v107.8

* GB: integrated SameBoy v0.12.1 by Lior Halphon
* SFC: added HG51B169 (Cx4) math tables into bsnes binary

bsnes/emulator/emulator.hpp

@@ -32,7 +32,7 @@ using namespace nall;
 
 namespace Emulator {
   static const string Name    = "bsnes";
-  static const string Version = "107.7";
+  static const string Version = "107.8";
   static const string Author  = "byuu";
   static const string License = "GPLv3";
   static const string Website = "https://byuu.org/";

bsnes/gb/Core/apu.c

@@ -506,6 +506,11 @@ void GB_apu_run(GB_gameboy_t *gb)
 void GB_apu_init(GB_gameboy_t *gb)
 {
     memset(&gb->apu, 0, sizeof(gb->apu));
+    /* Restore the wave form */
+    for (unsigned reg = GB_IO_WAV_START; reg <= GB_IO_WAV_END; reg++) {
+        gb->apu.wave_channel.wave_form[(reg - GB_IO_WAV_START) * 2]     = gb->io_registers[reg] >> 4;
+        gb->apu.wave_channel.wave_form[(reg - GB_IO_WAV_START) * 2 + 1] = gb->io_registers[reg] & 0xF;
+    }
     gb->apu.lf_div = 1;
     /* APU glitch: When turning the APU on while DIV's bit 4 (or 5 in double speed mode) is on,
        the first DIV/APU event is skipped. */
@@ -556,7 +561,7 @@ uint8_t GB_apu_read(GB_gameboy_t *gb, uint8_t reg)
 
 void GB_apu_write(GB_gameboy_t *gb, uint8_t reg, uint8_t value)
 {
-    if (!gb->apu.global_enable && reg != GB_IO_NR52 && (GB_is_cgb(gb) ||
+    if (!gb->apu.global_enable && reg != GB_IO_NR52 && reg < GB_IO_WAV_START && (GB_is_cgb(gb) ||
                                                                                 (
                                                                                 reg != GB_IO_NR11 &&
                                                                                 reg != GB_IO_NR21 &&

bsnes/gb/Core/debugger.c

@@ -2172,7 +2172,7 @@ void GB_debugger_load_symbol_file(GB_gameboy_t *gb, const char *path)
         unsigned bank, address;
         char symbol[length];
 
-        if (sscanf(line, "%02x:%04x %s", &bank, &address, symbol) == 3) {
+        if (sscanf(line, "%x:%x %s", &bank, &address, symbol) == 3) {
             bank &= 0x1FF;
             if (!gb->bank_symbols[bank]) {
                 gb->bank_symbols[bank] = GB_map_alloc();

bsnes/gb/Core/display.c

@@ -123,8 +123,8 @@ static void display_vblank(GB_gameboy_t *gb)
 {  
     gb->vblank_just_occured = true;
     
-    /* TODO: Slow in trubo mode! */
-    if (GB_is_sgb(gb)) {
+    /* TODO: Slow in turbo mode! */
+    if (GB_is_hle_sgb(gb)) {
         GB_sgb_render(gb);
     }
 
@@ -137,9 +137,8 @@ static void display_vblank(GB_gameboy_t *gb)
     if (!gb->disable_rendering && ((!(gb->io_registers[GB_IO_LCDC] & 0x80) || gb->stopped) || gb->frame_skip_state == GB_FRAMESKIP_LCD_TURNED_ON)) {
         /* LCD is off, set screen to white or black (if LCD is on in stop mode) */
         if (gb->sgb) {
-            uint8_t color = (gb->io_registers[GB_IO_LCDC] & 0x80)  && gb->stopped && GB_is_cgb(gb) ? 0x3 : 0x0;
             for (unsigned i = 0; i < WIDTH * LINES; i++) {
-                gb->sgb->screen_buffer[i] = color;
+                gb->sgb->screen_buffer[i] = 0x0;
             }
         }
         else {
@@ -377,6 +376,8 @@ static void render_pixel_if_possible(GB_gameboy_t *gb)
         }
     }
 
+    uint8_t icd_pixel = 0;
+    
     {
         uint8_t pixel = bg_enabled? fifo_item->pixel : 0;
         if (pixel && bg_priority) {
@@ -387,7 +388,13 @@ static void render_pixel_if_possible(GB_gameboy_t *gb)
         }
         if (gb->sgb) {
             if (gb->current_lcd_line < LINES) {
-                gb->sgb->screen_buffer[gb->position_in_line + gb->current_lcd_line * WIDTH] = pixel;
+                gb->sgb->screen_buffer[gb->position_in_line + gb->current_lcd_line * WIDTH] = gb->stopped? 0 : pixel;
+            }
+        }
+        else if (gb->model & GB_MODEL_NO_SFC_BIT) {
+            if (gb->icd_pixel_callback) {
+                icd_pixel = pixel;
+              //gb->icd_pixel_callback(gb, pixel);
             }
         }
         else {
@@ -403,7 +410,13 @@ static void render_pixel_if_possible(GB_gameboy_t *gb)
         }
         if (gb->sgb) {
             if (gb->current_lcd_line < LINES) {
-                gb->sgb->screen_buffer[gb->position_in_line + gb->current_lcd_line * WIDTH] = pixel;
+                gb->sgb->screen_buffer[gb->position_in_line + gb->current_lcd_line * WIDTH] = gb->stopped? 0 : pixel;
+            }
+        }
+        else if (gb->model & GB_MODEL_NO_SFC_BIT) {
+            if (gb->icd_pixel_callback) {
+                icd_pixel = pixel;
+              //gb->icd_pixel_callback(gb, pixel);
             }
         }
         else {
@@ -411,6 +424,13 @@ static void render_pixel_if_possible(GB_gameboy_t *gb)
         }
     }
 
+    /* byuu: gotta do this later so it's only done once ... you'll probably wanna refactor this somehow :/ */
+    if (gb->model & GB_MODEL_NO_SFC_BIT) {
+        if (gb->icd_pixel_callback) {
+            gb->icd_pixel_callback(gb, icd_pixel);
+        }
+    }
+    
     gb->position_in_line++;
 }
 
@@ -890,6 +910,11 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles)
             }
             GB_SLEEP(gb, display, 11, LINE_LENGTH - gb->cycles_for_line);
             gb->mode_for_interrupt = 2;
+            
+            /* TODO: Can this timing even be verified? */
+            if (gb->icd_hreset_callback) {
+                gb->icd_hreset_callback(gb);
+            }
         }
         
         /* Lines 144 - 152 */
@@ -961,7 +986,11 @@ void GB_display_run(GB_gameboy_t *gb, uint8_t cycles)
         gb->wy_diff = 0;
         gb->window_disabled_while_active = false;
         gb->current_line = 0;
-        gb->current_lcd_line = -1; // TODO: not the correct timing
+        // TODO: not the correct timing
+        gb->current_lcd_line = -1;
+        if (gb->icd_vreset_callback) {
+            gb->icd_vreset_callback(gb);
+        }
     }
 }
 

bsnes/gb/Core/gb.c

@@ -112,6 +112,11 @@ void GB_init(GB_gameboy_t *gb, GB_model_t model)
     gb->cartridge_type = &GB_cart_defs[0]; // Default cartridge type
     gb->clock_multiplier = 1.0;
     
+    if (model & GB_MODEL_NO_SFC_BIT) {
+        /* Disable time syncing. Timing should be done by the SFC emulator. */
+        gb->turbo = true;
+    }
+    
     GB_reset(gb);
 }
 
@@ -193,26 +198,27 @@ int GB_load_rom(GB_gameboy_t *gb, const char *path)
     }
     gb->rom = malloc(gb->rom_size);
     memset(gb->rom, 0xFF, gb->rom_size); /* Pad with 0xFFs */
-    fread(gb->rom, gb->rom_size, 1, f);
+    fread(gb->rom, 1, gb->rom_size, f);
     fclose(f);
     GB_configure_cart(gb);
 
     return 0;
 }
 
-/* byuu */
-int GB_load_rom_from_buffer(GB_gameboy_t* gb, const unsigned char* buffer, size_t size) {
+void GB_load_rom_from_buffer(GB_gameboy_t *gb, const uint8_t *buffer, size_t size)
+{
     gb->rom_size = (size + 0x3fff) & ~0x3fff;
-  while(gb->rom_size & (gb->rom_size - 1)) {
+    while (gb->rom_size & (gb->rom_size - 1)) {
         gb->rom_size |= gb->rom_size >> 1;
         gb->rom_size++;
     }
-  if(gb->rom) free(gb->rom);
-  gb->rom = (uint8_t*)malloc(gb->rom_size);
+    if (gb->rom) {
+        free(gb->rom);
+    }
+    gb->rom = malloc(gb->rom_size);
     memset(gb->rom, 0xff, gb->rom_size);
     memcpy(gb->rom, buffer, size);
     GB_configure_cart(gb);
-  return 0;
 }
 
 typedef struct {
@@ -548,6 +554,11 @@ bool GB_is_cgb(GB_gameboy_t *gb)
 }
 
 bool GB_is_sgb(GB_gameboy_t *gb)
+{
+    return (gb->model & ~GB_MODEL_PAL_BIT & ~GB_MODEL_NO_SFC_BIT) == GB_MODEL_SGB || (gb->model & ~GB_MODEL_NO_SFC_BIT) == GB_MODEL_SGB2;
+}
+
+bool GB_is_hle_sgb(GB_gameboy_t *gb)
 {
     return (gb->model & ~GB_MODEL_PAL_BIT) == GB_MODEL_SGB || gb->model == GB_MODEL_SGB2;
 }
@@ -586,6 +597,7 @@ static void reset_ram(GB_gameboy_t *gb)
         case GB_MODEL_DMG_B:
         case GB_MODEL_SGB_NTSC: /* Unverified*/
         case GB_MODEL_SGB_PAL: /* Unverified */
+        case GB_MODEL_SGB_NO_SFC:
             for (unsigned i = 0; i < gb->ram_size; i++) {
                 gb->ram[i] = GB_random();
                 if (i & 0x100) {
@@ -598,6 +610,7 @@ static void reset_ram(GB_gameboy_t *gb)
             break;
             
         case GB_MODEL_SGB2:
+        case GB_MODEL_SGB2_NO_SFC:
             for (unsigned i = 0; i < gb->ram_size; i++) {
                 gb->ram[i] = 0x55;
                 gb->ram[i] ^= GB_random() & GB_random() & GB_random();
@@ -630,7 +643,9 @@ static void reset_ram(GB_gameboy_t *gb)
         case GB_MODEL_DMG_B:
         case GB_MODEL_SGB_NTSC: /* Unverified*/
         case GB_MODEL_SGB_PAL: /* Unverified */
+        case GB_MODEL_SGB_NO_SFC:
         case GB_MODEL_SGB2:
+        case GB_MODEL_SGB2_NO_SFC:
             for (unsigned i = 0; i < sizeof(gb->hram); i++) {
                 if (i & 1) {
                     gb->hram[i] = GB_random() | GB_random() | GB_random();
@@ -651,9 +666,11 @@ static void reset_ram(GB_gameboy_t *gb)
             break;
             
         case GB_MODEL_DMG_B:
-        case GB_MODEL_SGB_NTSC: /* Unverified*/
+        case GB_MODEL_SGB_NTSC: /* Unverified */
         case GB_MODEL_SGB_PAL: /* Unverified */
+        case GB_MODEL_SGB_NO_SFC: /* Unverified */
         case GB_MODEL_SGB2:
+        case GB_MODEL_SGB2_NO_SFC:
             for (unsigned i = 0; i < 8; i++) {
                 if (i & 2) {
                     gb->oam[i] = GB_random() & GB_random() & GB_random();
@@ -679,7 +696,9 @@ static void reset_ram(GB_gameboy_t *gb)
         case GB_MODEL_DMG_B:
         case GB_MODEL_SGB_NTSC: /* Unverified*/
         case GB_MODEL_SGB_PAL: /* Unverified */
-        case GB_MODEL_SGB2: {
+        case GB_MODEL_SGB_NO_SFC: /* Unverified */
+        case GB_MODEL_SGB2:
+        case GB_MODEL_SGB2_NO_SFC: {
             uint8_t temp;
             for (unsigned i = 0; i < GB_IO_WAV_END - GB_IO_WAV_START; i++) {
                 if (i & 1) {
@@ -760,7 +779,7 @@ void GB_reset(GB_gameboy_t *gb)
     gb->accessed_oam_row = -1;
     
     
-    if (GB_is_sgb(gb)) {
+    if (GB_is_hle_sgb(gb)) {
         if (!gb->sgb) {
             gb->sgb = malloc(sizeof(*gb->sgb));
         }
@@ -894,17 +913,17 @@ uint32_t GB_get_clock_rate(GB_gameboy_t *gb)
 
 unsigned GB_get_screen_width(GB_gameboy_t *gb)
 {
-    return GB_is_sgb(gb)? 256 : 160;
+    return GB_is_hle_sgb(gb)? 256 : 160;
 }
 
 unsigned GB_get_screen_height(GB_gameboy_t *gb)
 {
-    return GB_is_sgb(gb)? 224 : 144;
+    return GB_is_hle_sgb(gb)? 224 : 144;
 }
 
 unsigned GB_get_player_count(GB_gameboy_t *gb)
 {
-    return GB_is_sgb(gb)? gb->sgb->player_count : 1;
+    return GB_is_hle_sgb(gb)? gb->sgb->player_count : 1;
 }
 
 void GB_set_update_input_hint_callback(GB_gameboy_t *gb, GB_update_input_hint_callback_t callback)
@@ -916,3 +935,24 @@ double GB_get_usual_frame_rate(GB_gameboy_t *gb)
 {
     return GB_get_clock_rate(gb) / (double)LCDC_PERIOD;
 }
+
+void GB_set_joyp_write_callback(GB_gameboy_t *gb, GB_joyp_write_callback_t callback)
+{
+    gb->joyp_write_callback = callback;
+}
+
+void GB_set_icd_pixel_callback(GB_gameboy_t *gb, GB_icd_pixel_callback_t callback)
+{
+    gb->icd_pixel_callback = callback;
+}
+
+void GB_set_icd_hreset_callback(GB_gameboy_t *gb, GB_icd_hreset_callback_t callback)
+{
+    gb->icd_hreset_callback = callback;
+}
+
+
+void GB_set_icd_vreset_callback(GB_gameboy_t *gb, GB_icd_vreset_callback_t callback)
+{
+    gb->icd_vreset_callback = callback;
+}

bsnes/gb/Core/gb.h

@@ -23,13 +23,14 @@
 
 #define GB_STRUCT_VERSION 13
 
-#ifdef GB_INTERNAL
 #define GB_MODEL_FAMILY_MASK 0xF00
 #define GB_MODEL_DMG_FAMILY 0x000
 #define GB_MODEL_MGB_FAMILY 0x100
 #define GB_MODEL_CGB_FAMILY 0x200
 #define GB_MODEL_PAL_BIT 0x1000
+#define GB_MODEL_NO_SFC_BIT 0x2000
 
+#ifdef GB_INTERNAL
 #if __clang__
 #define UNROLL _Pragma("unroll")
 #elif __GNUC__
@@ -67,9 +68,11 @@ typedef enum {
     // GB_MODEL_DMG_C = 0x003,
     GB_MODEL_SGB = 0x004,
     GB_MODEL_SGB_NTSC = GB_MODEL_SGB,
-    GB_MODEL_SGB_PAL = 0x1004,
+    GB_MODEL_SGB_PAL = GB_MODEL_SGB | GB_MODEL_PAL_BIT,
+    GB_MODEL_SGB_NO_SFC = GB_MODEL_SGB | GB_MODEL_NO_SFC_BIT,
     // GB_MODEL_MGB = 0x100,
     GB_MODEL_SGB2 = 0x101,
+    GB_MODEL_SGB2_NO_SFC = GB_MODEL_SGB2 | GB_MODEL_NO_SFC_BIT,
     // GB_MODEL_CGB_0 = 0x200,
     // GB_MODEL_CGB_A = 0x201,
     // GB_MODEL_CGB_B = 0x202,
@@ -239,6 +242,10 @@ typedef void (*GB_rumble_callback_t)(GB_gameboy_t *gb, bool rumble_on);
 typedef void (*GB_serial_transfer_bit_start_callback_t)(GB_gameboy_t *gb, bool bit_to_send);
 typedef bool (*GB_serial_transfer_bit_end_callback_t)(GB_gameboy_t *gb);
 typedef void (*GB_update_input_hint_callback_t)(GB_gameboy_t *gb);
+typedef void (*GB_joyp_write_callback_t)(GB_gameboy_t *gb, uint8_t value);
+typedef void (*GB_icd_pixel_callback_t)(GB_gameboy_t *gb, uint8_t row);
+typedef void (*GB_icd_hreset_callback_t)(GB_gameboy_t *gb);
+typedef void (*GB_icd_vreset_callback_t)(GB_gameboy_t *gb);
 
 typedef struct {
     bool state;
@@ -444,6 +451,7 @@ struct GB_gameboy_internal_s {
         /* The LCDC will skip the first frame it renders after turning it on.
            On the CGB, a frame is not skipped if the previous frame was skipped as well.
            See https://www.reddit.com/r/EmuDev/comments/6exyxu/ */
+               
         /* TODO: Drop this and properly emulate the dropped vreset signal*/
         enum {
             GB_FRAMESKIP_LCD_TURNED_ON, // On a DMG, the LCD renders a blank screen during this state,
@@ -530,6 +538,10 @@ struct GB_gameboy_internal_s {
         GB_serial_transfer_bit_start_callback_t serial_transfer_bit_start_callback;
         GB_serial_transfer_bit_end_callback_t serial_transfer_bit_end_callback;
         GB_update_input_hint_callback_t update_input_hint_callback;
+        GB_joyp_write_callback_t joyp_write_callback;
+        GB_icd_pixel_callback_t icd_pixel_callback;
+        GB_icd_vreset_callback_t icd_hreset_callback;
+        GB_icd_vreset_callback_t icd_vreset_callback;
                
