-    mouse_button_right,
-    mouse_button_middle,
-    mouse_button_up,
-    mouse_button_down
-};
-
-int mouse_ps2_resources_init(void)
-{
-    if (resources_register_int(resources_int) < 0) {
-        return -1;
-    }
-
-    return mousedrv_resources_init(&mouse_funcs);
-}
-
-int mouse_ps2_cmdline_options_init(void)
-{
-    if (cmdline_register_options(cmdline_options) < 0) {
-        return -1;
-    }
-
-    return mousedrv_cmdline_options_init();
-}
-
-void mouse_ps2_init(void)
-{
-    if (ps2mouse_log == LOG_DEFAULT) {
-        ps2mouse_log = log_open("ps2mouse");
-    }
-
-    c64dtv_ps2mouse_alarm_init();
-
-    ps2mouse_reset();
-    mousedrv_init();
-}
-
-void mouse_ps2_shutdown(void)
-{
-}
-
-static void mouse_button_left(int pressed)
-{
-    if (pressed) {
-        ps2mouse_buttons |= PS2_MDATA_LB;
-    } else {
-        ps2mouse_buttons &= ~PS2_MDATA_LB;
-    }
-}
-
-static void mouse_button_middle(int pressed)
-{
-    if (pressed) {
-        ps2mouse_buttons |= PS2_MDATA_MB;
-    } else {
-        ps2mouse_buttons &= ~PS2_MDATA_MB;
-    }
-}
-
-static void mouse_button_right(int pressed)
-{
-    if (pressed) {
-        ps2mouse_buttons |= PS2_MDATA_RB;
-    } else {
-        ps2mouse_buttons &= ~PS2_MDATA_RB;
-    }
-}
-
-static void mouse_button_up(int pressed)
-{
-}
-
-static void mouse_button_down(int pressed)
-{
-}

Deleted: trunk/vice/src/ps2mouse.h
===================================================================
--- trunk/vice/src/ps2mouse.h	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/ps2mouse.h	2025-08-01 23:38:39 UTC (rev 45722)
@@ -1,51 +0,0 @@
-/*
- * ps2mouse.h - PS/2 mouse on userport emulation
- *
- * Written by
- *  Hannu Nuotio <han...@tu...>
- * Based on code by
- *  Andreas Boose <vic...@t-...>
- *
- * This file is part of VICE, the Versatile Commodore Emulator.
- * See README for copyright notice.
- *
- *  This program is free software; you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation; either version 2 of the License, or
- *  (at your option) any later version.
- *
- *  This program is distributed in the hope that it will be useful,
- *  but WITHOUT ANY WARRANTY; without even the implied warranty of
- *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- *  GNU General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program; if not, write to the Free Software
- *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
- *  02111-1307  USA.
- *
- */
-
-#ifndef VICE_PS2MOUSE_H
-#define VICE_PS2MOUSE_H
-
-#include "types.h"
-
-void ps2mouse_reset(void);
-
-uint8_t ps2mouse_read(void);
-void ps2mouse_store(uint8_t value);
-
-int ps2mouse_resources_init(void);
-int ps2mouse_cmdline_options_init(void);
-
-extern int ps2mouse_enabled;
-
-int mouse_ps2_resources_init(void);
-int mouse_ps2_cmdline_options_init(void);
-void mouse_ps2_init(void);
-void mouse_ps2_shutdown(void);
-
-extern int _mouse_enabled;
-
-#endif

Modified: trunk/vice/src/userport/Makefile.am
===================================================================
--- trunk/vice/src/userport/Makefile.am	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/userport/Makefile.am	2025-08-01 23:38:39 UTC (rev 45722)
@@ -49,6 +49,8 @@
 	userport_joystick.h \
 	userport_petscii_snespad.c \
 	userport_petscii_snespad.h \
+	userport_ps2mouse.c \
+	userport_ps2mouse.h \
 	userport_rtc_58321a.c \
 	userport_rtc_58321a.h \
 	userport_rtc_ds1307.c \

Modified: trunk/vice/src/userport/userport.c
===================================================================
--- trunk/vice/src/userport/userport.c	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/userport/userport.c	2025-08-01 23:38:39 UTC (rev 45722)
@@ -145,6 +145,7 @@
 #include "userport_hummer_joystick.h"
 #include "userport_io_sim.h"
 #include "userport_petscii_snespad.h"
+#include "userport_ps2mouse.h"
 #include "userport_rtc_58321a.h"
 #include "userport_rtc_ds1307.h"
 #include "userport_spt_joystick.h"
@@ -184,6 +185,7 @@
 #ifdef USERPORT_EXPERIMENTAL_DEVICES
     { USERPORT_DEVICE_TYPE_HARNESS, "Diagnostic harness" },
 #endif
+    { USERPORT_DEVICE_TYPE_MOUSE_ADAPTER, "Mouse adapter" },
     { -1, NULL }
 };
 
@@ -778,6 +780,13 @@
       userport_diag_pin_cmdline_options_init    /* cmdline options init function */
     },
 
+    { USERPORT_DEVICE_MOUSE_PS2,                /* device id */
+      UP_DTV,                                   /* emulators this device works on */
+      userport_ps2mouse_resources_init,         /* resources init function */
+      NULL,                                     /* resources shutdown function */
+      NULL                                      /* cmdline options init function */
+    },
+
     { USERPORT_DEVICE_NONE, VICE_MACHINE_NONE, NULL, NULL, NULL },   /* end of the devices list */
 };
 

Modified: trunk/vice/src/userport/userport.h
===================================================================
--- trunk/vice/src/userport/userport.h	2025-07-31 20:59:11 UTC (rev 45721)
+++ trunk/vice/src/userport/userport.h	2025-08-01 23:38:39 UTC (rev 45722)
@@ -70,6 +70,7 @@
     USERPORT_DEVICE_SPACEBALLS, /* CAUTION: also connects to the controller port(s) */
     USERPORT_DEVICE_SPT_JOYSTICK,
     USERPORT_DEVICE_DIAGNOSTIC_PIN,
+    USERPORT_DEVICE_MOUSE_PS2,
 