         /* IR */
         long cycles_since_ir_change; // In 8MHz units
@@ -617,13 +629,14 @@ __attribute__((__format__ (__printf__, fmtarg, firstvararg)))
 void GB_init(GB_gameboy_t *gb, GB_model_t model);
 bool GB_is_inited(GB_gameboy_t *gb);
 bool GB_is_cgb(GB_gameboy_t *gb);
-bool GB_is_sgb(GB_gameboy_t *gb);
+bool GB_is_sgb(GB_gameboy_t *gb); // Returns true if the model is SGB or SGB2
+bool GB_is_hle_sgb(GB_gameboy_t *gb); // Returns true if the model is SGB or SGB2 and the SFC/SNES side is HLE'd
 GB_model_t GB_get_model(GB_gameboy_t *gb);
 void GB_free(GB_gameboy_t *gb);
 void GB_reset(GB_gameboy_t *gb);
 void GB_switch_model_and_reset(GB_gameboy_t *gb, GB_model_t model);
 
-/* Returns the time passed, in 4MHz ticks. */
+/* Returns the time passed, in 8MHz ticks. */
 uint8_t GB_run(GB_gameboy_t *gb);
 /* Returns the time passed since the last frame, in nanoseconds */
 uint64_t GB_run_frame(GB_gameboy_t *gb);
@@ -654,7 +667,7 @@ void GB_set_user_data(GB_gameboy_t *gb, void *data);
 int GB_load_boot_rom(GB_gameboy_t *gb, const char *path);
 void GB_load_boot_rom_from_buffer(GB_gameboy_t *gb, const unsigned char *buffer, size_t size);
 int GB_load_rom(GB_gameboy_t *gb, const char *path);
-int GB_load_rom_from_buffer(GB_gameboy_t* gb, const unsigned char* buffer, size_t size);
+void GB_load_rom_from_buffer(GB_gameboy_t *gb, const uint8_t *buffer, size_t size);
     
 int GB_save_battery(GB_gameboy_t *gb, const char *path);
 void GB_load_battery(GB_gameboy_t *gb, const char *path);
@@ -689,6 +702,12 @@ void GB_serial_set_data_bit(GB_gameboy_t *gb, bool data);
     
 void GB_disconnect_serial(GB_gameboy_t *gb);
     
+/* For integration with SFC/SNES emulators */
+void GB_set_joyp_write_callback(GB_gameboy_t *gb, GB_joyp_write_callback_t callback);
+void GB_set_icd_pixel_callback(GB_gameboy_t *gb, GB_icd_pixel_callback_t callback);
+void GB_set_icd_hreset_callback(GB_gameboy_t *gb, GB_icd_hreset_callback_t callback);
+void GB_set_icd_vreset_callback(GB_gameboy_t *gb, GB_icd_vreset_callback_t callback);
+    
 #ifdef GB_INTERNAL
 uint32_t GB_get_clock_rate(GB_gameboy_t *gb);
 #endif

bsnes/gb/Core/joypad.c

@@ -3,6 +3,8 @@
 
 void GB_update_joyp(GB_gameboy_t *gb)
 {
+    if (gb->model & GB_MODEL_SGB_NO_SFC) return;
+    
     uint8_t key_selection = 0;
     uint8_t previous_state = 0;
 
@@ -53,14 +55,27 @@ void GB_update_joyp(GB_gameboy_t *gb)
             break;
     }
     
+    /* Todo: This assumes the keys *always* bounce, which is incorrect when emulating an SGB */
     if (previous_state != (gb->io_registers[GB_IO_JOYP] & 0xF)) {
-        /* The joypad interrupt DOES occur on CGB (Tested on CGB-CPU-06), unlike what some documents say. */
+        /* The joypad interrupt DOES occur on CGB (Tested on CGB-E), unlike what some documents say. */
         gb->io_registers[GB_IO_IF] |= 0x10;
     }
     
     gb->io_registers[GB_IO_JOYP] |= 0xC0;
 }
 
+void GB_icd_set_joyp(GB_gameboy_t *gb, uint8_t value)
+{
+    uint8_t previous_state = gb->io_registers[GB_IO_JOYP] & 0xF;
+    gb->io_registers[GB_IO_JOYP] &= 0xF0;
+    gb->io_registers[GB_IO_JOYP] |= value & 0xF;
+    
+    if (previous_state & ~(gb->io_registers[GB_IO_JOYP] & 0xF)) {
+        gb->io_registers[GB_IO_IF] |= 0x10;
+    }
+
+}
+
 void GB_set_key_state(GB_gameboy_t *gb, GB_key_t index, bool pressed)
 {
     assert(index >= 0 && index < GB_KEY_MAX);

bsnes/gb/Core/joypad.h

@@ -17,6 +17,7 @@ typedef enum {
 
 void GB_set_key_state(GB_gameboy_t *gb, GB_key_t index, bool pressed);
 void GB_set_key_state_for_player(GB_gameboy_t *gb, GB_key_t index, unsigned player, bool pressed);
+void GB_icd_set_joyp(GB_gameboy_t *gb, uint8_t value);
 
 #ifdef GB_INTERNAL
 void GB_update_joyp(GB_gameboy_t *gb);

bsnes/gb/Core/memory.c

@@ -273,7 +273,9 @@ static uint8_t read_high_memory(GB_gameboy_t *gb, uint16_t addr)
             case GB_MODEL_DMG_B:
             case GB_MODEL_SGB_NTSC:
             case GB_MODEL_SGB_PAL:
+            case GB_MODEL_SGB_NO_SFC:
             case GB_MODEL_SGB2:
+            case GB_MODEL_SGB2_NO_SFC:
                 ;
         }
     }
@@ -584,7 +586,9 @@ static void write_high_memory(GB_gameboy_t *gb, uint16_t addr, uint8_t value)
                 case GB_MODEL_DMG_B:
                 case GB_MODEL_SGB_NTSC:
                 case GB_MODEL_SGB_PAL:
+                case GB_MODEL_SGB_NO_SFC:
                 case GB_MODEL_SGB2:
+                case GB_MODEL_SGB2_NO_SFC:
                 case GB_MODEL_CGB_E:
                 case GB_MODEL_AGB:
                     break;
@@ -663,7 +667,7 @@ static void write_high_memory(GB_gameboy_t *gb, uint16_t addr, uint8_t value)
                 /* These are the states when LY changes, let the display routine call GB_STAT_update for use
                    so it correctly handles T-cycle accurate LYC writes */
                 if (!GB_is_cgb(gb)  || (
-                    gb->display_state != 6 &&
+                    gb->display_state != 35 &&
                     gb->display_state != 26 &&
                     gb->display_state != 15 &&
                     gb->display_state != 16)) {
@@ -737,8 +741,8 @@ static void write_high_memory(GB_gameboy_t *gb, uint16_t addr, uint8_t value)
                 return;
 
             case GB_IO_JOYP:
-                GB_sgb_write(gb, value);
                 gb->io_registers[GB_IO_JOYP] = value & 0xF0;
+                GB_sgb_write(gb, value);
                 GB_update_joyp(gb);
                 return;
 

bsnes/gb/Core/save_state.c

@@ -36,7 +36,7 @@ int GB_save_state(GB_gameboy_t *gb, const char *path)
     if (!DUMP_SECTION(gb, f, rtc       )) goto error;
     if (!DUMP_SECTION(gb, f, video     )) goto error;
     
-    if (GB_is_sgb(gb)) {
+    if (GB_is_hle_sgb(gb)) {
         if (!dump_section(f, gb->sgb, sizeof(*gb->sgb))) goto error;
     }
     
@@ -73,7 +73,7 @@ size_t GB_get_save_state_size(GB_gameboy_t *gb)
     + GB_SECTION_SIZE(apu       ) + sizeof(uint32_t)
     + GB_SECTION_SIZE(rtc       ) + sizeof(uint32_t)
     + GB_SECTION_SIZE(video     ) + sizeof(uint32_t)
-    + (GB_is_sgb(gb)? sizeof(*gb->sgb) + sizeof(uint32_t) : 0)
+    + (GB_is_hle_sgb(gb)? sizeof(*gb->sgb) + sizeof(uint32_t) : 0)
     + gb->mbc_ram_size
     + gb->ram_size
     + gb->vram_size;
@@ -105,7 +105,7 @@ void GB_save_state_to_buffer(GB_gameboy_t *gb, uint8_t *buffer)
     DUMP_SECTION(gb, buffer, rtc       );
     DUMP_SECTION(gb, buffer, video     );
     
-    if (GB_is_sgb(gb)) {
+    if (GB_is_hle_sgb(gb)) {
         buffer_dump_section(&buffer, gb->sgb, sizeof(*gb->sgb));
     }
     
@@ -161,8 +161,8 @@ static bool verify_state_compatibility(GB_gameboy_t *gb, GB_gameboy_t *save)
         return false;
     }
     
-    if (GB_is_sgb(gb) != GB_is_sgb(save)) {
-        GB_log(gb, "The save state is %sfor a Super Game Boy. Try changing the emulated model.\n", GB_is_sgb(save)? "" : "not ");
+    if (GB_is_hle_sgb(gb) != GB_is_hle_sgb(save)) {
+        GB_log(gb, "The save state is %sfor a Super Game Boy. Try changing the emulated model.\n", GB_is_hle_sgb(save)? "" : "not ");
         return false;
     }
     
@@ -223,7 +223,7 @@ int GB_load_state(GB_gameboy_t *gb, const char *path)
         goto error;
     }
     
-    if (GB_is_sgb(gb)) {
+    if (GB_is_hle_sgb(gb)) {
         if (!read_section(f, gb->sgb, sizeof(*gb->sgb))) goto error;
     }
     
@@ -334,7 +334,7 @@ int GB_load_state_from_buffer(GB_gameboy_t *gb, const uint8_t *buffer, size_t le
         return -1;
     }
     
-    if (GB_is_sgb(gb)) {
+    if (GB_is_hle_sgb(gb)) {
         if (!buffer_read_section(&buffer, &length, gb->sgb, sizeof(*gb->sgb))) return -1;
     }
     

bsnes/gb/Core/sgb.c

@@ -295,7 +295,14 @@ static void command_ready(GB_gameboy_t *gb)
 
 void GB_sgb_write(GB_gameboy_t *gb, uint8_t value)
 {
+    if (gb->joyp_write_callback) {
+        gb->joyp_write_callback(gb, value);
+    }
     if (!GB_is_sgb(gb)) return;
+    if (!GB_is_hle_sgb(gb)) {
+        /* Notify via callback */
+        return;
+    }
     if (gb->sgb->disable_commands) return;
     if (gb->sgb->command_write_index >= sizeof(gb->sgb->command) * 8) return;
     

bsnes/gb/GNUmakefile

@@ -1,38 +1,24 @@
-processors += sm83
-
-objects += gb-interface gb-system
-objects += gb-memory gb-cartridge
-objects += gb-cpu gb-ppu gb-apu
-
-obj/gb-interface.o: gb/interface/interface.cpp
-obj/gb-system.o:    gb/system/system.cpp
-obj/gb-cartridge.o: gb/cartridge/cartridge.cpp
-obj/gb-memory.o:    gb/memory/memory.cpp
-obj/gb-cpu.o:       gb/cpu/cpu.cpp
-obj/gb-ppu.o:       gb/ppu/ppu.cpp
-obj/gb-apu.o:       gb/apu/apu.cpp
-
 flags += -DGB_INTERNAL -Wno-multichar -Dtypeof=__typeof__
 options += -I../sameboy
 
-objects += sb-apu sb-camera sb-debugger sb-display sb-gb sb-joypad sb-mbc
-objects += sb-memory sb-printer sb-random sb-rewind sb-save_state sb-sgb
-objects += sb-sm83_cpu sb-sm83_disassembler sb-symbol_hash sb-timing
+objects += gb-apu gb-camera gb-debugger gb-display gb-gb gb-joypad gb-mbc
+objects += gb-memory gb-printer gb-random gb-rewind gb-save_state gb-sgb
+objects += gb-sm83_cpu gb-sm83_disassembler gb-symbol_hash gb-timing
 
-obj/sb-apu.o:               ../sameboy/Core/apu.c
-obj/sb-camera.o:            ../sameboy/Core/camera.c
-obj/sb-debugger.o:          ../sameboy/Core/debugger.c
-obj/sb-display.o:           ../sameboy/Core/display.c
-obj/sb-gb.o:                ../sameboy/Core/gb.c
-obj/sb-joypad.o:            ../sameboy/Core/joypad.c
-obj/sb-mbc.o:               ../sameboy/Core/mbc.c
-obj/sb-memory.o:            ../sameboy/Core/memory.c
-obj/sb-printer.o:           ../sameboy/Core/printer.c
-obj/sb-random.o:            ../sameboy/Core/random.c
-obj/sb-rewind.o:            ../sameboy/Core/rewind.c
-obj/sb-save_state.o:        ../sameboy/Core/save_state.c
-obj/sb-sgb.o:               ../sameboy/Core/sgb.c
-obj/sb-sm83_cpu.o:          ../sameboy/Core/sm83_cpu.c
-obj/sb-sm83_disassembler.o: ../sameboy/Core/sm83_disassembler.c
-obj/sb-symbol_hash.o:       ../sameboy/Core/symbol_hash.c
-obj/sb-timing.o:            ../sameboy/Core/timing.c
+obj/gb-apu.o:               gb/Core/apu.c
+obj/gb-camera.o:            gb/Core/camera.c
+obj/gb-debugger.o:          gb/Core/debugger.c
+obj/gb-display.o:           gb/Core/display.c
+obj/gb-gb.o:                gb/Core/gb.c
+obj/gb-joypad.o:            gb/Core/joypad.c
+obj/gb-mbc.o:               gb/Core/mbc.c
+obj/gb-memory.o:            gb/Core/memory.c
+obj/gb-printer.o:           gb/Core/printer.c
+obj/gb-random.o:            gb/Core/random.c
+obj/gb-rewind.o:            gb/Core/rewind.c
+obj/gb-save_state.o:        gb/Core/save_state.c
+obj/gb-sgb.o:               gb/Core/sgb.c
+obj/gb-sm83_cpu.o:          gb/Core/sm83_cpu.c
+obj/gb-sm83_disassembler.o: gb/Core/sm83_disassembler.c
+obj/gb-symbol_hash.o:       gb/Core/symbol_hash.c
+obj/gb-timing.o:            gb/Core/timing.c

bsnes/gb/apu/apu.cpp

@@ -1,106 +0,0 @@
-#include <gb/gb.hpp>
-
-namespace GameBoy {
-
-#include "sequencer.cpp"
-#include "square1.cpp"
-#include "square2.cpp"
-#include "wave.cpp"
-#include "noise.cpp"
-#include "serialization.cpp"
-APU apu;
-
-auto APU::Enter() -> void {
-  while(true) scheduler.synchronize(), apu.main();
-}
-
-auto APU::main() -> void {
-  square1.run();
-  square2.run();
-  wave.run();
-  noise.run();
-  sequencer.run();
-
-  if(!Model::SuperGameBoy()) {
-    stream->sample(float(sequencer.left / 32768.0), float(sequencer.right / 32768.0));
-  } else {
-    float samples[] = {float(sequencer.left / 32768.0), float(sequencer.right / 32768.0)};
-    superGameBoy->audioSample(samples, 2);
-  }
-
-  if(cycle == 0) {  //512hz
-    if(phase == 0 || phase == 2 || phase == 4 || phase == 6) {  //256hz
-      square1.clockLength();
-      square2.clockLength();
-      wave.clockLength();
-      noise.clockLength();
-    }
-    if(phase == 2 || phase == 6) {  //128hz
-      square1.clockSweep();
-    }
-    if(phase == 7) {  //64hz
-      square1.clockEnvelope();
-      square2.clockEnvelope();
-      noise.clockEnvelope();
-    }
-    phase++;
-  }
-  cycle++;
-
-  Thread::step(1);
-  synchronize(cpu);
-}
-
-auto APU::power() -> void {
-  create(Enter, 2 * 1024 * 1024);
-  if(!Model::SuperGameBoy()) {
-    stream = Emulator::audio.createStream(2, frequency());
-    stream->addHighPassFilter(20.0, Emulator::Filter::Order::First);
-    stream->addDCRemovalFilter();
-  }
-  for(uint n = 0xff10; n <= 0xff3f; n++) bus.mmio[n] = this;
-
-  square1.power();
-  square2.power();
-  wave.power();
-  noise.power();
-  sequencer.power();
-  phase = 0;
-  cycle = 0;
-
-  PRNG::PCG prng;
-  for(auto& n : wave.pattern) n = prng.random();
-}
-
-auto APU::readIO(uint16 addr) -> uint8 {
-  if(addr >= 0xff10 && addr <= 0xff14) return square1.read(addr);
-  if(addr >= 0xff15 && addr <= 0xff19) return square2.read(addr);
-  if(addr >= 0xff1a && addr <= 0xff1e) return wave.read(addr);
-  if(addr >= 0xff1f && addr <= 0xff23) return noise.read(addr);
-  if(addr >= 0xff24 && addr <= 0xff26) return sequencer.read(addr);
-  if(addr >= 0xff30 && addr <= 0xff3f) return wave.read(addr);
-  return 0xff;
-}
-
-auto APU::writeIO(uint16 addr, uint8 data) -> void {
-  if(!sequencer.enable) {
-    bool valid = addr == 0xff26;  //NR52
-    if(!Model::GameBoyColor()) {
-      //NRx1 length is writable only on DMG,SGB; not on CGB
-      if(addr == 0xff11) valid = true, data &= 0x3f;  //NR11; duty is not writable (remains 0)
-      if(addr == 0xff16) valid = true, data &= 0x3f;  //NR21; duty is not writable (remains 0)
-      if(addr == 0xff1b) valid = true;  //NR31
-      if(addr == 0xff20) valid = true;  //NR41
-    }
-    if(!valid) return;
-  }
-
-  if(addr >= 0xff10 && addr <= 0xff14) return square1.write(addr, data);
-  if(addr >= 0xff15 && addr <= 0xff19) return square2.write(addr, data);
-  if(addr >= 0xff1a && addr <= 0xff1e) return wave.write(addr, data);
-  if(addr >= 0xff1f && addr <= 0xff23) return noise.write(addr, data);
-  if(addr >= 0xff24 && addr <= 0xff26) return sequencer.write(addr, data);
-  if(addr >= 0xff30 && addr <= 0xff3f) return wave.write(addr, data);
-}
-
-}

bsnes/gb/apu/apu.hpp

@@ -1,171 +0,0 @@
-struct APU : Thread, MMIO {
-  shared_pointer<Emulator::Stream> stream;
-
-  static auto Enter() -> void;
-  auto main() -> void;
-  auto power() -> void;
-
-  auto readIO(uint16 addr) -> uint8;
-  auto writeIO(uint16 addr, uint8 data) -> void;
-
-  auto serialize(serializer&) -> void;
-
-  //square1.cpp
-  struct Square1 {
-    auto dacEnable() const -> bool;
-
-    auto run() -> void;
-    auto sweep(bool update) -> void;
-    auto clockLength() -> void;
-    auto clockSweep() -> void;
-    auto clockEnvelope() -> void;
-    auto read(uint16 addr) -> uint8;
-    auto write(uint16 addr, uint8 data) -> void;
-    auto power(bool initializeLength = true) -> void;
-
-    auto serialize(serializer&) -> void;
-
-    bool enable;
-
-    uint3 sweepFrequency;
-    bool sweepDirection;
-    uint3 sweepShift;
-    bool sweepNegate;
-    uint2 duty;
-    uint length;
-    uint4 envelopeVolume;
-    bool envelopeDirection;
-    uint3 envelopeFrequency;
-    uint11 frequency;
-    bool counter;
-
-    int16 output;
-    bool dutyOutput;
-    uint3 phase;
-    uint period;
-    uint3 envelopePeriod;
-    uint3 sweepPeriod;
-    int frequencyShadow;
-    bool sweepEnable;
-    uint4 volume;
-  } square1;
-
-  //square2.cpp
-  struct Square2 {
-    auto dacEnable() const -> bool;
-
-    auto run() -> void;
-    auto clockLength() -> void;
-    auto clockEnvelope() -> void;
-    auto read(uint16 addr) -> uint8;
-    auto write(uint16 addr, uint8 data) -> void;
-    auto power(bool initializeLength = true) -> void;
-
-    auto serialize(serializer&) -> void;
-
-    bool enable;
-
-    uint2 duty;
-    uint length;
-    uint4 envelopeVolume;
-    bool envelopeDirection;
-    uint3 envelopeFrequency;
-    uint11 frequency;
-    bool counter;
-
-    int16 output;
-    bool dutyOutput;
-    uint3 phase;
-    uint period;
-    uint3 envelopePeriod;
-    uint4 volume;
-  } square2;
-
-  struct Wave {
-    auto getPattern(uint5 offset) const -> uint4;
-
-    auto run() -> void;
-    auto clockLength() -> void;
-    auto read(uint16 addr) -> uint8;
-    auto write(uint16 addr, uint8 data) -> void;
-    auto power(bool initializeLength = true) -> void;
-
-    auto serialize(serializer&) -> void;
-
-    bool enable;
-
-    bool dacEnable;
-    uint2 volume;
-    uint11 frequency;
-    bool counter;
-    uint8 pattern[16];
-
-    int16 output;
-    uint length;
-    uint period;
-    uint5 patternOffset;
-    uint4 patternSample;
-    uint patternHold;
-  } wave;
-
-  struct Noise {
-    auto dacEnable() const -> bool;
-    auto getPeriod() const -> uint;
-
-    auto run() -> void;
-    auto clockLength() -> void;
-    auto clockEnvelope() -> void;
-    auto read(uint16 addr) -> uint8;
-    auto write(uint16 addr, uint8 data) -> void;
-    auto power(bool initializeLength = true) -> void;
-
-    auto serialize(serializer&) -> void;
-
-    bool enable;
-
-    uint4 envelopeVolume;
-    bool envelopeDirection;
-    uint3 envelopeFrequency;
-    uint4 frequency;
-    bool narrow;
-    uint3 divisor;
-    bool counter;
-
-    int16 output;
-    uint length;
-    uint3 envelopePeriod;
-    uint4 volume;
-    uint period;
-    uint15 lfsr;
-  } noise;
-
-  struct Sequencer {
-    auto run() -> void;
-    auto read(uint16 addr) -> uint8;
-    auto write(uint16 addr, uint8 data) -> void;
-    auto power() -> void;
-
-    auto serialize(serializer&) -> void;
-
-    bool leftEnable;
-    uint3 leftVolume;
-    bool rightEnable;
-    uint3 rightVolume;
-
-    struct Channel {
-      bool leftEnable;
-      bool rightEnable;
-    } square1, square2, wave, noise;
-
-    bool enable;
-
-    int16 center;
-    int16 left;
-    int16 right;
-  } sequencer;
-
-  uint3 phase;   //high 3-bits of clock counter
-  uint12 cycle;  //low 12-bits of clock counter
-};
-
-extern APU apu;

bsnes/gb/apu/noise.cpp

@@ -1,140 +0,0 @@
-auto APU::Noise::dacEnable() const -> bool {
-  return (envelopeVolume || envelopeDirection);
-}
-
-auto APU::Noise::getPeriod() const -> uint {
-  static const uint table[] = {4, 8, 16, 24, 32, 40, 48, 56};
-  return table[divisor] << frequency;
-}
-
-auto APU::Noise::run() -> void {
-  if(period && --period == 0) {
-    period = getPeriod();
-    if(frequency < 14) {
-      bool bit = (lfsr ^ (lfsr >> 1)) & 1;
-      lfsr = (lfsr >> 1) ^ (bit << (narrow ? 6 : 14));
-    }
-  }
-
-  uint4 sample = lfsr & 1 ? 0 : (uint)volume;
-  if(!enable) sample = 0;
-
-  output = sample;
-}
-
-auto APU::Noise::clockLength() -> void {
-  if(counter) {
-    if(length && --length == 0) enable = false;
-  }
-}
-
-auto APU::Noise::clockEnvelope() -> void {
-  if(enable && envelopeFrequency && --envelopePeriod == 0) {
-    envelopePeriod = envelopeFrequency ? (uint)envelopeFrequency : 8;
-    if(envelopeDirection == 0 && volume >  0) volume--;
-    if(envelopeDirection == 1 && volume < 15) volume++;
-  }
-}
-
-auto APU::Noise::read(uint16 addr) -> uint8 {
-  if(addr == 0xff1f) {  //NR40
-    return 0xff;
-  }
-
-  if(addr == 0xff20) {  //NR41
-    return 0xff;
-  }
-
-  if(addr == 0xff21) {  //NR42
-    return envelopeVolume << 4 | envelopeDirection << 3 | envelopeFrequency;
-  }
-
-  if(addr == 0xff22) {  //NR43
-    return frequency << 4 | narrow << 3 | divisor;
-  }
-
-  if(addr == 0xff23) {  //NR44
-    return 0x80 | counter << 6 | 0x3f;
-  }
-
-  return 0xff;
-}
-
-auto APU::Noise::write(uint16 addr, uint8 data) -> void {
-  if(addr == 0xff20) {  //NR41
-    length = 64 - bits(data,0-5);
-  }
-
-  if(addr == 0xff21) {  //NR42
-    envelopeVolume    = bits(data,4-7);
-    envelopeDirection = bit1(data,3);
-    envelopeFrequency = bits(data,0-2);
-    if(!dacEnable()) enable = false;
-  }
-
-  if(addr == 0xff22) {  //NR43
-    frequency = bits(data,4-7);
-    narrow    = bit1(data,3);
-    divisor   = bits(data,0-2);
-    period = getPeriod();
-  }
-
-  if(addr == 0xff23) {  //NR44
-    if(bit1(apu.phase,0) && !counter && bit1(data,6)) {
-      if(length && --length == 0) enable = false;
-    }
-
-    counter = bit1(data,6);
-
-    if(bit1(data,7)) {
-      enable = dacEnable();
-      lfsr = -1;
-      envelopePeriod = envelopeFrequency ? (uint)envelopeFrequency : 8;
-      volume = envelopeVolume;
-
-      if(!length) {
-        length = 64;
-        if(bit1(apu.phase,0) && counter) length--;
-      }
-    }
-  }
-}
-
-auto APU::Noise::power(bool initializeLength) -> void {
-  enable = 0;
-
-  envelopeVolume = 0;
-  envelopeDirection = 0;
-  envelopeFrequency = 0;
-  frequency = 0;
-  narrow = 0;
-  divisor = 0;
-  counter = 0;
-
-  output = 0;
-  envelopePeriod = 0;
-  volume = 0;
-  period = 0;
-  lfsr = 0;
-
-  if(initializeLength) length = 64;
-}
-
-auto APU::Noise::serialize(serializer& s) -> void {
-  s.integer(enable);
-
-  s.integer(envelopeVolume);
-  s.integer(envelopeDirection);
-  s.integer(envelopeFrequency);
-  s.integer(frequency);
-  s.integer(narrow);
-  s.integer(divisor);
-  s.integer(counter);
-
-  s.integer(output);
-  s.integer(length);
-  s.integer(envelopePeriod);
-  s.integer(volume);
-  s.integer(period);
-  s.integer(lfsr);
-}

bsnes/gb/apu/sequencer.cpp

@@ -1,142 +0,0 @@
-auto APU::Sequencer::run() -> void {
-  if(enable == false) {
-    center = 0;
-    left   = 0;
-    right  = 0;
-    return;
-  }
-
-  int sample = 0;
-  sample += apu.square1.output;
-  sample += apu.square2.output;
-  sample +=    apu.wave.output;
-  sample +=   apu.noise.output;
-  center = (sample * 512) - 16384;
-
-  sample = 0;
-  if(square1.leftEnable) sample += apu.square1.output;
-  if(square2.leftEnable) sample += apu.square2.output;
-  if(   wave.leftEnable) sample +=    apu.wave.output;
-  if(  noise.leftEnable) sample +=   apu.noise.output;
-  sample = (sample * 512) - 16384;
-  sample = (sample * (leftVolume + 1)) / 8;
-  left = sample;
-
-  sample = 0;
-  if(square1.rightEnable) sample += apu.square1.output;
-  if(square2.rightEnable) sample += apu.square2.output;
-  if(   wave.rightEnable) sample +=    apu.wave.output;
-  if(  noise.rightEnable) sample +=   apu.noise.output;
-  sample = (sample * 512) - 16384;
-  sample = (sample * (rightVolume + 1)) / 8;
-  right = sample;
-
-  //reduce audio volume
-  center >>= 1;
-  left   >>= 1;
-  right  >>= 1;
-}
-
-auto APU::Sequencer::read(uint16 addr) -> uint8 {
-  if(addr == 0xff24) {  //NR50
-    return leftEnable << 7 | leftVolume << 4 | rightEnable << 3 | rightVolume;
-  }
-
-  if(addr == 0xff25) {  //NR51
-    return noise.leftEnable    << 7
-         | wave.leftEnable     << 6
-         | square2.leftEnable  << 5
-         | square1.leftEnable  << 4
-         | noise.rightEnable   << 3
-         | wave.rightEnable    << 2
-         | square2.rightEnable << 1
-         | square1.rightEnable << 0;
-  }
-
-  if(addr == 0xff26) {  //NR52
-    return enable << 7 | 0x70
-         | apu.noise.enable   << 3
-         | apu.wave.enable    << 2
-         | apu.square2.enable << 1
-         | apu.square1.enable << 0;
-  }
-
-  return 0xff;
-}
-
-auto APU::Sequencer::write(uint16 addr, uint8 data) -> void {
-  if(addr == 0xff24) {  //NR50
-    leftEnable  = bit1(data,7);
-    leftVolume  = bits(data,4-6);
-    rightEnable = bit1(data,3);
-    rightVolume = bits(data,0-2);
-  }
-
-  if(addr == 0xff25) {  //NR51
-    noise.leftEnable    = bit1(data,7);
-    wave.leftEnable     = bit1(data,6);
-    square2.leftEnable  = bit1(data,5);
-    square1.leftEnable  = bit1(data,4);
-    noise.rightEnable   = bit1(data,3);
-    wave.rightEnable    = bit1(data,2);
-    square2.rightEnable = bit1(data,1);
-    square1.rightEnable = bit1(data,0);
-  }
-
-  if(addr == 0xff26) {  //NR52
-    if(enable != bit1(data,7)) {
-      enable = bit1(data,7);
-
-      if(!enable) {
-        //power(bool) resets length counters when true (eg for CGB only)
-        apu.square1.power(Model::GameBoyColor());
-        apu.square2.power(Model::GameBoyColor());
-        apu.wave.power(Model::GameBoyColor());
-        apu.noise.power(Model::GameBoyColor());
-        power();
-      } else {
-        apu.phase = 0;
-      }
-    }
-  }
-}
-
-auto APU::Sequencer::power() -> void {
-  leftEnable = 0;
-  leftVolume = 0;
-  rightEnable = 0;
-  rightVolume = 0;
-  noise.leftEnable = 0;
-  wave.leftEnable = 0;
-  square2.leftEnable = 0;
-  square1.leftEnable = 0;
-  noise.rightEnable = 0;
-  wave.rightEnable = 0;
-  square2.rightEnable = 0;
-  square1.rightEnable = 0;
-  enable = 0;
-
-  center = 0;
-  left   = 0;
-  right  = 0;
-}
-
-auto APU::Sequencer::serialize(serializer& s) -> void {
-  s.integer(leftEnable);
-  s.integer(leftVolume);
-  s.integer(rightEnable);
-  s.integer(rightVolume);
-  s.integer(noise.leftEnable);
-  s.integer(wave.leftEnable);
-  s.integer(square2.leftEnable);
-  s.integer(square1.leftEnable);
-  s.integer(noise.rightEnable);
-  s.integer(wave.rightEnable);
-  s.integer(square2.rightEnable);
-  s.integer(square1.rightEnable);
-  s.integer(enable);
-
-  s.integer(center);
-  s.integer(left);
-  s.integer(right);
-}

bsnes/gb/apu/serialization.cpp

@@ -1,12 +0,0 @@
-auto APU::serialize(serializer& s) -> void {
-  Thread::serialize(s);
-
-  square1.serialize(s);
-  square2.serialize(s);
-  wave.serialize(s);
-  noise.serialize(s);
-  sequencer.serialize(s);
-
-  s.integer(phase);
-  s.integer(cycle);
-}