     /* This item always needs to be at the end */
     USERPORT_MAX_DEVICES
@@ -91,7 +92,8 @@
     USERPORT_DEVICE_TYPE_WIFI,
 #endif
     USERPORT_DEVICE_TYPE_IO_SIMULATION,
-    USERPORT_DEVICE_TYPE_DIAGNOSTIC
+    USERPORT_DEVICE_TYPE_DIAGNOSTIC,
+    USERPORT_DEVICE_TYPE_MOUSE_ADAPTER,
 };
 
 /* 24 pin userport pin defines */

Copied: trunk/vice/src/userport/userport_ps2mouse.c (from rev 45721, trunk/vice/src/ps2mouse.c)
===================================================================
--- trunk/vice/src/userport/userport_ps2mouse.c	                        (rev 0)
+++ trunk/vice/src/userport/userport_ps2mouse.c	2025-08-01 23:38:39 UTC (rev 45722)
@@ -0,0 +1,588 @@
+/*
+ * ps2mouse.c -- PS/2 mouse on userport emulation
+ *
+ * Written by
+ *  Hannu Nuotio <han...@tu...>
+ * Based on code by
+ *  Andreas Boose <vic...@t-...>
+ *
+ * This file is part of VICE, the Versatile Commodore Emulator.
+ * See README for copyright notice.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307  USA.
+ *
+ */
+
+#include "vice.h"
+
+#include "cmdline.h"
+#include "resources.h"
+#include "log.h"
+#include "joyport.h"
+#include "userport.h"
+#include "userport_ps2mouse.h"
+#include "alarm.h"
+#include "maincpu.h"
+#include "mousedrv.h"
+
+static void mouse_button_left(int pressed);
+static void mouse_button_right(int pressed);
+static void mouse_button_middle(int pressed);
+static void mouse_button_up(int pressed);
+static void mouse_button_down(int pressed);
+
+static log_t ps2mouse_log = LOG_DEFAULT;
+
+#if 0
+#define PS2MOUSE_DEBUG(args ...) log_message(ps2mouse_log, args)
+#define PS2MOUSE_DEBUG_ENABLED
+#endif
+
+/* PS/2 mouse port bits */
+#define PS2_CLK_BIT 0x40
+#define PS2_DATA_BIT 0x80
+
+/* PS/2 mouse timing */
+#define PS2_BIT_DELAY_CLK 75
+
+/* PS/2 mouse commands & replies (TODO: support more commands) */
+#define PS2_REPLY_OK 0xfa
+#define PS2_REPLY_ERROR 0xfc
+#define PS2_CMD_SET_REMOTE_MODE 0xf0
+#define PS2_CMD_READ_DATA 0xeb
+#define PS2_CMD_GET_DEV_ID 0xf2
+#define PS2_REPLY_DEV_ID 0x00
+
+/* PS/2 mouse movement packet bits */
+#define PS2_MDATA_YO 0x80
+#define PS2_MDATA_XO 0x40
+#define PS2_MDATA_YS 0x20
+#define PS2_MDATA_XS 0x10
+#define PS2_MDATA_A1 0x08
+#define PS2_MDATA_MB 0x04
+#define PS2_MDATA_RB 0x02
+#define PS2_MDATA_LB 0x01
+
+/* PS/2 mouse variables */
+static uint8_t ps2mouse_value;
+static uint8_t ps2mouse_in;
+static uint8_t ps2mouse_out;
+static uint8_t ps2mouse_prev;
+static uint8_t ps2mouse_parity;
+static int16_t ps2mouse_lastx;
+static int16_t ps2mouse_lasty;
+static uint8_t ps2mouse_buttons;
+
+/* PS/2 transmission state */
+enum {
+    PS2_FROMTO_IDLE=0,
+    PS2_FROM_START, /* mouse <- cpu */
+    PS2_FROM_D0,
+    PS2_FROM_D1,
+    PS2_FROM_D2,
+    PS2_FROM_D3,
+    PS2_FROM_D4,
+    PS2_FROM_D5,
+    PS2_FROM_D6,
+    PS2_FROM_D7,
+    PS2_FROM_PARITY,
+    PS2_FROM_STOP,
+    PS2_FROM_ACK,
+    PS2_CHECK_SEND, /* mouse -> cpu */
+    PS2_TO_D0,
+    PS2_TO_D1,
+    PS2_TO_D2,
+    PS2_TO_D3,
+    PS2_TO_D4,
+    PS2_TO_D5,
+    PS2_TO_D6,
+    PS2_TO_D7,
+    PS2_TO_PARITY,
+    PS2_TO_STOP
+} ps2mouse_xmit_state = PS2_FROMTO_IDLE;
+
+/* Output buffer */
+#define PS2_QUEUE_SIZE 8
+static uint8_t ps2mouse_queue[PS2_QUEUE_SIZE];
+static uint8_t ps2mouse_queue_head;
+static uint8_t ps2mouse_queue_tail;
+
+/* ------------------------------------------------------------------------- */
+
+static uint8_t userport_ps2mouse_read_pbx(uint8_t orig);
+static void userport_ps2mouse_store_pbx(uint8_t value, int pulse);
+static int userport_ps2mouse_enable(int val);
+static int userport_ps2mouse_write_snapshot_module(snapshot_t *s);
+static int userport_ps2mouse_read_snapshot_module(snapshot_t *s);
+
+static userport_device_t ps2mouse_device = {
+    "PS/2 Mouse",                                   /* device name */
+    JOYSTICK_ADAPTER_ID_NONE,                       /* this is NOT a joystick adapter */
+    USERPORT_DEVICE_TYPE_MOUSE_ADAPTER,             /* device is a mouse adapter */
+    userport_ps2mouse_enable,                       /* enable function */
+    userport_ps2mouse_read_pbx,                     /* read pb0-pb7 function */
+    userport_ps2mouse_store_pbx,                    /* store pb0-pb7 function */
+    NULL,                                           /* NO read pa2 pin function */
+    NULL,                                           /* NO store pa2 pin function */
+    NULL,                                           /* NO read pa3 pin function */
+    NULL,                                           /* NO store pa3 pin function */
+    0,                                              /* pc pin is NOT needed */
+    NULL,                                           /* NO store sp1 pin function */
+    NULL,                                           /* NO read sp1 pin function */
+    NULL,                                           /* NO store sp2 pin function */
+    NULL,                                           /* NO read sp2 pin function */
+    NULL,                                           /* NO reset function */
+    NULL,                                           /* NO powerup function */
+    userport_ps2mouse_write_snapshot_module,        /* snapshot write function */
+    userport_ps2mouse_read_snapshot_module          /* snapshot read function */
+};
+
+static int ps2mouse_enabled = 0;
+
+static int userport_ps2mouse_enable(int val)
+{
+    ps2mouse_enabled = (unsigned int)(val ? 1 : 0);
+
+    return 0;
+}
+
+int userport_ps2mouse_resources_init(void)
+{
+    return userport_device_register(USERPORT_DEVICE_MOUSE_PS2, &ps2mouse_device);
+}
+
+/* ---------------------------------------------------------------------*/
+
+static int userport_ps2mouse_write_snapshot_module(snapshot_t *s)
+{
+    /* FIXME */
+    return 0;
+}
+
+static int userport_ps2mouse_read_snapshot_module(snapshot_t *s)
+{
+    /* FIXME */
+    return 0;
+}
+
+/* ------------------------------------------------------------------------- */