bsnes/gb/apu/square1.cpp

@@ -1,190 +0,0 @@
-auto APU::Square1::dacEnable() const -> bool {
-  return (envelopeVolume || envelopeDirection);
-}
-
-auto APU::Square1::run() -> void {
-  if(period && --period == 0) {
-    period = 2 * (2048 - frequency);
-    phase++;
-    switch(duty) {
-    case 0: dutyOutput = (phase == 6); break;  //______-_
-    case 1: dutyOutput = (phase >= 6); break;  //______--
-    case 2: dutyOutput = (phase >= 4); break;  //____----
-    case 3: dutyOutput = (phase <= 5); break;  //------__
-    }
-  }
-
-  uint4 sample = dutyOutput ? (uint)volume : 0;
-  if(!enable) sample = 0;
-
-  output = sample;
-}
-
-auto APU::Square1::sweep(bool update) -> void {
-  if(!sweepEnable) return;
-
-  sweepNegate = sweepDirection;
-  uint delta = frequencyShadow >> sweepShift;
-  int freq = frequencyShadow + (sweepNegate ? -delta : delta);
-
-  if(freq > 2047) {
-    enable = false;
-  } else if(sweepShift && update) {
-    frequencyShadow = freq;
-    frequency = freq & 2047;
-    period = 2 * (2048 - frequency);
-  }
-}
-
-auto APU::Square1::clockLength() -> void {
-  if(counter) {
-    if(length && --length == 0) enable = false;
-  }
-}
-
-auto APU::Square1::clockSweep() -> void {
-  if(--sweepPeriod == 0) {
-    sweepPeriod = sweepFrequency ? (uint)sweepFrequency : 8;
-    if(sweepEnable && sweepFrequency) {
-      sweep(1);
-      sweep(0);
-    }
-  }
-}
-
-auto APU::Square1::clockEnvelope() -> void {
-  if(enable && envelopeFrequency && --envelopePeriod == 0) {
-    envelopePeriod = envelopeFrequency ? (uint)envelopeFrequency : 8;
-    if(envelopeDirection == 0 && volume >  0) volume--;
-    if(envelopeDirection == 1 && volume < 15) volume++;
-  }
-}
-
-auto APU::Square1::read(uint16 addr) -> uint8 {
-  if(addr == 0xff10) {  //NR10
-    return 0x80 | sweepFrequency << 4 | sweepDirection << 3 | sweepShift;
-  }
-
-  if(addr == 0xff11) {  //NR11
-    return duty << 6 | 0x3f;
-  }
-
-  if(addr == 0xff12) {  //NR12
-    return envelopeVolume << 4 | envelopeDirection << 3 | envelopeFrequency;
-  }
-
-  if(addr == 0xff13) {  //NR13
-    return 0xff;
-  }
-
-  if(addr == 0xff14) {  //NR14
-    return 0x80 | counter << 6 | 0x3f;
-  }
-
-  return 0xff;
-}
-
-auto APU::Square1::write(uint16 addr, uint8 data) -> void {
-  if(addr == 0xff10) {  //NR10
-    if(sweepEnable && sweepNegate && !bit1(data,3)) enable = false;
-    sweepFrequency = bits(data,4-6);
-    sweepDirection = bit1(data,3);
-    sweepShift     = bits(data,0-2);
-  }
-
-  if(addr == 0xff11) {  //NR11
-    duty = bits(data,6-7);
-    length = 64 - bits(data,0-5);
-  }
-
-  if(addr == 0xff12) {  //NR12
-    envelopeVolume    = bits(data,4-7);
-    envelopeDirection = bit1(data,3);
-    envelopeFrequency = bits(data,0-2);
-    if(!dacEnable()) enable = false;
-  }
-
-  if(addr == 0xff13) {  //NR13
-    bits(frequency,0-7) = data;
-  }
-
-  if(addr == 0xff14) {  //NR14
-    if(bit1(apu.phase,0) && !counter && bit1(data,6)) {
-      if(length && --length == 0) enable = false;
-    }
-
-    counter = bit1(data,6);
-    bits(frequency,8-10) = (uint)bits(data,0-2);
-
-    if(bit1(data,7)) {
-      enable = dacEnable();
-      period = 2 * (2048 - frequency);
-      envelopePeriod = envelopeFrequency ? (uint)envelopeFrequency : 8;
-      volume = envelopeVolume;
-
-      if(!length) {
-        length = 64;
-        if(bit1(apu.phase,0) && counter) length--;
-      }
-
-      frequencyShadow = frequency;
-      sweepNegate = false;
-      sweepPeriod = sweepFrequency ? (uint)sweepFrequency : 8;
-      sweepEnable = sweepPeriod || sweepShift;
-      if(sweepShift) sweep(0);
-    }
-  }
-}
-
-auto APU::Square1::power(bool initializeLength) -> void {
-  enable = 0;
-
-  sweepFrequency = 0;
-  sweepDirection = 0;
-  sweepShift = 0;
-  sweepNegate = 0;
-  duty = 0;
-  envelopeVolume = 0;
-  envelopeDirection = 0;
-  envelopeFrequency = 0;
-  frequency = 0;
-  counter = 0;
-
-  output = 0;
-  dutyOutput = 0;
-  phase = 0;
-  period = 0;
-  envelopePeriod = 0;
-  sweepPeriod = 0;
-  frequencyShadow = 0;
-  sweepEnable = 0;
-  volume = 0;
-
-  if(initializeLength) length = 64;
-}
-
-auto APU::Square1::serialize(serializer& s) -> void {
-  s.integer(enable);
-
-  s.integer(sweepFrequency);
-  s.integer(sweepDirection);
-  s.integer(sweepShift);
-  s.integer(sweepNegate);
-  s.integer(duty);
-  s.integer(length);
-  s.integer(envelopeVolume);
-  s.integer(envelopeDirection);
-  s.integer(envelopeFrequency);
-  s.integer(frequency);
-  s.integer(counter);
-
-  s.integer(output);
-  s.integer(dutyOutput);
-  s.integer(phase);
-  s.integer(period);
-  s.integer(envelopePeriod);
-  s.integer(sweepPeriod);
-  s.integer(frequencyShadow);
-  s.integer(sweepEnable);
-  s.integer(volume);
-}

bsnes/gb/apu/square2.cpp

@@ -1,137 +0,0 @@
-auto APU::Square2::dacEnable() const -> bool {
-  return (envelopeVolume || envelopeDirection);
-}
-
-auto APU::Square2::run() -> void {
-  if(period && --period == 0) {
-    period = 2 * (2048 - frequency);
-    phase++;
-    switch(duty) {
-    case 0: dutyOutput = (phase == 6); break;  //______-_
-    case 1: dutyOutput = (phase >= 6); break;  //______--
-    case 2: dutyOutput = (phase >= 4); break;  //____----
-    case 3: dutyOutput = (phase <= 5); break;  //------__
-    }
-  }
-
-  uint4 sample = dutyOutput ? (uint)volume : 0;
-  if(!enable) sample = 0;
-
-  output = sample;
-}
-
-auto APU::Square2::clockLength() -> void {
-  if(counter) {
-    if(length && --length == 0) enable = false;
-  }
-}
-
-auto APU::Square2::clockEnvelope() -> void {
-  if(enable && envelopeFrequency && --envelopePeriod == 0) {
-    envelopePeriod = envelopeFrequency ? (uint)envelopeFrequency : 8;
-    if(envelopeDirection == 0 && volume >  0) volume--;
-    if(envelopeDirection == 1 && volume < 15) volume++;
-  }
-}
-
-auto APU::Square2::read(uint16 addr) -> uint8 {
-  if(addr == 0xff15) {  //NR20
-    return 0xff;
-  }
-
-  if(addr == 0xff16) {  //NR21
-    return duty << 6 | 0x3f;
-  }
-
-  if(addr == 0xff17) {  //NR22
-    return envelopeVolume << 4 | envelopeDirection << 3 | envelopeFrequency;
-  }
-
-  if(addr == 0xff18) {  //NR23
-    return 0xff;
-  }
-
-  if(addr == 0xff19) {  //NR24
-    return 0x80 | counter << 6 | 0x3f;
-  }
-
-  return 0xff;
-}
-
-auto APU::Square2::write(uint16 addr, uint8 data) -> void {
-  if(addr == 0xff16) {  //NR21
-    duty = bits(data,6-7);
-    length = 64 - bits(data,0-5);
-  }
-
-  if(addr == 0xff17) {  //NR22
-    envelopeVolume    = bits(data,4-7);
-    envelopeDirection = bit1(data,3);
-    envelopeFrequency = bits(data,0-2);
-    if(!dacEnable()) enable = false;
-  }
-
-  if(addr == 0xff18) {  //NR23
-    bits(frequency,0-7) = data;
-  }
-
-  if(addr == 0xff19) {  //NR24
-    if(bit1(apu.phase,0) && !counter && bit1(data,6)) {
-      if(length && --length == 0) enable = false;
-    }
-
-    counter = bit1(data,6);
-    bits(frequency,8-10) = (uint)bits(data,0-2);
-
-    if(bit1(data,7)) {
-      enable = dacEnable();
-      period = 2 * (2048 - frequency);
-      envelopePeriod = envelopeFrequency ? (uint)envelopeFrequency : 8;
-      volume = envelopeVolume;
-
-      if(!length) {
-        length = 64;
-        if(bit1(apu.phase,0) && counter) length--;
-      }
-    }
-  }
-}
-
-auto APU::Square2::power(bool initializeLength) -> void {
-  enable = 0;
-
-  duty = 0;
-  envelopeVolume = 0;
-  envelopeDirection = 0;
-  envelopeFrequency = 0;
-  frequency = 0;
-  counter = 0;
-
-  output = 0;
-  dutyOutput = 0;
-  phase = 0;
-  period = 0;
-  envelopePeriod = 0;
-  volume = 0;
-
-  if(initializeLength) length = 64;
-}
-
-auto APU::Square2::serialize(serializer& s) -> void {
-  s.integer(enable);
-
-  s.integer(duty);
-  s.integer(length);
-  s.integer(envelopeVolume);
-  s.integer(envelopeDirection);
-  s.integer(envelopeFrequency);
-  s.integer(frequency);
-  s.integer(counter);
-
-  s.integer(output);
-  s.integer(dutyOutput);
-  s.integer(phase);
-  s.integer(period);
-  s.integer(envelopePeriod);
-  s.integer(volume);
-}

bsnes/gb/apu/wave.cpp

@@ -1,156 +0,0 @@
-auto APU::Wave::getPattern(uint5 offset) const -> uint4 {
-  return pattern[offset >> 1] >> (offset & 1 ? 0 : 4);
-}
-
-auto APU::Wave::run() -> void {
-  if(patternHold) patternHold--;
-
-  if(period && --period == 0) {
-    period = 1 * (2048 - frequency);
-    patternSample = getPattern(++patternOffset);
-    patternHold = 1;
-  }
-
-  static const uint shift[] = {4, 0, 1, 2};  //0%, 100%, 50%, 25%
-  uint4 sample = patternSample >> shift[volume];
-  if(!enable) sample = 0;
-
-  output = sample;
-}
-
-auto APU::Wave::clockLength() -> void {
-  if(counter) {
-    if(length && --length == 0) enable = false;
-  }
-}
-
-auto APU::Wave::read(uint16 addr) -> uint8 {
-  if(addr == 0xff1a) {  //NR30
-    return dacEnable << 7 | 0x7f;
-  }
-
-  if(addr == 0xff1b) {  //NR31
-    return 0xff;
-  }
-
-  if(addr == 0xff1c) {  //NR32
-    return 0x80 | volume << 5 | 0x1f;
-  }
-
-  if(addr == 0xff1d) {  //NR33
-    return 0xff;
-  }
-
-  if(addr == 0xff1e) {  //NR34
-    return 0x80 | counter << 6 | 0x3f;
-  }
-
-  if(addr >= 0xff30 && addr <= 0xff3f) {
-    if(enable) {
-      if(!Model::GameBoyColor() && !patternHold) return 0xff;
-      return pattern[patternOffset >> 1];
-    } else {
-      return pattern[addr & 15];
-    }
-  }
-
-  return 0xff;
-}
-
-auto APU::Wave::write(uint16 addr, uint8 data) -> void {
-  if(addr == 0xff1a) {  //NR30
-    dacEnable = bit1(data,7);
-    if(!dacEnable) enable = false;
-  }
-
-  if(addr == 0xff1b) {  //NR31
-    length = 256 - data;
-  }
-
-  if(addr == 0xff1c) {  //NR32
-    volume = bits(data,5-6);
-  }
-
-  if(addr == 0xff1d) {  //NR33
-    bits(frequency,0-7) = data;
-  }
-
-  if(addr == 0xff1e) {  //NR34
-    if(bit1(apu.phase,0) && !counter && bit1(data,6)) {
-      if(length && --length == 0) enable = false;
-    }
-
-    counter = bit1(data,6);
-    bits(frequency,8-10) = (uint)bits(data,0-2);
-
-    if(bit1(data,7)) {
-      if(!Model::GameBoyColor() && patternHold) {
-        //DMG,SGB trigger while channel is being read corrupts wave RAM
-        if((patternOffset >> 1) <= 3) {
-          //if current pattern is with 0-3; only byte 0 is corrupted
-          pattern[0] = pattern[patternOffset >> 1];
-        } else {
-          //if current pattern is within 4-15; pattern&~3 is copied to pattern[0-3]
-          pattern[0] = pattern[((patternOffset >> 1) & ~3) + 0];
-          pattern[1] = pattern[((patternOffset >> 1) & ~3) + 1];
-          pattern[2] = pattern[((patternOffset >> 1) & ~3) + 2];
-          pattern[3] = pattern[((patternOffset >> 1) & ~3) + 3];
-        }
-      }
-
-      enable = dacEnable;
-      period = 1 * (2048 - frequency);
-      patternOffset = 0;
-      patternSample = 0;
-      patternHold = 0;
-
-      if(!length) {
-        length = 256;
-        if(bit1(apu.phase,0) && counter) length--;
-      }
-    }
-  }
-
-  if(addr >= 0xff30 && addr <= 0xff3f) {
-    if(enable) {
-      if(!Model::GameBoyColor() && !patternHold) return;
-      pattern[patternOffset >> 1] = data;
-    } else {
-      pattern[addr & 15] = data;
-    }
-  }
-}
-
-auto APU::Wave::power(bool initializeLength) -> void {
-  enable = 0;
-
-  dacEnable = 0;
-  volume = 0;
-  frequency = 0;
-  counter = 0;
-
-  output = 0;
-  period = 0;
-  patternOffset = 0;
-  patternSample = 0;
-  patternHold = 0;
-
-  if(initializeLength) length = 256;
-}
-
-auto APU::Wave::serialize(serializer& s) -> void {
-  s.integer(enable);
-
-  s.integer(dacEnable);
-  s.integer(volume);
-  s.integer(frequency);
-  s.integer(counter);
-  s.array(pattern);
-
-  s.integer(output);
-  s.integer(length);
-  s.integer(period);
-  s.integer(patternOffset);
-  s.integer(patternSample);
-  s.integer(patternHold);
-}

bsnes/gb/cartridge/cartridge.cpp

@@ -1,206 +0,0 @@
-#include <gb/gb.hpp>
-
-namespace GameBoy {
-
-Cartridge cartridge;
-#include "mbc0/mbc0.cpp"
-#include "mbc1/mbc1.cpp"
-#include "mbc1m/mbc1m.cpp"
-#include "mbc2/mbc2.cpp"
-#include "mbc3/mbc3.cpp"
-#include "mbc5/mbc5.cpp"
-#include "mbc6/mbc6.cpp"
-#include "mbc7/mbc7.cpp"
-#include "mmm01/mmm01.cpp"
-#include "huc1/huc1.cpp"
-#include "huc3/huc3.cpp"
-#include "tama/tama.cpp"
-#include "serialization.cpp"
-
-auto Cartridge::Enter() -> void {
-  while(true) scheduler.synchronize(), cartridge.main();
-}
-
-auto Cartridge::main() -> void {
-  mapper->main();
-}
-
-auto Cartridge::step(uint clocks) -> void {
-  Thread::step(clocks);
-  synchronize(cpu);
-}
-
-auto Cartridge::load() -> bool {
-  information = {};
-  rom = {};
-  ram = {};
-  rtc = {};
-  mapper = &mbc0;
-  accelerometer = false;
-  rumble = false;
-
-  if(Model::GameBoy()) {
-    if(auto loaded = platform->load(ID::GameBoy, "Game Boy", "gb")) {
-      information.pathID = loaded.pathID;
-    } else return false;
-  }
-
-  if(Model::GameBoyColor()) {
-    if(auto loaded = platform->load(ID::GameBoyColor, "Game Boy Color", "gbc")) {
-      information.pathID = loaded.pathID;
-    } else return false;
-  }
-
-  if(Model::SuperGameBoy()) {
-    if(auto loaded = platform->load(ID::SuperGameBoy, "Game Boy", "gb")) {
-      information.pathID = loaded.pathID;
-    } else return false;
-  }
-
-  if(auto fp = platform->open(pathID(), "manifest.bml", File::Read, File::Required)) {
-    information.manifest = fp->reads();
-  } else return false;
-
-  auto document = BML::unserialize(information.manifest);
-  information.title = document["game/label"].text();
-
-  auto mapperID = document["game/board"].text();
-  if(mapperID == "MBC0" ) mapper = &mbc0;
-  if(mapperID == "MBC1" ) mapper = &mbc1;
-  if(mapperID == "MBC1M") mapper = &mbc1m;
-  if(mapperID == "MBC2" ) mapper = &mbc2;
-  if(mapperID == "MBC3" ) mapper = &mbc3;
-  if(mapperID == "MBC5" ) mapper = &mbc5;
-  if(mapperID == "MBC6" ) mapper = &mbc6;
-  if(mapperID == "MBC7" ) mapper = &mbc7;
-  if(mapperID == "MMM01") mapper = &mmm01;
-  if(mapperID == "HuC1" ) mapper = &huc1;
-  if(mapperID == "HuC3" ) mapper = &huc3;
-  if(mapperID == "TAMA" ) mapper = &tama;
-
-  accelerometer = (bool)document["game/board/accelerometer"];
-  rumble = (bool)document["game/board/rumble"];
-
-  if(auto memory = Emulator::Game::Memory{document["game/board/memory(type=ROM,content=Program)"]}) {
-    rom.size = max(0x4000, (uint)memory.size);
-    rom.data = memory::allocate<uint8>(rom.size, 0xff);
-    if(auto fp = platform->open(pathID(), memory.name(), File::Read, File::Required)) {
-      fp->read(rom.data, min(rom.size, fp->size()));
-    }
-  }
-
-  if(auto memory = Emulator::Game::Memory{document["game/board/memory(type=RAM,content=Save)"]}) {
-    ram.size = memory.size;
-    ram.data = memory::allocate<uint8>(ram.size, 0xff);
-    if(memory.nonVolatile) {
-      if(auto fp = platform->open(pathID(), memory.name(), File::Read, File::Optional)) {
-        fp->read(ram.data, min(ram.size, fp->size()));
-      }
-    }
-  }
-
-  if(auto memory = Emulator::Game::Memory{document["game/board/memory(type=RTC,content=Time)"]}) {
-    rtc.size = memory.size;
-    rtc.data = memory::allocate<uint8>(rtc.size, 0xff);
-    if(memory.nonVolatile) {
-      if(auto fp = platform->open(pathID(), memory.name(), File::Read, File::Optional)) {
-        fp->read(rtc.data, min(rtc.size, fp->size()));
-      }
-    }
-  }
-
-  information.sha256 = Hash::SHA256({rom.data, rom.size}).digest();
-  mapper->load(document);
-  return true;
-}
-
-auto Cartridge::save() -> void {
-  auto document = BML::unserialize(information.manifest);
-
-  if(auto memory = Emulator::Game::Memory{document["game/board/memory(type=RAM,content=Save)"]}) {
-    if(memory.nonVolatile) {
-      if(auto fp = platform->open(pathID(), memory.name(), File::Write)) {
-        fp->write(ram.data, ram.size);
-      }
-    }
-  }
-
-  if(auto memory = Emulator::Game::Memory{document["game/board/memory(type=RTC,content=Time)"]}) {
-    if(memory.nonVolatile) {
-      if(auto fp = platform->open(pathID(), memory.name(), File::Write)) {
-        fp->write(rtc.data, rtc.size);
-      }
-    }
-  }
-
-  mapper->save(document);
-}
-
-auto Cartridge::unload() -> void {
-  delete[] rom.data;
-  delete[] ram.data;
-  delete[] rtc.data;
-  rom = {};
-  ram = {};
-  rtc = {};
-}
-
-auto Cartridge::readIO(uint16 addr) -> uint8 {
-  if(addr == 0xff50) return 0xff;
-
-  if(bootromEnable) {
-    const uint8* data = nullptr;
-    if(Model::GameBoy()) data = system.bootROM.dmg;
-    if(Model::GameBoyColor()) data = system.bootROM.cgb;
-    if(Model::SuperGameBoy()) data = system.bootROM.sgb;
-    if(addr >= 0x0000 && addr <= 0x00ff) return data[addr];
-    if(addr >= 0x0200 && addr <= 0x08ff && Model::GameBoyColor()) return data[addr - 0x100];
-  }
-
-  return mapper->read(addr);
-}
-
-auto Cartridge::writeIO(uint16 addr, uint8 data) -> void {
-  if(bootromEnable && addr == 0xff50) {
-    bootromEnable = false;
-    return;
-  }
-
-  mapper->write(addr, data);
-}
-
-auto Cartridge::power() -> void {
-  create(Enter, 4 * 1024 * 1024);
-
-  for(uint n = 0x0000; n <= 0x7fff; n++) bus.mmio[n] = this;
-  for(uint n = 0xa000; n <= 0xbfff; n++) bus.mmio[n] = this;
-  bus.mmio[0xff50] = this;
-
-  bootromEnable = true;
-
-  mapper->power();
-}
-
-auto Cartridge::second() -> void {
-  mapper->second();
-}
-
-auto Cartridge::Memory::read(uint address) const -> uint8 {
-  if(!size) return 0xff;
-  if(address >= size) address %= size;
-  return data[address];
-}
-
-auto Cartridge::Memory::write(uint address, uint8 byte) -> void {
-  if(!size) return;
-  if(address >= size) address %= size;
-  data[address] = byte;
-}
-
-//
-
-auto Cartridge::Mapper::main() -> void {
-  cartridge.step(cartridge.frequency());
-}
-
-}

bsnes/gb/cartridge/cartridge.hpp

@@ -1,68 +0,0 @@
-struct Cartridge : Thread, MMIO {
-  auto pathID() const -> uint { return information.pathID; }
-  auto hash() const -> string { return information.sha256; }
-  auto manifest() const -> string { return information.manifest; }
-  auto title() const -> string { return information.title; }
-
-  static auto Enter() -> void;
-  auto load() -> bool;
-  auto save() -> void;
-  auto unload() -> void;
-
-  auto readIO(uint16 address) -> uint8;
-  auto writeIO(uint16 address, uint8 data) -> void;
-
-  auto main() -> void;
-  auto step(uint clocks) -> void;
-  auto power() -> void;
-  auto second() -> void;
-
-  auto serialize(serializer&) -> void;
-
-  struct Information {
-    uint pathID = 0;
-    string sha256;
-    string manifest;
-    string title;
-  } information;
-
-  struct Memory {
-    auto read(uint address) const -> uint8;
-    auto write(uint address, uint8 data) -> void;
-
-    uint8* data = nullptr;
-    uint size = 0;
-  } rom, ram, rtc;
-
-  bool bootromEnable = true;
-
-private:
-  struct Mapper {
-    virtual auto load(Markup::Node document) -> void {}
-    virtual auto save(Markup::Node document) -> void {}
-    virtual auto main() -> void;
-    virtual auto second() -> void {}
-    virtual auto read(uint16 address) -> uint8 = 0;
-    virtual auto write(uint16 address, uint8 data) -> void = 0;
-    virtual auto power() -> void = 0;
-    virtual auto serialize(serializer&) -> void = 0;
-  };
-  Mapper* mapper = nullptr;
-  bool accelerometer = false;
-  bool rumble = false;
-
-  #include "mbc0/mbc0.hpp"
-  #include "mbc1/mbc1.hpp"
-  #include "mbc1m/mbc1m.hpp"
-  #include "mbc2/mbc2.hpp"
-  #include "mbc3/mbc3.hpp"
-  #include "mbc5/mbc5.hpp"
-  #include "mbc6/mbc6.hpp"
-  #include "mbc7/mbc7.hpp"
-  #include "mmm01/mmm01.hpp"
-  #include "huc1/huc1.hpp"
-  #include "huc3/huc3.hpp"
-  #include "tama/tama.hpp"
-};
-
-extern Cartridge cartridge;

bsnes/gb/cartridge/huc1/huc1.cpp

@@ -1,54 +0,0 @@
-auto Cartridge::HuC1::read(uint16 address) -> uint8 {
-  if((address & 0xc000) == 0x0000) {  //$0000-3fff
-    return cartridge.rom.read(bits(address,0-13));
-  }
-
-  if((address & 0xc000) == 0x4000) {  //$4000-7fff
-    return cartridge.rom.read(io.rom.bank << 14 | bits(address,0-13));
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    return cartridge.ram.read(io.ram.bank << 13 | bits(address,0-12));
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::HuC1::write(uint16 address, uint8 data) -> void {
-  if((address & 0xe000) == 0x0000) {  //$0000-1fff
-    io.ram.writable = bits(data,0-3) == 0x0a;
-    return;
-  }
-
-  if((address & 0xe000) == 0x2000) {  //$2000-3fff
-    io.rom.bank = data;
-    if(!io.rom.bank) io.rom.bank = 0x01;
-    return;
-  }
-
-  if((address & 0xe000) == 0x4000) {  //$4000-5fff
-    io.ram.bank = data;
-    return;
-  }
-
-  if((address & 0xe000) == 0x6000) {  //$6000-7fff
-    io.model = data & 1;
-    return;
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    if(!io.ram.writable) return;
-    return cartridge.ram.write(io.ram.bank << 13 | bits(address,0-12), data);
-  }
-}
-
-auto Cartridge::HuC1::power() -> void {
-  io = {};
-}
-
-auto Cartridge::HuC1::serialize(serializer& s) -> void {
-  s.integer(io.model);
-  s.integer(io.rom.bank);
-  s.integer(io.ram.writable);
-  s.integer(io.ram.bank);
-}

bsnes/gb/cartridge/huc1/huc1.hpp

@@ -1,17 +0,0 @@
-struct HuC1 : Mapper {
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer&) -> void;
-
-  struct IO {
-    uint1 model;
-    struct ROM {
-      uint8 bank = 0x01;
-    } rom;
-    struct RAM {
-      uint1 writable;
-      uint8 bank;
-    } ram;
-  } io;
-} huc1;

bsnes/gb/cartridge/huc3/huc3.cpp

@@ -1,48 +0,0 @@
-auto Cartridge::HuC3::read(uint16 address) -> uint8 {
-  if((address & 0xc000) == 0x0000) {  //$0000-3fff
-    return cartridge.rom.read(bits(address,0-13));
-  }
-
-  if((address & 0xc000) == 0x4000) {  //$4000-7fff
-    return cartridge.rom.read(io.rom.bank << 14 | bits(address,0-13));
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    if(!io.ram.enable) return 0x01;  //does not return open collection
-    return cartridge.ram.read(io.ram.bank << 13 | bits(address,0-12));
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::HuC3::write(uint16 address, uint8 data) -> void {
-  if((address & 0xe000) == 0x0000) {  //$0000-1fff
-    io.ram.enable = bits(data,0-3) == 0x0a;
-    return;
-  }
-
-  if((address & 0xe000) == 0x2000) {  //$2000-3fff
-    io.rom.bank = data;
-    return;
-  }
-
-  if((address & 0xe000) == 0x4000) {  //$4000-5fff
-    io.ram.bank = data;
-    return;
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    if(!io.ram.enable) return;
-    return cartridge.ram.write(io.ram.bank << 13 | bits(address,0-12), data);
-  }
-}
-
-auto Cartridge::HuC3::power() -> void {
-  io = {};
-}
-
-auto Cartridge::HuC3::serialize(serializer& s) -> void {
-  s.integer(io.rom.bank);
-  s.integer(io.ram.enable);
-  s.integer(io.ram.bank);
-}

bsnes/gb/cartridge/huc3/huc3.hpp

@@ -1,16 +0,0 @@
-struct HuC3 : Mapper {
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer&) -> void;
-
-  struct IO {
-    struct ROM {
-      uint8 bank = 0x01;
-    } rom;
-    struct RAM {
-      uint1 enable;
-      uint8 bank;
-    } ram;
-  } io;
-} huc3;

bsnes/gb/cartridge/mbc0/mbc0.cpp

@@ -1,24 +0,0 @@
-auto Cartridge::MBC0::read(uint16 address) -> uint8 {
-  if((address & 0x8000) == 0x0000) {  //$0000-7fff
-    return cartridge.rom.read(bits(address,0-14));
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    return cartridge.ram.read(bits(address,0-12));
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::MBC0::write(uint16 address, uint8 data) -> void {
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    cartridge.ram.write(bits(address,0-12), data);
-    return;
-  }
-}
-
-auto Cartridge::MBC0::power() -> void {
-}
-
-auto Cartridge::MBC0::serialize(serializer& s) -> void {
-}

bsnes/gb/cartridge/mbc0/mbc0.hpp

@@ -1,6 +0,0 @@
-struct MBC0 : Mapper {
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer&) -> void;
-} mbc0;

bsnes/gb/cartridge/mbc1/mbc1.cpp

@@ -1,67 +0,0 @@
-auto Cartridge::MBC1::read(uint16 address) -> uint8 {
-  if((address & 0xc000) == 0x0000) {  //$0000-3fff
-    return cartridge.rom.read(bits(address,0-13));
-  }
-
-  if((address & 0xc000) == 0x4000) {  //$4000-7fff
-    if(io.mode == 0) {
-      return cartridge.rom.read(io.ram.bank << 19 | io.rom.bank << 14 | bits(address,0-13));
-    } else {
-      return cartridge.rom.read(io.rom.bank << 14 | bits(address,0-13));
-    }
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    if(!io.ram.enable) return 0xff;
-    if(io.mode == 0) {
-      return cartridge.ram.read(bits(address,0-12));
-    } else {
-      return cartridge.ram.read(io.ram.bank << 13 | bits(address,0-12));
-    }
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::MBC1::write(uint16 address, uint8 data) -> void {
-  if((address & 0xe000) == 0x0000) {  //$0000-1fff
-    io.ram.enable = bits(data,0-3) == 0x0a;
-    return;
-  }
-
-  if((address & 0xe000) == 0x2000) {  //$2000-3fff
-    io.rom.bank = bits(data,0-4);
-    if(!io.rom.bank) io.rom.bank = 0x01;
-    return;
-  }
-
-  if((address & 0xe000) == 0x4000) {  //$4000-5fff
-    io.ram.bank = bits(data,0-1);
-    return;
-  }
-
-  if((address & 0xe000) == 0x6000) {  //$6000-7fff
-    io.mode = bit1(data,0);
-    return;
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    if(!io.ram.enable) return;
-    if(io.mode == 0) {
-      return cartridge.ram.write(bits(address,0-12), data);
-    } else {
-      return cartridge.ram.write(io.ram.bank << 13 | bits(address,0-12), data);
-    }
-  }
-}
-
-auto Cartridge::MBC1::power() -> void {
-  io = {};
-}
-
-auto Cartridge::MBC1::serialize(serializer& s) -> void {
-  s.integer(io.mode);
-  s.integer(io.rom.bank);
-  s.integer(io.ram.enable);
-  s.integer(io.ram.bank);
-}

bsnes/gb/cartridge/mbc1/mbc1.hpp

@@ -1,17 +0,0 @@
-struct MBC1 : Mapper {
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer& s) -> void;
-
-  struct IO {
-    uint1 mode;
-    struct ROM {
-      uint8 bank = 0x01;
-    } rom;
-    struct RAM {
-      uint1 enable;
-      uint8 bank;
-    } ram;
-  } io;
-} mbc1;

bsnes/gb/cartridge/mbc1m/mbc1m.cpp

@@ -1,43 +0,0 @@
-auto Cartridge::MBC1M::read(uint16 address) -> uint8 {
-  if((address & 0xc000) == 0x0000) {  //$0000-3fff
-    if(io.mode == 0) return cartridge.rom.read(bits(address,0-13));
-    return cartridge.rom.read(bits(io.rom.bank,4-5) << 18 | bits(address,0-13));
-  }
-
-  if((address & 0xc000) == 0x4000) {  //$4000-7fff
-    return cartridge.rom.read(io.rom.bank << 14 | bits(address,0-13));
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    return cartridge.ram.read(bits(address,0-12));
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::MBC1M::write(uint16 address, uint8 data) -> void {
-  if((address & 0xe000) == 0x2000) {  //$2000-3fff
-    bits(io.rom.bank,0-3) = bits(data,0-3);
-  }
-
-  if((address & 0xe000) == 0x4000) {  //$4000-5fff
-    bits(io.rom.bank,4-5) = bits(data,0-1);
-  }
-
-  if((address & 0xe000) == 0x6000) {  //$6000-7fff
-    io.mode = bit1(data,0);
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    cartridge.ram.write(bits(address,0-13), data);
-  }
-}
-
-auto Cartridge::MBC1M::power() -> void {
-  io = {};
-}
-
-auto Cartridge::MBC1M::serialize(serializer& s) -> void {
-  s.integer(io.mode);
-  s.integer(io.rom.bank);
-}

bsnes/gb/cartridge/mbc1m/mbc1m.hpp

@@ -1,13 +0,0 @@
-struct MBC1M : Mapper {
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer&) -> void;
-
-  struct IO {
-    uint1 mode;
-    struct ROM {
-      uint6 bank = 0x01;
-    } rom;
-  } io;
-} mbc1m;

bsnes/gb/cartridge/mbc2/mbc2.cpp

@@ -1,61 +0,0 @@
-auto Cartridge::MBC2::read(uint16 address) -> uint8 {
-  if((address & 0xc000) == 0x0000) {  //$0000-3fff
-    return cartridge.rom.read(bits(address,0-13));
-  }
-
-  if((address & 0xc000) == 0x4000) {  //$4000-7fff
-    return cartridge.rom.read(io.rom.bank << 14 | bits(address,0-13));
-  }
-
-  if((address & 0xee01) == 0xa000) {  //$a000-a1ff (even)
-    if(!io.ram.enable) return 0xff;
-    auto ram = cartridge.ram.read(bits(address,1-8));
-    return 0xf0 | bits(ram,0-3);
-  }
-
-  if((address & 0xee01) == 0xa001) {  //$a000-a1ff (odd)
-    if(!io.ram.enable) return 0xff;
-    auto ram = cartridge.ram.read(bits(address,1-8));
-    return 0xf0 | bits(ram,4-7);
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::MBC2::write(uint16 address, uint8 data) -> void {
-  if((address & 0xe000) == 0x0000) {  //$0000-1fff
-    if(!bit1(address,8)) io.ram.enable = bits(data,0-3) == 0x0a;
-    return;
-  }
-
-  if((address & 0xe000) == 0x2000) {  //$2000-3fff
-    if(bit1(address,8)) io.rom.bank = bits(data,0-3);
-    if(!io.rom.bank) io.rom.bank = 0x01;
-    return;
-  }
-
-  if((address & 0xee01) == 0xa000) {  //$a000-a1ff (even)
-    if(!io.ram.enable) return;
-    auto ram = cartridge.ram.read(bits(address,1-8));
-    bits(ram,0-3) = (uint)bits(data,0-3);
-    cartridge.ram.write(bits(address,1-8), ram);
-    return;
-  }
-
-  if((address & 0xee01) == 0xa001) {  //$a000-a1ff (odd)
-    if(!io.ram.enable) return;
-    auto ram = cartridge.ram.read(bits(address,1-8));
-    bits(ram,4-7) = (uint)bits(data,0-3);
-    cartridge.ram.write(bits(address,1-8), ram);
-    return;
-  }
-}
-
-auto Cartridge::MBC2::power() -> void {
-  io = {};
-}
-
-auto Cartridge::MBC2::serialize(serializer& s) -> void {
-  s.integer(io.rom.bank);
-  s.integer(io.ram.enable);
-}