+
+
+static int ps2mouse_queue_put(uint8_t value)
+{
+    uint8_t new_head = (ps2mouse_queue_head + 1) & (PS2_QUEUE_SIZE - 1);
+    if (new_head == ps2mouse_queue_tail) {
+#ifdef PS2MOUSE_DEBUG_ENABLED
+        PS2MOUSE_DEBUG("queue full!");
+#endif
+        return 0;
+    }
+    ps2mouse_queue[ps2mouse_queue_head] = value;
+    ps2mouse_queue_head = new_head;
+    return 1;
+}
+
+static int ps2mouse_queue_empty(void)
+{
+    return (ps2mouse_queue_head == ps2mouse_queue_tail);
+}
+
+static uint8_t ps2mouse_queue_get(void)
+{
+    uint8_t retval = ps2mouse_queue[ps2mouse_queue_tail];
+    ++ps2mouse_queue_tail;
+    ps2mouse_queue_tail &= (PS2_QUEUE_SIZE - 1);
+    return retval;
+}
+
+/* ------------------------------------------------------------------------- */
+
+
+static int ps2mouse_handle_command(uint8_t value)
+{
+    int16_t diff_x, diff_y, new_x, new_y;
+    uint8_t new_buttons;
+#ifdef PS2MOUSE_DEBUG_ENABLED
+    PS2MOUSE_DEBUG("cmd: got %02x", value);
+#endif
+    ps2mouse_xmit_state = PS2_CHECK_SEND;
+
+    if (ps2mouse_parity) {
+#ifdef PS2MOUSE_DEBUG_ENABLED
+        PS2MOUSE_DEBUG("parity error");
+#endif
+        return ps2mouse_queue_put(PS2_REPLY_ERROR);
+    }
+
+    switch (value) {
+        case PS2_CMD_GET_DEV_ID:
+            return (ps2mouse_queue_put(PS2_REPLY_OK)
+                    && ps2mouse_queue_put(PS2_REPLY_DEV_ID));
+            break;
+
+        case PS2_CMD_SET_REMOTE_MODE:
+#ifdef HAVE_MOUSE
+            mouse_poll(); /* HACK: should probably happen elsewhere */
+            mouse_get_raw_int16(&ps2mouse_lastx, &ps2mouse_lasty);
+#endif
+            return (ps2mouse_queue_put(PS2_REPLY_OK));
+            break;
+
+        case PS2_CMD_READ_DATA:
+            new_buttons = ps2mouse_buttons;
+#ifdef HAVE_MOUSE
+            mouse_poll(); /* HACK: should probably happen elsewhere */
+            mouse_get_raw_int16(&new_x, &new_y);
+
+            diff_x = (new_x - ps2mouse_lastx);
+            if (diff_x < 0) {
+                new_buttons |= PS2_MDATA_XS;
+            }
+            if (diff_x < -256 || diff_x > 255) {
+                new_buttons |= PS2_MDATA_XO;
+            }
+            ps2mouse_lastx = new_x;
+
+            diff_y = (int16_t)(new_y - ps2mouse_lasty);
+            if (diff_y < 0) {
+                new_buttons |= PS2_MDATA_YS;
+            }
+            if (diff_y < -256 || diff_y > 255) {
+                new_buttons |= PS2_MDATA_YO;
+            }
+            ps2mouse_lasty = new_y;
+#else
+            diff_x = 0;
+            diff_y = 0;
+#endif
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("x/y/b: %02x, %02x, %02x", diff_x, diff_y, new_buttons);
+#endif
+            return (ps2mouse_queue_put(PS2_REPLY_OK)
+                    && ps2mouse_queue_put(new_buttons)
+                    && ps2mouse_queue_put((uint8_t)diff_x)
+                    && ps2mouse_queue_put((uint8_t)diff_y));
+            break;
+
+        default:
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("unsupported command %02x", value);
+#endif
+            return (ps2mouse_queue_put(PS2_REPLY_ERROR) & 0);
+            break;
+    }
+    return 0;
+}
+
+
+struct alarm_s *c64dtv_ps2mouse_alarm;
+
+static void c64dtv_ps2mouse_alarm_handler(CLOCK offset, void *data)
+{
+    int another_alarm = 1;
+
+    alarm_unset(c64dtv_ps2mouse_alarm);
+
+    ps2mouse_out ^= PS2_CLK_BIT;
+    ps2mouse_out &= ~PS2_DATA_BIT;
+
+    switch (ps2mouse_xmit_state) {
+        case PS2_FROM_START:
+            ps2mouse_value = 0;
+            ps2mouse_parity = 0;
+            ps2mouse_out |= (ps2mouse_in & PS2_DATA_BIT);
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("start: clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
+                ++ps2mouse_xmit_state;
+            }
+            break;
+
+        case PS2_FROM_D0:
+        case PS2_FROM_D1:
+        case PS2_FROM_D2:
+        case PS2_FROM_D3:
+        case PS2_FROM_D4:
+        case PS2_FROM_D5:
+        case PS2_FROM_D6:
+        case PS2_FROM_D7:
+            if (ps2mouse_out & PS2_CLK_BIT) {
+                ps2mouse_value >>= 1;
+                if (ps2mouse_in & PS2_DATA_BIT) {
+                    ps2mouse_value |= 0x80;
+                    ps2mouse_parity ^= PS2_DATA_BIT;
+                }
+            }
+            ps2mouse_out |= (ps2mouse_in & PS2_DATA_BIT);
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("d%i: clk/data = %i/%i", ps2mouse_xmit_state - PS2_FROM_D0, (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
+                ++ps2mouse_xmit_state;
+            }
+            break;
+
+        case PS2_FROM_PARITY:
+            if (ps2mouse_out & PS2_CLK_BIT) {
+                if (ps2mouse_in & PS2_DATA_BIT) {
+                    ps2mouse_parity ^= PS2_DATA_BIT;
+                }
+            }
+            ps2mouse_out |= PS2_DATA_BIT;
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("parity: clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
+                ++ps2mouse_xmit_state;
+            }
+            break;
+
+        case PS2_FROM_STOP:
+            if (ps2mouse_out & PS2_CLK_BIT) {
+                if (ps2mouse_in & PS2_DATA_BIT) {
+                    ps2mouse_parity ^= PS2_DATA_BIT;
+                }
+                ps2mouse_out |= PS2_DATA_BIT;
+            } else {
+                ps2mouse_out |= ps2mouse_parity;
+            }
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("stop: clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
+                ++ps2mouse_xmit_state;
+            }
+            break;
+
+        case PS2_FROM_ACK:
+            ps2mouse_out |= PS2_DATA_BIT; /* ps2mouse_parity; */
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("got %02x, parity: %02x, clk/data = %i/%i", ps2mouse_value, ps2mouse_parity, (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+            another_alarm = ps2mouse_handle_command(ps2mouse_value);