bsnes/gb/cartridge/mbc2/mbc2.hpp

@@ -1,15 +0,0 @@
-struct MBC2 : Mapper {
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer&) -> void;
-
-  struct IO {
-    struct ROM {
-      uint8 bank = 0x01;
-    } rom;
-    struct RAM {
-      uint1 enable = 0;
-    } ram;
-  } io;
-} mbc2;

bsnes/gb/cartridge/mbc3/mbc3.cpp

@@ -1,113 +0,0 @@
-auto Cartridge::MBC3::second() -> void {
-  if(io.rtc.halt) return;
-  if(++io.rtc.second >= 60) {
-    io.rtc.second = 0;
-    if(++io.rtc.minute >= 60) {
-      io.rtc.minute = 0;
-      if(++io.rtc.hour >= 24) {
-        io.rtc.hour = 0;
-        if(++io.rtc.day == 0) {
-          io.rtc.dayCarry = true;
-        }
-      }
-    }
-  }
-}
-
-auto Cartridge::MBC3::read(uint16 address) -> uint8 {
-  if((address & 0xc000) == 0x0000) {  //$0000-3fff
-    return cartridge.rom.read(bits(address,0-13));
-  }
-
-  if((address & 0xc000) == 0x4000) {  //$4000-7fff
-    return cartridge.rom.read(io.rom.bank << 14 | bits(address,0-13));
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    if(!io.ram.enable) return 0xff;
-    if(io.ram.bank <= 0x03) return cartridge.ram.read(io.ram.bank << 13 | bits(address,0-12));
-    if(io.ram.bank == 0x08) return io.rtc.latchSecond;
-    if(io.ram.bank == 0x09) return io.rtc.latchMinute;
-    if(io.ram.bank == 0x0a) return io.rtc.latchHour;
-    if(io.ram.bank == 0x0b) return io.rtc.latchDay;
-    if(io.ram.bank == 0x0c) return io.rtc.latchDayCarry << 7 | io.rtc.latchDay >> 8;
-    return 0xff;
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::MBC3::write(uint16 address, uint8 data) -> void {
-  if((address & 0xe000) == 0x0000) {  //$0000-1fff
-    io.ram.enable = bits(data,0-3) == 0x0a;
-    return;
-  }
-
-  if((address & 0xe000) == 0x2000) {  //$2000-3fff
-    io.rom.bank = bits(data,0-6);
-    if(!io.rom.bank) io.rom.bank = 0x01;
-    return;
-  }
-
-  if((address & 0xe000) == 0x4000) {  //$4000-5fff
-    io.ram.bank = data;
-    return;
-  }
-
-  if((address & 0xe000) == 0x6000) {  //$6000-7fff
-    if(io.rtc.latch == 0 && data == 1) {
-      io.rtc.latchSecond = io.rtc.second;
-      io.rtc.latchMinute = io.rtc.minute;
-      io.rtc.latchHour = io.rtc.hour;
-      io.rtc.latchDay = io.rtc.day;
-      io.rtc.latchDayCarry = io.rtc.dayCarry;
-    }
-    io.rtc.latch = data;
-    return;
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    if(!io.ram.enable) return;
-    if(io.ram.bank <= 0x03) {
-      cartridge.ram.write(io.ram.bank << 13 | bits(address,0-12), data);
-    } else if(io.ram.bank == 0x08) {
-      if(data >= 60) data = 0;
-      io.rtc.second = data;
-    } else if(io.ram.bank == 0x09) {
-      if(data >= 60) data = 0;
-      io.rtc.minute = data;
-    } else if(io.ram.bank == 0x0a) {
-      if(data >= 24) data = 0;
-      io.rtc.hour = data;
-    } else if(io.ram.bank == 0x0b) {
-      bits(io.rtc.day,0-7) = bits(data,0-7);
-    } else if(io.ram.bank == 0x0c) {
-      bit1(io.rtc.day,8) = bit1(data,0);
-      io.rtc.halt = bit1(data,6);
-      io.rtc.dayCarry = bit1(data,7);
-    }
-    return;
-  }
-}
-
-auto Cartridge::MBC3::power() -> void {
-  io = {};
-}
-
-auto Cartridge::MBC3::serialize(serializer& s) -> void {
-  s.integer(io.rom.bank);
-  s.integer(io.ram.enable);
-  s.integer(io.ram.bank);
-  s.integer(io.rtc.halt);
-  s.integer(io.rtc.latch);
-  s.integer(io.rtc.second);
-  s.integer(io.rtc.minute);
-  s.integer(io.rtc.hour);
-  s.integer(io.rtc.day);
-  s.integer(io.rtc.dayCarry);
-  s.integer(io.rtc.latchSecond);
-  s.integer(io.rtc.latchMinute);
-  s.integer(io.rtc.latchHour);
-  s.integer(io.rtc.latchDay);
-  s.integer(io.rtc.latchDayCarry);
-}

bsnes/gb/cartridge/mbc3/mbc3.hpp

@@ -1,33 +0,0 @@
-struct MBC3 : Mapper {
-  auto second() -> void;
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer& s) -> void;
-
-  struct IO {
-    struct ROM {
-      uint8 bank = 0x01;
-    } rom;
-    struct RAM {
-      uint1 enable;
-      uint8 bank;
-    } ram;
-    struct RTC {
-      uint1 halt = true;
-      uint1 latch;
-
-      uint8 second;
-      uint8 minute;
-      uint8 hour;
-      uint9 day;
-      uint1 dayCarry;
-
-      uint8 latchSecond;
-      uint8 latchMinute;
-      uint8 latchHour;
-      uint9 latchDay;
-      uint1 latchDayCarry;
-    } rtc;
-  } io;
-} mbc3;

bsnes/gb/cartridge/mbc5/mbc5.cpp

@@ -1,54 +0,0 @@
-auto Cartridge::MBC5::read(uint16 address) -> uint8 {
-  if((address & 0xc000) == 0x0000) {  //$0000-3fff
-    return cartridge.rom.read(bits(address,0-13));
-  }
-
-  if((address & 0xc000) == 0x4000) {  //$4000-7fff
-    return cartridge.rom.read(io.rom.bank << 14 | bits(address,0-13));
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    if(!io.ram.enable) return 0xff;
-    return cartridge.ram.read(io.ram.bank << 13 | bits(address,0-12));
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::MBC5::write(uint16 address, uint8 data) -> void {
-  if((address & 0xe000) == 0x0000) {  //$0000-1fff
-    io.ram.enable = bits(data,0-3) == 0x0a;
-    return;
-  }
-
-  if((address & 0xf000) == 0x2000) {  //$2000-2fff
-    bits(io.rom.bank,0-7) = bits(data,0-7);
-    return;
-  }
-
-  if((address & 0xf000) == 0x3000) {  //$3000-3fff
-    bit1(io.rom.bank,8) = bit1(data,0);
-    return;
-  }
-
-  if((address & 0xe000) == 0x4000) {  //$4000-5fff
-    if(cartridge.rumble) platform->inputRumble(ID::Port::Cartridge, ID::Device::MBC5, 0, bit1(data,3));
-    io.ram.bank = bits(data,0-3);
-    return;
-  }
-
-  if((address & 0xe000) == 0xa000) {  //$a000-bfff
-    if(!io.ram.enable) return;
-    return cartridge.ram.write(io.ram.bank << 13 | bits(address,0-12), data);
-  }
-}
-
-auto Cartridge::MBC5::power() -> void {
-  io = {};
-}
-
-auto Cartridge::MBC5::serialize(serializer& s) -> void {
-  s.integer(io.rom.bank);
-  s.integer(io.ram.enable);
-  s.integer(io.ram.bank);
-}

bsnes/gb/cartridge/mbc5/mbc5.hpp

@@ -1,16 +0,0 @@
-struct MBC5 : Mapper {
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer&) -> void;
-
-  struct IO {
-    struct ROM {
-      uint9 bank = 0x01;
-    } rom;
-    struct RAM {
-      uint1 enable;
-      uint4 bank;
-    } ram;
-  } io;
-} mbc5;

bsnes/gb/cartridge/mbc6/mbc6.cpp

@@ -1,74 +0,0 @@
-auto Cartridge::MBC6::read(uint16 address) -> uint8 {
-  if((address & 0xc000) == 0x0000) {  //$0000-3fff
-    return cartridge.rom.read(bits(address,0-13));
-  }
-
-  if((address & 0xe000) == 0x4000) {  //$4000-5fff
-    return cartridge.rom.read(io.rom.bank[0] << 13 | bits(address,0-12));
-  }
-
-  if((address & 0xe000) == 0x6000) {  //$6000-7fff
-    return cartridge.rom.read(io.rom.bank[1] << 13 | bits(address,0-12));
-  }
-
-  if((address & 0xf000) == 0xa000) {  //$a000-afff
-    if(!io.ram.enable) return 0xff;
-    return cartridge.ram.read(io.ram.bank[0] << 12 | bits(address,0-11));
-  }
-
-  if((address & 0xf000) == 0xb000) {  //$b000-bfff
-    if(!io.ram.enable) return 0xff;
-    return cartridge.ram.read(io.ram.bank[1] << 12 | bits(address,0-11));
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::MBC6::write(uint16 address, uint8 data) -> void {
-  if((address & 0xfc00) == 0x0000) {
-    io.ram.enable = bits(data,0-3) == 0xa;
-    return;
-  }
-
-  if((address & 0xfc00) == 0x0400) {
-    io.ram.bank[0] = data;
-    return;
-  }
-
-  if((address & 0xfc00) == 0x0800) {
-    io.ram.bank[1] = data;
-    return;
-  }
-
-  if((address & 0xf800) == 0x2000) {
-    io.rom.bank[0] = data;
-    return;
-  }
-
-  if((address & 0xf800) == 0x3000) {
-    io.rom.bank[1] = data;
-    return;
-  }
-
-  if((address & 0xf000) == 0xa000) {  //$a000-afff
-    if(!io.ram.enable) return;
-    return cartridge.ram.write(io.ram.bank[0] << 12 | bits(address,0-11), data);
-  }
-
-  if((address & 0xf000) == 0xb000) {  //$b000-bfff
-    if(!io.ram.enable) return;
-    return cartridge.ram.write(io.ram.bank[1] << 12 | bits(address,0-11), data);
-  }
-}
-
-auto Cartridge::MBC6::power() -> void {
-  io = {};
-}
-
-auto Cartridge::MBC6::serialize(serializer& s) -> void {
-  s.integer(io.rom.bank[0]);
-  s.integer(io.rom.bank[1]);
-  s.integer(io.ram.enable);
-  s.integer(io.ram.bank[0]);
-  s.integer(io.ram.bank[1]);
-}

bsnes/gb/cartridge/mbc6/mbc6.hpp

@@ -1,16 +0,0 @@
-struct MBC6 : Mapper {
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer&) -> void;
-
-  struct IO {
-    struct ROM {
-      uint8 bank[2];
-    } rom;
-    struct RAM {
-      uint1 enable;
-      uint8 bank[2];
-    } ram;
-  } io;
-} mbc6;

bsnes/gb/cartridge/mbc7/eeprom.cpp

@@ -1,241 +0,0 @@
-//Microchip 93LCx6
-//  93LC46 => 1024 cells => 128 x 8-bit or  64 x 16-bit
-//  93LC56 => 2048 cells => 256 x 8-bit or 128 x 16-bit
-//  93LC66 => 4096 cells => 512 x 8-bit or 256 x 16-bit
-
-auto Cartridge::MBC7::EEPROM::load(Markup::Node document) -> void {
-  for(auto& byte : data) byte = 0xff;
-  size = 512;  //EEPROM size is in bytes
-  width = 16;  //16-bit configuration
-
-  if(auto memory = Emulator::Game::Memory{document["game/board/memory(type=EEPROM,content=Save)"]}) {
-    if(memory.size == 128) size = 128;
-    if(memory.size == 256) size = 256;
-    if(memory.size == 512) size = 512;
-
-    if(auto fp = platform->open(cartridge.pathID(), memory.name(), File::Read, File::Optional)) {
-      fp->read(data, min(fp->size(), sizeof(data)));
-    }
-  }
-
-  //note: the 93LC56 alone has an extra dummy address bit
-  if(size == 128) input.addressLength = width == 16 ? 6 : 7;  //93LC46
-  if(size == 256) input.addressLength = width == 16 ? 8 : 9;  //93LC56
-  if(size == 512) input.addressLength = width == 16 ? 8 : 9;  //93LC66
-  input.dataLength = width;
-}
-
-auto Cartridge::MBC7::EEPROM::save(Markup::Node document) -> void {
-  if(auto memory = Emulator::Game::Memory{document["game/board/memory(type=EEPROM,content=Save)"]}) {
-    if(auto fp = platform->open(cartridge.pathID(), memory.name(), File::Write)) {
-      fp->write(data, size);
-    }
-  }
-}
-
-auto Cartridge::MBC7::EEPROM::main() -> void {
-  //step by approximately one millisecond
-  cartridge.step(cartridge.frequency() / 1000);
-
-  //set during programming commands
-  if(busy) busy--;
-}
-
-auto Cartridge::MBC7::EEPROM::power() -> void {
-  select = 0;
-  clock = 0;
-  writable = 0;
-  busy = 0;
-
-  input.flush();
-  output.flush();
-}
-
-auto Cartridge::MBC7::EEPROM::readIO() -> uint8 {
-  uint8 data = 0b00'1111'00;
-  bit1(data,7) = select;
-  bit1(data,6) = clock;
-  bit1(data,1) = input.edge();
-  if(!select) {
-    bit1(data,0) = 1;  //high-z when the chip is idle (not selected)
-  } else if(busy) {
-    bit1(data,0) = 0;  //low when a programming command is in progress
-  } else if(output.count) {
-    bit1(data,0) = output.edge();  //shift register data during read commands
-  } else {
-    bit1(data,0) = 1;  //high-z during all other commands
-  }
-  return data;
-}
-
-auto Cartridge::MBC7::EEPROM::writeIO(uint8 data) -> void {
-  //chip enters idle state on falling CS edge
-  if(select && !bit1(data,7)) return power();
-
-  //chip leaves idle state on rising CS edge
-  if(!(select = bit1(data,7))) return;
-
-  //input shift register clocks on rising edge
-  if(!clock.raise(bit1(data,6))) return;
-
-  //read mode
-  if(output.count && !bit1(data,1)) {
-    if(input.start() && *input.start() == 1) {
-      if(input.opcode() && *input.opcode() == 0b10) {
-        output.read();
-        if(output.count == 0) {
-          //sequential read mode
-          input.increment();
-          read();
-        }
-      }
-    }
-    return;
-  }
-  output.flush();
-
-  input.write(bit1(data,1));
-
-  //wait for start
-  if(!input.start()) return;
-  uint start = *input.start();
-
-  //start bit must be set
-  if(start != 1) return input.flush();
-
-  //wait for opcode
-  if(!input.opcode()) return;
-  uint opcode = *input.opcode();
-
-  //wait for address
-  if(!input.address()) return;
-
-  if(opcode == 0b00) {
-    auto mode = *input.mode();
-    if(mode == 0b00) return writeDisable();
-    if(mode == 0b01) return writeAll();
-    if(mode == 0b10) return eraseAll();
-    if(mode == 0b11) return writeEnable();
-  }
-  if(opcode == 0b01) return write();
-  if(opcode == 0b10) return read();
-  if(opcode == 0b11) return erase();
-}
-
-//
-
-auto Cartridge::MBC7::EEPROM::read() -> void {
-  uint address = *input.address() << (width == 16) & size - 1;
-  output.flush();
-  for(uint4 index : range(width)) {
-    output.write(bit1(data[address + !bit1(index,3)],bits(index,0-2)));
-  }
-  output.write(0);  //reads have an extra dummy data bit
-}
-
-auto Cartridge::MBC7::EEPROM::write() -> void {
-  if(!input.data()) return;  //wait for data
-  if(!writable) return input.flush();
-  uint address = *input.address() << (width == 16) & size - 1;
-  for(uint4 index : range(width)) {
-    bit1(data[address + !bit1(index,3)],bits(index,0-2)) = input.read();
-  }
-  busy = 4;  //milliseconds
-  return input.flush();
-}
-
-auto Cartridge::MBC7::EEPROM::erase() -> void {
-  if(!writable) return input.flush();
-  uint address = *input.address() << (width == 16) & size - 1;
-  for(uint index : range(width)) {
-    bit1(data[address + index / 8],index % 8) = 1;
-  }
-  busy = 4;  //milliseconds
-  return input.flush();
-}
-
-auto Cartridge::MBC7::EEPROM::writeAll() -> void {
-  if(!input.data()) return;  //wait for data
-  if(!writable) return input.flush();
-  auto word = *input.data();
-  for(uint address = 0; address < 512;) {
-    data[address++] = bit8(word,width == 16);
-    data[address++] = bit8(word,0);
-  }
-  busy = 16;  //milliseconds
-  return input.flush();
-}
-
-auto Cartridge::MBC7::EEPROM::eraseAll() -> void {
-  if(!writable) return input.flush();
-  for(auto& byte : data) byte = 0xff;
-  busy = 8;  //milliseconds
-  return input.flush();
-}
-
-auto Cartridge::MBC7::EEPROM::writeEnable() -> void {
-  writable = true;
-  return input.flush();
-}
-
-auto Cartridge::MBC7::EEPROM::writeDisable() -> void {
-  writable = false;
-  return input.flush();
-}
-
-//
-
-auto Cartridge::MBC7::EEPROM::ShiftRegister::flush() -> void {
-  value = 0;
-  count = 0;
-}
-
-auto Cartridge::MBC7::EEPROM::ShiftRegister::edge() -> uint1 {
-  return value & 1;
-}
-
-auto Cartridge::MBC7::EEPROM::ShiftRegister::read() -> uint1 {
-  uint1 bit = value & 1;
-  value >>= 1;
-  count--;
-  return bit;
-}
-
-auto Cartridge::MBC7::EEPROM::ShiftRegister::write(uint1 bit) -> void {
-  value <<= 1;
-  bit1(value,0) = bit;
-  count++;
-}
-
-//
-
-auto Cartridge::MBC7::EEPROM::InputShiftRegister::start() -> maybe<uint1> {
-  if(count < 1) return {};
-  return {value >> count - 1 & 1};
-}
-
-auto Cartridge::MBC7::EEPROM::InputShiftRegister::opcode() -> maybe<uint2> {
-  if(count < 1 + 2) return {};
-  return {value >> count - 3 & 3};
-}
-
-auto Cartridge::MBC7::EEPROM::InputShiftRegister::mode() -> maybe<uint2> {
-  if(count < 1 + 2 + addressLength) return {};
-  return {value >> count - 5 & 3};
-}
-
-auto Cartridge::MBC7::EEPROM::InputShiftRegister::address() -> maybe<uint9> {
-  if(count < 1 + 2 + addressLength) return {};
-  return {value >> count - (3 + addressLength) & (1 << addressLength) - 1};
-}
-
-auto Cartridge::MBC7::EEPROM::InputShiftRegister::data() -> maybe<uint16> {
-  if(count < 1 + 2 + addressLength + dataLength) return {};
-  uint16 data = value >> count - (3 + addressLength + dataLength) & (1 << dataLength) - 1;
-  return data;
-}
-
-auto Cartridge::MBC7::EEPROM::InputShiftRegister::increment() -> void {
-  uint mask = (1 << addressLength) - 1;
-  value = value & ~mask | (value + 1 & mask);
-}

bsnes/gb/cartridge/mbc7/mbc7.cpp

@@ -1,93 +0,0 @@
-#include "eeprom.cpp"
-#include "serialization.cpp"
-
-auto Cartridge::MBC7::load(Markup::Node document) -> void {
-  eeprom.load(document);
-}
-
-auto Cartridge::MBC7::save(Markup::Node document) -> void {
-  eeprom.save(document);
-}
-
-auto Cartridge::MBC7::main() -> void {
-  eeprom.main();
-}
-
-auto Cartridge::MBC7::read(uint16 address) -> uint8 {
-  if((address & 0xc000) == 0x0000) {  //$0000-3fff
-    return cartridge.rom.read(bits(address,0-13));
-  }
-
-  if((address & 0xc000) == 0x4000) {  //$4000-7fff
-    return cartridge.rom.read(io.rom.bank << 14 | bits(address,0-13));
-  }
-
-  if((address & 0xf000) == 0xa000) {  //$a000-afff
-    if(!io.ram.enable[0] || !io.ram.enable[1]) return 0xff;
-
-    switch(bits(address,4-7)) {
-    case 2: return bit8(io.accelerometer.x,0);
-    case 3: return bit8(io.accelerometer.x,1);
-    case 4: return bit8(io.accelerometer.y,0);
-    case 5: return bit8(io.accelerometer.y,1);
-    case 6: return 0x00;  //z?
-    case 7: return 0xff;  //z?
-    case 8: return eeprom.readIO();
-    }
-
-    return 0xff;
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::MBC7::write(uint16 address, uint8 data) -> void {
-  if((address & 0xe000) == 0x0000) {  //$0000-1fff
-    io.ram.enable[0] = bits(data,0-3) == 0xa;
-    if(!io.ram.enable[0]) io.ram.enable[1] = false;
-    return;
-  }
-
-  if((address & 0xe000) == 0x2000) {  //$2000-3fff
-    io.rom.bank = data;
-    if(!io.rom.bank) io.rom.bank = 1;
-    return;
-  }
-
-  if((address & 0xe000) == 0x4000) {  //$4000-5fff
-    if(!io.ram.enable[0]) return;
-    io.ram.enable[1] = data == 0x40;
-  }
-
-  if((address & 0xf000) == 0xa000) {  //$a000-afff
-    if(!io.ram.enable[0] || !io.ram.enable[1]) return;
-
-    switch(bits(address,4-7)) {
-    case 0: {
-      if(data != 0x55) break;
-      io.accelerometer.x = Center;
-      io.accelerometer.y = Center;
-      break;
-    }
-
-    case 1: {
-      if(data != 0xaa) break;
-      io.accelerometer.x = Center - platform->inputPoll(ID::Port::Cartridge, ID::Device::MBC7, 0);
-      io.accelerometer.y = Center + platform->inputPoll(ID::Port::Cartridge, ID::Device::MBC7, 1);
-      break;
-    }
-
-    case 8: {
-      eeprom.writeIO(data);
-      break;
-    }
-    }
-
-    return;
-  }
-}
-
-auto Cartridge::MBC7::power() -> void {
-  eeprom.power();
-  io = {};
-}

bsnes/gb/cartridge/mbc7/mbc7.hpp

@@ -1,91 +0,0 @@
-struct MBC7 : Mapper {
-  enum : uint { Center = 0x81d0 };  //not 0x8000
-
-  //mbc7.cpp
-  auto load(Markup::Node document) -> void override;
-  auto save(Markup::Node document) -> void override;
-  auto main() -> void override;
-  auto read(uint16 address) -> uint8 override;
-  auto write(uint16 address, uint8 data) -> void override;
-  auto power() -> void override;
-
-  //serialization.cpp
-  auto serialize(serializer&) -> void override;
-
-  struct EEPROM {
-    //eeprom.cpp
-    auto load(Markup::Node document) -> void;
-    auto save(Markup::Node document) -> void;
-    auto main() -> void;
-    auto power() -> void;
-
-    //Game Boy MBC7 interface
-    auto readIO() -> uint8;
-    auto writeIO(uint8 data) -> void;
-
-    //chip commands
-    auto read() -> void;
-    auto write() -> void;
-    auto erase() -> void;
-    auto writeAll() -> void;
-    auto eraseAll() -> void;
-    auto writeEnable() -> void;
-    auto writeDisable() -> void;
-
-    //serialization.cpp
-    auto serialize(serializer&) -> void;
-
-    //it is awkward no matter if data is uint1[4096], uint8[512], or uint16[256]
-    uint8 data[512];   //uint8 was chosen solely for easier serialization and saving
-    uint size;         //in bytes
-    uint width;        //8-bit (ORG=0) or 16-bit (ORG=1) configuration
-
-    boolean select;    //CS
-    boolean clock;     //CLK
-    boolean writable;  //EWEN, EWDS
-    uint busy;         //busy cycles in milliseconds remaining for programming (write) operations to complete
-
-    struct ShiftRegister {
-      auto flush() -> void;
-      auto edge() -> uint1;
-      auto read() -> uint1;
-      auto write(uint1 data) -> void;
-
-      uint32 value;
-      uint32 count;
-    };
-
-    struct InputShiftRegister : ShiftRegister {
-      auto start() -> maybe<uint1>;
-      auto opcode() -> maybe<uint2>;
-      auto mode() -> maybe<uint2>;
-      auto address() -> maybe<uint9>;
-      auto data() -> maybe<uint16>;
-      auto increment() -> void;
-
-      //serialization.cpp
-      auto serialize(serializer&) -> void;
-
-      uint32 addressLength;
-      uint32 dataLength;
-    } input;
-
-    struct OutputShiftRegister : ShiftRegister {
-      //serialization.cpp
-      auto serialize(serializer&) -> void;
-    } output;
-  } eeprom;
-
-  struct IO {
-    struct ROM {
-      uint8 bank = 0x01;
-    } rom;
-    struct RAM {
-      uint1 enable[2];
-    } ram;
-    struct Accelerometer {
-      uint16 x = Center;
-      uint16 y = Center;
-    } accelerometer;
-  } io;
-} mbc7;

bsnes/gb/cartridge/mbc7/serialization.cpp

@@ -1,32 +0,0 @@
-auto Cartridge::MBC7::serialize(serializer& s) -> void {
-  eeprom.serialize(s);
-  s.integer(io.rom.bank);
-  s.integer(io.ram.enable[0]);
-  s.integer(io.ram.enable[1]);
-  s.integer(io.accelerometer.x);
-  s.integer(io.accelerometer.y);
-}
-
-auto Cartridge::MBC7::EEPROM::serialize(serializer& s) -> void {
-  s.array(data);
-  s.integer(size);
-  s.integer(width);
-  s.boolean(select);
-  s.boolean(clock);
-  s.boolean(writable);
-  s.integer(busy);
-  input.serialize(s);
-  output.serialize(s);
-}
-
-auto Cartridge::MBC7::EEPROM::InputShiftRegister::serialize(serializer& s) -> void {
-  s.integer(value);
-  s.integer(count);
-  s.integer(addressLength);
-  s.integer(dataLength);
-}
-
-auto Cartridge::MBC7::EEPROM::OutputShiftRegister::serialize(serializer& s) -> void {
-  s.integer(value);
-  s.integer(count);
-}

bsnes/gb/cartridge/mmm01/mmm01.cpp

@@ -1,65 +0,0 @@
-auto Cartridge::MMM01::read(uint16 address) -> uint8 {
-  if(io.mode == 0) {
-    if((address & 0x8000) == 0x0000) {  //$0000-7fff
-      return cartridge.rom.read(cartridge.rom.size - 0x8000 + bits(address,0-14));
-    }
-
-    return 0xff;
-  } else {
-    if((address & 0xc000) == 0x0000) {  //$0000-3fff
-      return cartridge.rom.read((io.rom.base << 14) + bits(address,0-13));
-    }
-
-    if((address & 0xc000) == 0x4000) {  //$4000-7fff
-      return cartridge.rom.read((io.rom.base << 14) + (io.rom.bank << 14) + bits(address,0-13));
-    }
-
-    if((address & 0xe000) == 0xa000) {  //$a000-bfff
-      if(!io.ram.enable) return 0xff;
-      return cartridge.ram.read(io.ram.bank << 13 | bits(address,0-12));
-    }
-
-    return 0xff;
-  }
-}
-
-auto Cartridge::MMM01::write(uint16 address, uint8 data) -> void {
-  if(io.mode == 0) {
-    if((address & 0xe000) == 0x0000) {  //$0000-1fff
-      io.mode = 1;
-    }
-
-    if((address & 0xe000) == 0x2000) {  //$2000-3fff
-      io.rom.base = bits(data,0-5);
-    }
-  } else {
-    if((address & 0xe000) == 0x0000) {  //$0000-1fff
-      io.ram.enable = bits(data,0-3) == 0x0a;
-    }
-
-    if((address & 0xe000) == 0x2000) {  //$2000-3fff
-      io.rom.bank = data;
-    }
-
-    if((address & 0xe000) == 0x4000) {  //$4000-5fff
-      io.ram.bank = data;
-    }
-
-    if((address & 0xe000) == 0xa000) {  //$a000-bfff
-      if(!io.ram.enable) return;
-      cartridge.ram.write(io.ram.bank << 13 | bits(address,0-12), data);
-    }
-  }
-}
-
-auto Cartridge::MMM01::power() -> void {
-  io = {};
-}
-
-auto Cartridge::MMM01::serialize(serializer& s) -> void {
-  s.integer(io.mode);
-  s.integer(io.rom.base);
-  s.integer(io.rom.bank);
-  s.integer(io.ram.enable);
-  s.integer(io.ram.bank);
-}

bsnes/gb/cartridge/mmm01/mmm01.hpp

@@ -1,18 +0,0 @@
-struct MMM01 : Mapper {
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer& s) -> void;
-
-  struct IO {
-    uint1 mode;
-    struct ROM {
-      uint6 base;
-      uint8 bank = 0x01;
-    } rom;
-    struct RAM {
-      uint1 enable;
-      uint8 bank;
-    } ram;
-  } io;
-} mmm01;

bsnes/gb/cartridge/serialization.cpp

@@ -1,9 +0,0 @@
-auto Cartridge::serialize(serializer& s) -> void {
-  Thread::serialize(s);
-  if(ram.size) s.array(ram.data, ram.size);
-  if(rtc.size) s.array(rtc.data, rtc.size);
-
-  s.integer(bootromEnable);
-
-  mapper->serialize(s);
-}

bsnes/gb/cartridge/tama/tama.cpp

@@ -1,236 +0,0 @@
-//U1: TAMA7: Mask ROM (512KB)
-//U2: TAMA5: Game Boy cartridge connector interface
-//U3: TAMA6: Toshiba TMP47C243M (4-bit MCU)
-//U4: RTC: Toshiba TC8521AM
-
-//note: the TMP47C243M's 2048 x 8-bit program ROM is currently undumped
-//as such, high level emulation is used as a necessary evil
-
-auto Cartridge::TAMA::second() -> void {
-  if(++rtc.second >= 60) {
-    rtc.second = 0;
-
-    if(++rtc.minute >= 60) {
-      rtc.minute = 0;
-
-      if(rtc.hourMode == 0 && ++rtc.hour >= 12) {
-        rtc.hour = 0;
-        rtc.meridian++;
-      }
-
-      if(rtc.hourMode == 1 && ++rtc.hour >= 24) {
-        rtc.hour = 0;
-        rtc.meridian = rtc.hour >= 12;
-      }
-
-      if((rtc.hourMode == 0 && rtc.hour == 0 && rtc.meridian == 0)
-      || (rtc.hourMode == 1 && rtc.hour == 0)
-      ) {
-        uint days[12] = {31, 28, 31, 30, 31, 30, 30, 31, 30, 31, 30, 31};
-        if(rtc.leapYear == 0) days[1] = 29;  //extra day in February for leap years
-
-        if(++rtc.day > days[(rtc.month - 1) % 12]) {
-          rtc.day = 1;
-
-          if(++rtc.month > 12) {
-            rtc.month = 1;
-            rtc.leapYear++;
-
-            if(++rtc.year >= 100) {
-              rtc.year = 0;
-            }
-          }
-        }
-      }
-    }
-  }
-}
-
-auto Cartridge::TAMA::read(uint16 address) -> uint8 {
-  if((address & 0xc000) == 0x0000) {  //$0000-3fff
-    return cartridge.rom.read(bits(address,0-13));
-  }
-
-  if((address & 0xc000) == 0x4000) {  //$4000-7fff
-    return cartridge.rom.read(io.rom.bank << 14 | bits(address,0-13));
-  }
-
-  if((address & 0xe001) == 0xa000) {  //$a000-bfff (even)
-    if(io.select == 0x0a) {
-      return 0xf0 | io.ready;
-    }
-
-    if(io.mode == 0 || io.mode == 1) {
-      if(io.select == 0x0c) {
-        return 0xf0 | bits(io.output,0-3);
-      }
-
-      if(io.select == 0x0d) {
-        return 0xf0 | bits(io.output,4-7);
-      }
-    }
-
-    if(io.mode == 2 || io.mode == 4) {
-      if(io.select == 0x0c || io.select == 0x0d) {
-        uint4 data;
-        if(rtc.index == 0) data = rtc.minute % 10;
-        if(rtc.index == 1) data = rtc.minute / 10;
-        if(rtc.index == 2) data = rtc.hour % 10;
-        if(rtc.index == 3) data = rtc.hour / 10;
-        if(rtc.index == 4) data = rtc.day / 10;
-        if(rtc.index == 5) data = rtc.day % 10;
-        if(rtc.index == 6) data = rtc.month / 10;
-        if(rtc.index == 7) data = rtc.month % 10;
-        rtc.index++;
-        return 0xf0 | data;
-      }
-    }
-
-    return 0xff;
-  }
-
-  if((address & 0xe001) == 0xa001) {  //$a000-bfff (odd)
-    return 0xff;
-  }
-
-  return 0xff;
-}
-
-auto Cartridge::TAMA::write(uint16 address, uint8 data) -> void {
-  auto toBCD = [](uint8 data) -> uint8 { return (data / 10) * 16 + (data % 10); };
-  auto fromBCD = [](uint8 data) -> uint8 { return (data / 16) * 10 + (data % 16); };
-
-  if((address & 0xe001) == 0xa000) {  //$a000-bfff (even)
-    if(io.select == 0x00) {
-      bits(io.rom.bank,0-3) = (uint)bits(data,0-3);
-    }
-
-    if(io.select == 0x01) {
-      bit1(io.rom.bank,4) = (uint)bit1(data,0);
-    }
-
-    if(io.select == 0x04) {
-      bits(io.input,0-3) = (uint)bits(data,0-3);
-    }
-
-    if(io.select == 0x05) {
-      bits(io.input,4-7) = (uint)bits(data,0-3);
-    }
-
-    if(io.select == 0x06) {
-      bit1(io.index,4) = (uint)bit1(data,0);
-      io.mode = bits(data,1-3);
-    }
-
-    if(io.select == 0x07) {
-      bits(io.index,0-3) = (uint)bits(data,0-3);
-
-      if(io.mode == 0) {
-        cartridge.ram.write(io.index, io.input);
-      }
-
-      if(io.mode == 1) {
-        io.output = cartridge.ram.read(io.index);
-      }
-
-      if(io.mode == 2 && io.index == 0x04) {
-        rtc.minute = fromBCD(io.input);
-      }
-
-      if(io.mode == 2 && io.index == 0x05) {
-        rtc.hour = fromBCD(io.input);
-        rtc.meridian = rtc.hour >= 12;
-      }
-
-      if(io.mode == 4 && io.index == 0x00 && bits(io.input,0-3) == 0x7) {
-        uint8 day = toBCD(rtc.day);
-        bits(day,0-3) = (uint)bits(io.input,4-7);
-        rtc.day = fromBCD(day);
-      }
-
-      if(io.mode == 4 && io.index == 0x00 && bits(io.input,0-3) == 0x8) {
-        uint8 day = toBCD(rtc.day);
-        bits(day,4-7) = (uint)bits(io.input,4-7);
-        rtc.day = fromBCD(day);
-      }
-
-      if(io.mode == 4 && io.index == 0x00 && bits(io.input,0-3) == 0x9) {
-        uint8 month = toBCD(rtc.month);
-        bits(month,0-3) = (uint)bits(io.input,4-7);
-        rtc.month = fromBCD(month);
-      }
-
-      if(io.mode == 4 && io.index == 0x00 && bits(io.input,0-3) == 0xa) {
-        uint8 month = toBCD(rtc.month);
-        bits(month,4-7) = (uint)bits(io.input,4-7);
-        rtc.month = fromBCD(month);
-      }
-
-      if(io.mode == 4 && io.index == 0x00 && bits(io.input,0-3) == 0xb) {
-        uint8 year = toBCD(rtc.year);
-        bits(year,0-3) = (uint)bits(io.input,4-7);
-        rtc.year = fromBCD(year);
-      }
-
-      if(io.mode == 4 && io.index == 0x00 && bits(io.input,0-3) == 0xc) {
-        uint8 year = toBCD(rtc.year);
-        bits(year,4-7) = (uint)bits(io.input,4-7);
-        rtc.year = fromBCD(year);
-      }
-
-      if(io.mode == 4 && io.index == 0x02 && bits(io.input,0-3) == 0xa) {
-        rtc.hourMode = bit1(io.input,4);
-        rtc.second = 0;  //hack: unclear where this is really being set (if it is at all)
-      }
-
-      if(io.mode == 4 && io.index == 0x02 && bits(io.input,0-3) == 0xb) {
-        rtc.leapYear = bits(data,4-5);
-      }
-
-      if(io.mode == 4 && io.index == 0x02 && bits(io.input,0-3) == 0xe) {
-        rtc.test = bits(io.input,4-7);
-      }
-
-      if(io.mode == 2 && io.index == 0x06) {
-        rtc.index = 0;
-      }
-    }
-
-    return;
-  }
-
-  if((address & 0xe001) == 0xa001) {  //$a000-bfff (odd)
-    io.select = bits(data,0-3);
-
-    if(io.select == 0x0a) {
-      io.ready = true;
-    }
-
-    return;
-  }
-}
-
-auto Cartridge::TAMA::power() -> void {
-  io = {};
-}
-
-auto Cartridge::TAMA::serialize(serializer& s) -> void {
-  s.integer(io.ready);
-  s.integer(io.select);
-  s.integer(io.mode);
-  s.integer(io.index);
-  s.integer(io.input);
-  s.integer(io.output);
-  s.integer(io.rom.bank);
-
-  s.integer(rtc.year);
-  s.integer(rtc.month);
-  s.integer(rtc.day);
-  s.integer(rtc.hour);
-  s.integer(rtc.minute);
-  s.integer(rtc.second);
-  s.integer(rtc.meridian);
-  s.integer(rtc.leapYear);
-  s.integer(rtc.hourMode);
-  s.integer(rtc.test);
-}