+            break;
+
+        case PS2_CHECK_SEND:
+            if (ps2mouse_queue_empty()) {
+                ps2mouse_out |= (PS2_DATA_BIT | PS2_CLK_BIT);
+                another_alarm = 0;
+                ps2mouse_xmit_state = PS2_FROMTO_IDLE;
+#ifdef PS2MOUSE_DEBUG_ENABLED
+                PS2MOUSE_DEBUG("all sent. clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+                break;
+            }
+            if ((ps2mouse_in & PS2_CLK_BIT) == 0) {
+                ps2mouse_out &= ~PS2_CLK_BIT;
+#ifdef PS2MOUSE_DEBUG_ENABLED
+                PS2MOUSE_DEBUG("hold! clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+                break;
+            }
+
+            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
+                ps2mouse_parity = PS2_DATA_BIT;
+                ps2mouse_value = ps2mouse_queue_get();
+#ifdef PS2MOUSE_DEBUG_ENABLED
+                PS2MOUSE_DEBUG("sending %02x, clk/data = %i/%i", ps2mouse_value, (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+                ps2mouse_xmit_state = PS2_TO_D0;
+            }
+            break;
+
+        case PS2_TO_D0:
+        case PS2_TO_D1:
+        case PS2_TO_D2:
+        case PS2_TO_D3:
+        case PS2_TO_D4:
+        case PS2_TO_D5:
+        case PS2_TO_D6:
+        case PS2_TO_D7:
+            if (ps2mouse_out & PS2_CLK_BIT) {
+                ps2mouse_out |= (ps2mouse_value & 1) ? PS2_DATA_BIT : 0;
+                ps2mouse_prev = ps2mouse_out;
+                ps2mouse_parity ^= (ps2mouse_value & 1) ? PS2_DATA_BIT : 0;
+                ps2mouse_value >>= 1;
+            } else {
+                ps2mouse_out |= (ps2mouse_prev & PS2_DATA_BIT);
+            }
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("to_d%i: clk/data = %i/%i", ps2mouse_xmit_state - PS2_TO_D0, (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
+                ++ps2mouse_xmit_state;
+            }
+            break;
+
+        case PS2_TO_PARITY:
+            if (ps2mouse_out & PS2_CLK_BIT) {
+                ps2mouse_out |= ps2mouse_parity;
+                ps2mouse_prev = ps2mouse_out;
+            } else {
+                ps2mouse_out |= (ps2mouse_prev & PS2_DATA_BIT);
+            }
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("to_parity: clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
+                ++ps2mouse_xmit_state;
+            }
+            break;
+
+        case PS2_TO_STOP:
+            ps2mouse_out |= PS2_DATA_BIT;
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("stop: clk/data = %i/%i", (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+            if ((ps2mouse_out & PS2_CLK_BIT) == 0) {
+                ps2mouse_xmit_state = PS2_CHECK_SEND;
+            }
+            break;
+
+        default:
+            ps2mouse_out |= (PS2_DATA_BIT | PS2_CLK_BIT);
+            another_alarm = 0;
+            ps2mouse_xmit_state = PS2_FROMTO_IDLE;
+#ifdef PS2MOUSE_DEBUG_ENABLED
+            PS2MOUSE_DEBUG("bug! state %i. clk/data = %i/%i", ps2mouse_xmit_state, (ps2mouse_out >> 6) & 1, (ps2mouse_out >> 7) & 1);
+#endif
+            break;
+    }
+
+    if (another_alarm) {
+        alarm_set(c64dtv_ps2mouse_alarm, maincpu_clk + PS2_BIT_DELAY_CLK);
+    }
+}
+
+
+void userport_ps2mouse_store_pbx(uint8_t value, int pulse)
+{
+    ps2mouse_in = value;
+    if (((ps2mouse_prev & PS2_CLK_BIT) == 0) && (value & PS2_CLK_BIT)
+        && (ps2mouse_xmit_state == PS2_FROMTO_IDLE) && ((value & PS2_DATA_BIT) == 0)) {
+        ps2mouse_xmit_state = PS2_FROM_START;
+        ps2mouse_out = value;
+        alarm_set(c64dtv_ps2mouse_alarm, maincpu_clk + PS2_BIT_DELAY_CLK);
+    }
+    ps2mouse_prev = value;
+    return;
+}
+
+uint8_t userport_ps2mouse_read_pbx(uint8_t orig)
+{
+    return ps2mouse_out;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static void userport_ps2mouse_alarm_init(void)
+{
+    c64dtv_ps2mouse_alarm = alarm_new(maincpu_alarm_context, "PS2MOUSEAlarm",
+                                      c64dtv_ps2mouse_alarm_handler, NULL);
+}
+
+/* called from src/c64dtv/c64dtvmem.c:979 */
+void ps2mouse_reset(void)
+{
+    ps2mouse_in = 0xff;
+    ps2mouse_out = 0xff;
+    ps2mouse_prev = 0xff;
+    ps2mouse_xmit_state = PS2_FROMTO_IDLE;
+    ps2mouse_parity = 0;
+    ps2mouse_lastx = 0;
+    ps2mouse_lasty = 0;
+    ps2mouse_buttons = PS2_MDATA_A1;
+    ps2mouse_queue_head = 0;
+    ps2mouse_queue_tail = 0;
+    return;
+}
+
+/* ------------------------------------------------------------------------- */
+
+static const mouse_func_t mouse_funcs =
+{
+    mouse_button_left,
+    mouse_button_right,
+    mouse_button_middle,
+    mouse_button_up,
+    mouse_button_down
+};
+
+/* called from src/c64dtv/c64dtv.c:507 */
+int mouse_ps2_resources_init(void)
+{
+    return mousedrv_resources_init(&mouse_funcs);
+}
+
+/* called from src/c64dtv/c64dtv.c:637 */
+int mouse_ps2_cmdline_options_init(void)
+{
+    return mousedrv_cmdline_options_init();
+}
+
+/* called from src/c64dtv/c64dtv.c:776 */
+void mouse_ps2_init(void)
+{
+    if (ps2mouse_log == LOG_DEFAULT) {
+        ps2mouse_log = log_open("ps2mouse");
+    }
+
+    userport_ps2mouse_alarm_init();
+
+    ps2mouse_reset();
+    mousedrv_init();
+}
+
+/* called from src/c64dtv/c64dtv.c:823 */
+void mouse_ps2_shutdown(void)
+{
+}
+
+static void mouse_button_left(int pressed)
+{
+    if (pressed) {
+        ps2mouse_buttons |= PS2_MDATA_LB;
+    } else {
+        ps2mouse_buttons &= ~PS2_MDATA_LB;
+    }
+}
+
+static void mouse_button_middle(int pressed)
+{
+    if (pressed) {
+        ps2mouse_buttons |= PS2_MDATA_MB;
+    } else {
+        ps2mouse_buttons &= ~PS2_MDATA_MB;
+    }
+}
+
+static void mouse_button_right(int pressed)
+{
+    if (pressed) {
+        ps2mouse_buttons |= PS2_MDATA_RB;
+    } else {
+        ps2mouse_buttons &= ~PS2_MDATA_RB;
+    }
+}
+
+static void mouse_button_up(int pressed)
+{
+}
+
+static void mouse_button_down(int pressed)
+{
+}

Copied: trunk/vice/src/userport/userport_ps2mouse.h (from rev 45721, trunk/vice/src/ps2mouse.h)
===================================================================
--- trunk/vice/src/userport/userport_ps2mouse.h	                        (rev 0)
+++ trunk/vice/src/userport/userport_ps2mouse.h	2025-08-01 23:38:39 UTC (rev 45722)
@@ -0,0 +1,43 @@
+/*
+ * ps2mouse.h - PS/2 mouse on userport emulation
+ *
+ * Written by
+ *  Hannu Nuotio <han...@tu...>
+ * Based on code by
+ *  Andreas Boose <vic...@t-...>
+ *
+ * This file is part of VICE, the Versatile Commodore Emulator.
+ * See README for copyright notice.
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+ *  02111-1307  USA.
+ *
+ */
+
+#ifndef VICE_PS2MOUSE_H
+#define VICE_PS2MOUSE_H
+
+#include "types.h"
+
+int userport_ps2mouse_resources_init(void);
+
+void ps2mouse_reset(void);
+
+int mouse_ps2_resources_init(void);
+int mouse_ps2_cmdline_options_init(void);
+void mouse_ps2_init(void);
+void mouse_ps2_shutdown(void);
+
+#endif

This was sent by the SourceForge.net collaborative development platform, the world's largest Open Source development site.

Revision: 45721
          http://sourceforge.net/p/vice-emu/code/45721
Author:   gpz
Date:     2025-07-31 20:59:11 +0000 (Thu, 31 Jul 2025)
Log Message:
-----------
some refactoring, move all hummer-adc related code into hummeradc.c, and handle it like any other joystick adapter

Modified Paths:
--------------
    trunk/vice/src/c64dtv/c64dtv-cmdline-options.c
    trunk/vice/src/c64dtv/c64dtv-resources.c
    trunk/vice/src/c64dtv/c64dtv-resources.h
    trunk/vice/src/c64dtv/c64dtv-snapshot.c
    trunk/vice/src/c64dtv/c64dtv.c
    trunk/vice/src/c64dtv/c64dtvcia2.c
    trunk/vice/src/c64dtv/c64dtvmemsnapshot.c
    trunk/vice/src/c64dtv/c64dtvmemsnapshot.h
    trunk/vice/src/c64dtv/hummeradc.c
    trunk/vice/src/c64dtv/hummeradc.h

Modified: trunk/vice/src/c64dtv/c64dtv-cmdline-options.c
===================================================================
--- trunk/vice/src/c64dtv/c64dtv-cmdline-options.c	2025-07-31 00:06:54 UTC (rev 45720)
+++ trunk/vice/src/c64dtv/c64dtv-cmdline-options.c	2025-07-31 20:59:11 UTC (rev 45721)
@@ -97,13 +97,7 @@
       "<Name>", "Specify name of character generator ROM image" },
     { "-model", CALL_FUNCTION, CMDLINE_ATTRIB_NEED_ARGS,
       set_dtv_model, NULL, NULL, NULL,
-      "<Model>", "Set DTV model (v2/v2pal/v2ntsc, v3/v3pal/v3ntsc, hummer)" },
-    { "-hummeradc", SET_RESOURCE, CMDLINE_ATTRIB_NONE,
-      NULL, NULL, "HummerADC", (void *)1,
-      NULL, "Enable Hummer ADC" },
-    { "+hummeradc", SET_RESOURCE, CMDLINE_ATTRIB_NONE,
-      NULL, NULL, "HummerADC", (void *)0,
-      NULL, "Disable Hummer ADC" },
+      "<Model>", "Set DTV model (v2/v2pal/v2ntsc, v3/v3pal/v3ntsc, hummer/hummerpal/hummerntsc)" },
     CMDLINE_LIST_END
 };
 

Modified: trunk/vice/src/c64dtv/c64dtv-resources.c
===================================================================
--- trunk/vice/src/c64dtv/c64dtv-resources.c	2025-07-31 00:06:54 UTC (rev 45720)
+++ trunk/vice/src/c64dtv/c64dtv-resources.c	2025-07-31 20:59:11 UTC (rev 45721)
@@ -147,14 +147,6 @@
 }
 #endif
 
-int c64dtv_hummer_adc_enabled = 0;
-
-static int c64dtv_hummer_adc_set(int val, void *param)
-{
-    c64dtv_hummer_adc_enabled = val ? 1 : 0;
-    return 0;
-}
-
 static const resource_string_t resources_string[] = {
     { "ChargenName", C64_CHARGEN_NAME, RES_EVENT_NO, NULL,
       /* FIXME: should be same but names may differ */
@@ -171,8 +163,6 @@
 static const resource_int_t resources_int[] = {
     { "MachineVideoStandard", MACHINE_SYNC_PAL, RES_EVENT_SAME, NULL,
       &sync_factor, set_sync_factor, NULL },
-    { "HummerADC", 0, RES_EVENT_SAME, NULL,
-      (int *)&c64dtv_hummer_adc_enabled, c64dtv_hummer_adc_set, NULL },
     RESOURCE_INT_LIST_END
 };
 

Modified: trunk/vice/src/c64dtv/c64dtv-resources.h
===================================================================
--- trunk/vice/src/c64dtv/c64dtv-resources.h	2025-07-31 00:06:54 UTC (rev 45720)
+++ trunk/vice/src/c64dtv/c64dtv-resources.h	2025-07-31 20:59:11 UTC (rev 45721)
@@ -30,6 +30,4 @@
 int c64dtv_resources_init(void);
 void c64dtv_resources_shutdown(void);
 
-extern int c64dtv_hummer_adc_enabled;
-
 #endif

Modified: trunk/vice/src/c64dtv/c64dtv-snapshot.c
===================================================================
--- trunk/vice/src/c64dtv/c64dtv-snapshot.c	2025-07-31 00:06:54 UTC (rev 45720)
+++ trunk/vice/src/c64dtv/c64dtv-snapshot.c	2025-07-31 20:59:11 UTC (rev 45721)
@@ -41,6 +41,7 @@
 #include "cia.h"
 #include "drive-snapshot.h"
 #include "drive.h"
+#include "hummeradc.h"
 #include "joyport.h"
 #include "joystick.h"
 #include "keyboard.h"
@@ -82,7 +83,7 @@
         || c64dtv_snapshot_write_module(s, save_roms) < 0
         || c64dtvdma_snapshot_write_module(s) < 0
         || c64dtvblitter_snapshot_write_module(s) < 0
-        || c64dtvmisc_snapshot_write_module(s) < 0
+        || hummeradc_snapshot_write_module(s) < 0
         || ciacore_snapshot_write_module(machine_context.cia1, s) < 0
         || ciacore_snapshot_write_module(machine_context.cia2, s) < 0
         || sid_snapshot_write_module(s) < 0
@@ -127,7 +128,7 @@
         || c64dtv_snapshot_read_module(s) < 0
         || c64dtvdma_snapshot_read_module(s) < 0
         || c64dtvblitter_snapshot_read_module(s) < 0
-        || c64dtvmisc_snapshot_read_module(s) < 0
+        || hummeradc_snapshot_read_module(s) < 0
         || ciacore_snapshot_read_module(machine_context.cia1, s) < 0
         || ciacore_snapshot_read_module(machine_context.cia2, s) < 0
         || sid_snapshot_read_module(s) < 0

Modified: trunk/vice/src/c64dtv/c64dtv.c
===================================================================
--- trunk/vice/src/c64dtv/c64dtv.c	2025-07-31 00:06:54 UTC (rev 45720)
+++ trunk/vice/src/c64dtv/c64dtv.c	2025-07-31 20:59:11 UTC (rev 45721)
@@ -61,6 +61,7 @@
 #include "fliplist.h"
 #include "fsdevice.h"
 #include "gfxoutput.h"
+#include "hummeradc.h"
 #include "imagecontents.h"
 #include "inception.h"
 #include "init.h"
@@ -409,6 +410,10 @@
         init_resource_fail("c64dtv");
         return -1;
     }
+    if (hummeradc_resources_init() < 0) {
+        init_resource_fail("hummer adc");
+        return -1;
+    }
     if (c64dtvmem_resources_init() < 0) {
         init_resource_fail("c64dtvmem");
         return -1;
@@ -544,6 +549,10 @@
         init_cmdline_options_fail("c64dtv");
         return -1;
     }
+    if (hummeradc_cmdline_options_init() < 0) {
+        init_cmdline_options_fail("hummer adc");
+        return -1;
+    }
     if (c64dtvmem_cmdline_options_init() < 0) {
         init_cmdline_options_fail("c64dtvmem");
         return -1;

Modified: trunk/vice/src/c64dtv/c64dtvcia2.c
===================================================================
--- trunk/vice/src/c64dtv/c64dtvcia2.c	2025-07-31 00:06:54 UTC (rev 45720)
+++ trunk/vice/src/c64dtv/c64dtvcia2.c	2025-07-31 20:59:11 UTC (rev 45721)
@@ -56,16 +56,15 @@
 void cia2_store(uint16_t addr, uint8_t data)
 {
     if ((addr & 0x1f) == 1) {
-        /* HACK: for now only call the userport system when neither ps/2 mouse
-                 nor hummer adc is enabled */
-        if (!c64dtv_hummer_adc_enabled && !ps2mouse_enabled) {
+        /* HACK: for now only call the userport system when ps/2 mouse is disabled */
+        if (!ps2mouse_enabled) {
             store_userport_pbx(data, USERPORT_NO_PULSE);
         }
 
-        /* FIXME: convert hummer adc and ps/2 mouse support to new userport system */
         if (c64dtv_hummer_adc_enabled) {
             hummeradc_store(data);
         }
+        /* FIXME: convert ps/2 mouse support to new userport system */
         if (ps2mouse_enabled) {
             ps2mouse_store(data);
         }
@@ -79,13 +78,12 @@
     uint8_t retval = 0xff;
 
     if ((addr & 0x1f) == 1) {
-        /* HACK: for now only call the userport system when neither ps/2 mouse
-                 nor hummer adc is enabled */
-        if (!c64dtv_hummer_adc_enabled && !ps2mouse_enabled) {
+        /* HACK: for now only call the userport system when ps/2 mouse is disabled */
+        if (!ps2mouse_enabled) {
             retval = read_userport_pbx(retval);
         }
 
-        /* FIXME: convert hummer adc and ps/2 mouse support to new userport system */
+        /* FIXME: convert ps/2 mouse support to new userport system */
         if (ps2mouse_enabled) {
             retval &= (ps2mouse_read() | 0x3f);
         }

Modified: trunk/vice/src/c64dtv/c64dtvmemsnapshot.c
===================================================================
--- trunk/vice/src/c64dtv/c64dtvmemsnapshot.c	2025-07-31 00:06:54 UTC (rev 45720)
+++ trunk/vice/src/c64dtv/c64dtvmemsnapshot.c	2025-07-31 20:59:11 UTC (rev 45721)
@@ -276,82 +276,3 @@
     return -1;
 }
 
-#define SNAP_MAJOR 0
-#define SNAP_MINOR 0
-static const char snap_misc_module_name[] = "C64DTVMISC";
-
-int c64dtvmisc_snapshot_write_module(snapshot_t *s)
-{
-    snapshot_module_t *m;
-
-    /* Misc. module.  */
-    m = snapshot_module_create(s, snap_misc_module_name, SNAP_MAJOR, SNAP_MINOR);
-    if (m == NULL) {
-        return -1;
-    }
-
-    if (SMW_B(m, hummeradc_value) < 0
-        || SMW_B(m, hummeradc_channel) < 0
-        || SMW_B(m, hummeradc_control) < 0
-        || SMW_B(m, hummeradc_chanattr) < 0
-        || SMW_B(m, hummeradc_chanwakeup) < 0
-        || SMW_B(m, hummeradc_prev) < 0) {
-        goto fail;
-    }
-
-    if (snapshot_module_close(m) < 0) {
-        goto fail;
-    }
-    m = NULL;
-
-    return 0;
-
-fail:
-    if (m != NULL) {
-        snapshot_module_close(m);
-    }
-    return -1;
-}
-
-int c64dtvmisc_snapshot_read_module(snapshot_t *s)
-{
-    uint8_t major_version, minor_version;
-    snapshot_module_t *m;
-
-    /* Misc. module.  */
-    m = snapshot_module_open(s, snap_misc_module_name,
-                             &major_version, &minor_version);
-    if (m == NULL) {
-        return -1;
-    }
-
-    if (snapshot_version_is_bigger(major_version, minor_version, SNAP_MAJOR, SNAP_MINOR)) {
-        log_error(c64_snapshot_log,
-                  "Snapshot module version (%d.%d) newer than %d.%d.",
-                  major_version, minor_version,
-                  SNAP_MAJOR, SNAP_MINOR);
-        goto fail;
-    }
-
-    if (SMR_B(m, &hummeradc_value) < 0
-        || SMR_B(m, &hummeradc_channel) < 0
-        || SMR_B(m, &hummeradc_control) < 0
-        || SMR_B(m, &hummeradc_chanattr) < 0
-        || SMR_B(m, &hummeradc_chanwakeup) < 0
-        || SMR_B(m, &hummeradc_prev) < 0) {
-        goto fail;
-    }
-
-    if (snapshot_module_close(m) < 0) {
-        goto fail;
-    }
-    m = NULL;
-
-    return 0;
-
-fail:
-    if (m != NULL) {
-        snapshot_module_close(m);
-    }
-    return -1;
-}

Modified: trunk/vice/src/c64dtv/c64dtvmemsnapshot.h
===================================================================
--- trunk/vice/src/c64dtv/c64dtvmemsnapshot.h	2025-07-31 00:06:54 UTC (rev 45720)
+++ trunk/vice/src/c64dtv/c64dtvmemsnapshot.h	2025-07-31 20:59:11 UTC (rev 45721)
@@ -31,7 +31,5 @@
 
 int c64dtv_snapshot_write_module(struct snapshot_s *s, int save_roms);
 int c64dtv_snapshot_read_module(struct snapshot_s *s);
-int c64dtvmisc_snapshot_write_module(struct snapshot_s *s);
-int c64dtvmisc_snapshot_read_module(struct snapshot_s *s);
 
 #endif

Modified: trunk/vice/src/c64dtv/hummeradc.c
===================================================================
--- trunk/vice/src/c64dtv/hummeradc.c	2025-07-31 00:06:54 UTC (rev 45720)
+++ trunk/vice/src/c64dtv/hummeradc.c	2025-07-31 20:59:11 UTC (rev 45721)
@@ -27,10 +27,12 @@
 #include "vice.h"
 
 #include "c64dtv-resources.h"
+#include "cmdline.h"
 #include "hummeradc.h"
 #include "joystick.h"
 #include "log.h"
 #include "resources.h"
+#include "uiapi.h"
 
 static log_t hummeradc_log = LOG_DEFAULT;
 
@@ -45,13 +47,12 @@
 #define ADC_DIO_BIT 0x01
 
 /* Hummer ADC variables */
-/* FIXME: move code from c64dtvmemsnapshot.c here, make static */
-uint8_t hummeradc_value;
-uint8_t hummeradc_channel;
-uint8_t hummeradc_control;
-uint8_t hummeradc_chanattr;
-uint8_t hummeradc_chanwakeup;
-uint8_t hummeradc_prev;
+static uint8_t hummeradc_value;
+static uint8_t hummeradc_channel;
+static uint8_t hummeradc_control;
+static uint8_t hummeradc_chanattr;
+static uint8_t hummeradc_chanwakeup;
+static uint8_t hummeradc_prev;
 
 /* Hummer ADC state */
 enum {
@@ -311,6 +312,12 @@
 
 /* ------------------------------------------------------------------------- */
 
+
+int hummeradc_enable(int value)
+{
+    return 0;
+}
+
 void hummeradc_init(void)
 {
     if (hummeradc_log == LOG_DEFAULT) {
@@ -337,3 +344,139 @@
     hummeradc_chanwakeup = 0;
     return;
 }
+
+int c64dtv_hummer_adc_enabled = 0;
+
+static int c64dtv_hummer_adc_set(int value, void *param)
+{
+    int val = value ? 1 : 0;
+
+    if (c64dtv_hummer_adc_enabled == val) {
+        return 0;
+    }
+
+    if (val) {
+        /* check if a different joystick adapter is already active */
+        if (joystick_adapter_get_id()) {
+            ui_error("Joystick adapter %s is already active", joystick_adapter_get_name());
+            return -1;
+        }
+        joystick_adapter_activate(JOYSTICK_ADAPTER_ID_GENERIC_USERPORT, "Hummer ADC");
+
+        /* Enable 1 extra joystick port, without +5VDC support */
+        joystick_adapter_set_ports(1, 0);
+    } else {
+        joystick_adapter_deactivate();
+    }
+
+    c64dtv_hummer_adc_enabled = val;
+
+    return 0;
+}
+
+static const resource_int_t resources_int[] = {
+    { "HummerADC", 0, RES_EVENT_SAME, NULL,
+      (int *)&c64dtv_hummer_adc_enabled, c64dtv_hummer_adc_set, NULL },
+    RESOURCE_INT_LIST_END
+};
+
+int hummeradc_resources_init(void)
+{
+    return resources_register_int(resources_int);
+}
+
+static const cmdline_option_t cmdline_options[] =
+{
+    { "-hummeradc", SET_RESOURCE, CMDLINE_ATTRIB_NONE,
+      NULL, NULL, "HummerADC", (void *)1,
+      NULL, "Enable Hummer ADC" },
+    { "+hummeradc", SET_RESOURCE, CMDLINE_ATTRIB_NONE,
+      NULL, NULL, "HummerADC", (void *)0,
+      NULL, "Disable Hummer ADC" },
+    CMDLINE_LIST_END
+};
+
+int hummeradc_cmdline_options_init(void)
+{
+    return cmdline_register_options(cmdline_options);
+}
+
+#define SNAP_MAJOR 0
+#define SNAP_MINOR 0
+static const char snap_misc_module_name[] = "HUMMERADC";
+
+int hummeradc_snapshot_write_module(snapshot_t *s)
+{
+    snapshot_module_t *m;
+
+    /* Misc. module.  */
+    m = snapshot_module_create(s, snap_misc_module_name, SNAP_MAJOR, SNAP_MINOR);
+    if (m == NULL) {
+        return -1;
+    }
+
+    if (SMW_B(m, hummeradc_value) < 0
+        || SMW_B(m, hummeradc_channel) < 0
+        || SMW_B(m, hummeradc_control) < 0
+        || SMW_B(m, hummeradc_chanattr) < 0
+        || SMW_B(m, hummeradc_chanwakeup) < 0
+        || SMW_B(m, hummeradc_prev) < 0) {
+        goto fail;
+    }
+
+    if (snapshot_module_close(m) < 0) {
+        goto fail;
+    }
+    m = NULL;
+
+    return 0;
+
+fail:
+    if (m != NULL) {
+        snapshot_module_close(m);
+    }
+    return -1;
+}
+
+int hummeradc_snapshot_read_module(snapshot_t *s)
+{
+    uint8_t major_version, minor_version;
+    snapshot_module_t *m;
+
+    /* Misc. module.  */
+    m = snapshot_module_open(s, snap_misc_module_name,
+                             &major_version, &minor_version);
+    if (m == NULL) {
+        return -1;
+    }
+
+    if (snapshot_version_is_bigger(major_version, minor_version, SNAP_MAJOR, SNAP_MINOR)) {
+        log_error(hummeradc_log,
+                  "Snapshot module version (%d.%d) newer than %d.%d.",
+                  major_version, minor_version,
+                  SNAP_MAJOR, SNAP_MINOR);
+        goto fail;
+    }
+
+    if (SMR_B(m, &hummeradc_value) < 0
+        || SMR_B(m, &hummeradc_channel) < 0
+        || SMR_B(m, &hummeradc_control) < 0
+        || SMR_B(m, &hummeradc_chanattr) < 0
+        || SMR_B(m, &hummeradc_chanwakeup) < 0
+        || SMR_B(m, &hummeradc_prev) < 0) {
+        goto fail;
+    }
+
+    if (snapshot_module_close(m) < 0) {
+        goto fail;
+    }
+    m = NULL;
+
+    return 0;
+
+fail:
+    if (m != NULL) {
+        snapshot_module_close(m);
+    }
+    return -1;
+}

Modified: trunk/vice/src/c64dtv/hummeradc.h
===================================================================
--- trunk/vice/src/c64dtv/hummeradc.h	2025-07-31 00:06:54 UTC (rev 45720)
+++ trunk/vice/src/c64dtv/hummeradc.h	2025-07-31 20:59:11 UTC (rev 45721)
@@ -28,6 +28,7 @@
 #define VICE_HUMMERADC_H
 
 #include "types.h"
+#include "snapshot.h"
 
 void hummeradc_init(void);
 void hummeradc_reset(void);
@@ -36,11 +37,14 @@
 uint8_t hummeradc_read(void);
 void hummeradc_store(uint8_t value);
 
-extern uint8_t hummeradc_value;
-extern uint8_t hummeradc_channel;
-extern uint8_t hummeradc_control;
-extern uint8_t hummeradc_chanattr;
-extern uint8_t hummeradc_chanwakeup;
-extern uint8_t hummeradc_prev;
+int hummeradc_enable(int value);
 
+extern int c64dtv_hummer_adc_enabled;
+
+int hummeradc_cmdline_options_init(void);
+int hummeradc_resources_init(void);
+
+int hummeradc_snapshot_write_module(snapshot_t *s);
+int hummeradc_snapshot_read_module(snapshot_t *s);
+
 #endif

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