bsnes/gb/cartridge/tama/tama.hpp

@@ -1,33 +0,0 @@
-struct TAMA : Mapper {
-  auto second() -> void;
-  auto read(uint16 address) -> uint8;
-  auto write(uint16 address, uint8 data) -> void;
-  auto power() -> void;
-  auto serialize(serializer&) -> void;
-
-  struct IO {
-    uint1 ready;
-    uint4 select;
-    uint3 mode;
-    uint5 index;
-    uint8 input;
-    uint8 output;
-    struct ROM {
-      uint5 bank;
-    } rom;
-  } io;
-
-  struct RTC {
-    uint8 year;      //0 - 99
-    uint8 month;     //1 - 12
-    uint8 day;       //1 - 31
-    uint8 hour;      //0 - 23
-    uint8 minute;    //0 - 59
-    uint8 second;    //0 - 59
-    uint1 meridian;  //0 = AM; 1 = PM
-    uint2 leapYear;  //0 = leap year; 1-3 = non-leap year
-    uint1 hourMode;  //0 = 12-hour; 1 = 24-hour
-    uint4 test;
-    uint8 index;
-  } rtc;
-} tama;

bsnes/gb/cpu/cpu.cpp

@@ -1,129 +0,0 @@
-#include <gb/gb.hpp>
-
-namespace GameBoy {
-
-#include "io.cpp"
-#include "memory.cpp"
-#include "timing.cpp"
-#include "serialization.cpp"
-CPU cpu;
-
-auto CPU::Enter() -> void {
-  while(true) scheduler.synchronize(), cpu.main();
-}
-
-auto CPU::main() -> void {
-  interruptTest();
-  instruction();
-}
-
-auto CPU::raise(CPU::Interrupt id) -> void {
-  if(id == Interrupt::Vblank) {
-    status.interruptRequestVblank = 1;
-    if(status.interruptEnableVblank) r.halt = false;
-  }
-
-  if(id == Interrupt::Stat) {
-    status.interruptRequestStat = 1;
-    if(status.interruptEnableStat) r.halt = false;
-  }
-
-  if(id == Interrupt::Timer) {
-    status.interruptRequestTimer = 1;
-    if(status.interruptEnableTimer) r.halt = false;
-  }
-
-  if(id == Interrupt::Serial) {
-    status.interruptRequestSerial = 1;
-    if(status.interruptEnableSerial) r.halt = false;
-  }
-
-  if(id == Interrupt::Joypad) {
-    status.interruptRequestJoypad = 1;
-    if(status.interruptEnableJoypad) r.halt = r.stop = false;
-  }
-}
-
-auto CPU::interruptTest() -> void {
-  if(!r.ime) return;
-
-  if(status.interruptRequestVblank && status.interruptEnableVblank) {
-    status.interruptRequestVblank = 0;
-    return interrupt(0x0040);
-  }
-
-  if(status.interruptRequestStat && status.interruptEnableStat) {
-    status.interruptRequestStat = 0;
-    return interrupt(0x0048);
-  }
-
-  if(status.interruptRequestTimer && status.interruptEnableTimer) {
-    status.interruptRequestTimer = 0;
-    return interrupt(0x0050);
-  }
-
-  if(status.interruptRequestSerial && status.interruptEnableSerial) {
-    status.interruptRequestSerial = 0;
-    return interrupt(0x0058);
-  }
-
-  if(status.interruptRequestJoypad && status.interruptEnableJoypad) {
-    status.interruptRequestJoypad = 0;
-    return interrupt(0x0060);
-  }
-}
-
-auto CPU::stop() -> bool {
-  if(status.speedSwitch) {
-    status.speedSwitch = 0;
-    status.speedDouble ^= 1;
-    if(status.speedDouble == 0) setFrequency(4 * 1024 * 1024);
-    if(status.speedDouble == 1) setFrequency(8 * 1024 * 1024);
-    return true;
-  }
-  return false;
-}
-
-auto CPU::power() -> void {
-  create(Enter, 4 * 1024 * 1024);
-  SM83::power();
-
-  for(uint n = 0xc000; n <= 0xdfff; n++) bus.mmio[n] = this;  //WRAM
-  for(uint n = 0xe000; n <= 0xfdff; n++) bus.mmio[n] = this;  //WRAM (mirror)
-  for(uint n = 0xff80; n <= 0xfffe; n++) bus.mmio[n] = this;  //HRAM
-
-  bus.mmio[0xff00] = this;  //JOYP
-  bus.mmio[0xff01] = this;  //SB
-  bus.mmio[0xff02] = this;  //SC
-  bus.mmio[0xff04] = this;  //DIV
-  bus.mmio[0xff05] = this;  //TIMA
-  bus.mmio[0xff06] = this;  //TMA
-  bus.mmio[0xff07] = this;  //TAC
-  bus.mmio[0xff0f] = this;  //IF
-  bus.mmio[0xffff] = this;  //IE
-
-  if(Model::GameBoyColor()) {
-  bus.mmio[0xff4d] = this;  //KEY1
-  bus.mmio[0xff51] = this;  //HDMA1
-  bus.mmio[0xff52] = this;  //HDMA2
-  bus.mmio[0xff53] = this;  //HDMA3
-  bus.mmio[0xff54] = this;  //HDMA4
-  bus.mmio[0xff55] = this;  //HDMA5
-  bus.mmio[0xff56] = this;  //RP
-  bus.mmio[0xff6c] = this;  //???
-  bus.mmio[0xff70] = this;  //SVBK
-  bus.mmio[0xff72] = this;  //???
-  bus.mmio[0xff73] = this;  //???
-  bus.mmio[0xff74] = this;  //???
-  bus.mmio[0xff75] = this;  //???
-  bus.mmio[0xff76] = this;  //???
-  bus.mmio[0xff77] = this;  //???
-  }
-
-  for(auto& n : wram) n = 0x00;
-  for(auto& n : hram) n = 0x00;
-
-  status = {};
-}
-
-}

bsnes/gb/cpu/cpu.hpp

@@ -1,112 +0,0 @@
-struct CPU : Processor::SM83, Thread, MMIO {
-  enum class Interrupt : uint { Vblank, Stat, Timer, Serial, Joypad };
-
-  static auto Enter() -> void;
-  auto main() -> void;
-  auto raise(Interrupt id) -> void;
-  auto interruptTest() -> void;
-  auto stop() -> bool;
-  auto power() -> void;
-
-  auto serialize(serializer&) -> void;
-
-  //io.cpp
-  auto wramAddress(uint16 addr) const -> uint;
-  auto joypPoll() -> void;
-  auto readIO(uint16 addr) -> uint8;
-  auto writeIO(uint16 addr, uint8 data) -> void;
-
-  //memory.cpp
-  auto idle() -> void override;
-  auto read(uint16 addr) -> uint8 override;
-  auto write(uint16 addr, uint8 data) -> void override;
-  auto cycleEdge() -> void;
-  auto readDMA(uint16 addr) -> uint8;
-  auto writeDMA(uint16 addr, uint8 data) -> void;
-  auto readDebugger(uint16 addr) -> uint8 override;
-
-  //timing.cpp
-  auto step(uint clocks) -> void;
-  auto timer262144hz() -> void;
-  auto timer65536hz() -> void;
-  auto timer16384hz() -> void;
-  auto timer8192hz() -> void;
-  auto timer4096hz() -> void;
-  auto hblank() -> void;
-
-  struct Status {
-    uint22 clock;
-
-    //$ff00  JOYP
-    bool p15 = 0;
-    bool p14 = 0;
-    uint8 joyp;
-
-    //$ff01  SB
-    uint8 serialData;
-    uint serialBits = 0;
-
-    //$ff02  SC
-    bool serialTransfer = 0;
-    bool serialClock = 0;
-
-    //$ff04  DIV
-    uint16 div;
-
-    //$ff05  TIMA
-    uint8 tima;
-
-    //$ff06  TMA
-    uint8 tma;
-
-    //$ff07  TAC
-    bool timerEnable = 0;
-    uint timerClock = 0;
-
-    //$ff0f  IF
-    bool interruptRequestJoypad = 0;
-    bool interruptRequestSerial = 0;
-    bool interruptRequestTimer = 0;
-    bool interruptRequestStat = 0;
-    bool interruptRequestVblank = 0;
-
-    //$ff4d  KEY1
-    bool speedDouble = 0;
-    bool speedSwitch = 0;
-
-    //$ff51,$ff52  HDMA1,HDMA2
-    uint16 dmaSource;
-
-    //$ff53,$ff54  HDMA3,HDMA4
-    uint16 dmaTarget;
-
-    //$ff55  HDMA5
-    bool dmaMode = 0;
-    uint16 dmaLength;
-    bool dmaCompleted = 1;
-
-    //$ff6c  ???
-    uint8 ff6c;
-
-    //$ff70  SVBK
-    uint3 wramBank = 1;
-
-    //$ff72-$ff75  ???
-    uint8 ff72;
-    uint8 ff73;
-    uint8 ff74;
-    uint8 ff75;
-
-    //$ffff  IE
-    bool interruptEnableJoypad = 0;
-    bool interruptEnableSerial = 0;
-    bool interruptEnableTimer = 0;
-    bool interruptEnableStat = 0;
-    bool interruptEnableVblank = 0;
-  } status;
-
-  uint8 wram[32768];  //GB=8192, GBC=32768
-  uint8 hram[128];
-};
-
-extern CPU cpu;

bsnes/gb/cpu/io.cpp

@@ -1,283 +0,0 @@
-auto CPU::wramAddress(uint16 addr) const -> uint {
-  addr &= 0x1fff;
-  if(addr < 0x1000) return addr;
-  auto bank = status.wramBank + (status.wramBank == 0);
-  return (bank * 0x1000) + (addr & 0x0fff);
-}
-
-auto CPU::joypPoll() -> void {
-  function<auto (uint, uint, uint) -> int16> inputPoll = {&Emulator::Platform::inputPoll, platform};
-  if(Model::SuperGameBoy()) inputPoll = {&SuperGameBoyInterface::inputPoll, superGameBoy};
-
-  uint button = 0;
-  button |= inputPoll(0, 0, (uint)Input::Start) << 3;
-  button |= inputPoll(0, 0, (uint)Input::Select) << 2;
-  button |= inputPoll(0, 0, (uint)Input::B) << 1;
-  button |= inputPoll(0, 0, (uint)Input::A) << 0;
-
-  uint dpad = 0;
-  dpad |= inputPoll(0, 0, (uint)Input::Down) << 3;
-  dpad |= inputPoll(0, 0, (uint)Input::Up) << 2;
-  dpad |= inputPoll(0, 0, (uint)Input::Left) << 1;
-  dpad |= inputPoll(0, 0, (uint)Input::Right) << 0;
-
-  if(!Model::SuperGameBoy()) {
-    //D-pad pivot makes it impossible to press opposing directions at the same time
-    //however, Super Game Boy BIOS is able to set these bits together
-    if(dpad & 4) dpad &= ~8;  //disallow up+down
-    if(dpad & 2) dpad &= ~1;  //disallow left+right
-  }
-
-  status.joyp = 0x0f;
-  if(status.p15 == 1 && status.p14 == 1 && Model::SuperGameBoy()) {
-    status.joyp = superGameBoy->joypRead();
-  }
-  if(status.p15 == 0) status.joyp &= button ^ 0x0f;
-  if(status.p14 == 0) status.joyp &= dpad ^ 0x0f;
-  if(status.joyp != 0x0f) raise(Interrupt::Joypad);
-}
-
-auto CPU::readIO(uint16 addr) -> uint8 {
-  if(addr >= 0xc000 && addr <= 0xfdff) return wram[wramAddress(addr)];
-  if(addr >= 0xff80 && addr <= 0xfffe) return hram[addr & 0x7f];
-
-  if(addr == 0xff00) {  //JOYP
-    joypPoll();
-    return 0xc0
-         | (status.p15 << 5)
-         | (status.p14 << 4)
-         | (status.joyp << 0);
-  }
-
-  if(addr == 0xff01) {  //SB
-    return 0x00;
-  }
-
-  if(addr == 0xff02) {  //SC
-    return (status.serialTransfer << 7)
-         | 0x7e
-         | (status.serialClock << 0);
-  }
-
-  if(addr == 0xff04) {  //DIV
-    return status.div >> 8;
-  }
-
-  if(addr == 0xff05) {  //TIMA
-    return status.tima;
-  }
-
-  if(addr == 0xff06) {  //TMA
-    return status.tma;
-  }
-
-  if(addr == 0xff07) {  //TAC
-    return 0xf8
-         | (status.timerEnable << 2)
-         | (status.timerClock << 0);
-  }
-
-  if(addr == 0xff0f) {  //IF
-    return 0xe0
-         | (status.interruptRequestJoypad << 4)
-         | (status.interruptRequestSerial << 3)
-         | (status.interruptRequestTimer << 2)
-         | (status.interruptRequestStat << 1)
-         | (status.interruptRequestVblank << 0);
-  }
-
-  if(addr == 0xff4d) {  //KEY1
-    return (status.speedDouble << 7);
-  }
-
-  if(addr == 0xff55) {  //HDMA5
-    return (status.dmaCompleted << 7)
-         | (((status.dmaLength / 16) - 1) & 0x7f);
-  }
-
-  if(addr == 0xff56) {  //RP
-    return 0x02;
-  }
-
-  if(addr == 0xff6c) {  //???
-    return 0xfe | status.ff6c;
-  }
-
-  if(addr == 0xff70) {  //SVBK
-    return status.wramBank;
-  }
-
-  if(addr == 0xff72) {  //???
-    return status.ff72;
-  }
-
-  if(addr == 0xff73) {  //???
-    return status.ff73;
-  }
-
-  if(addr == 0xff74) {  //???
-    return status.ff74;
-  }
-
-  if(addr == 0xff75) {  //???
-    return 0x8f | status.ff75;
-  }
-
-  if(addr == 0xff76) {  //???
-    return 0xff;
-  }
-
-  if(addr == 0xff77) {  //???
-    return 0xff;
-  }
-
-  if(addr == 0xffff) {  //IE
-    return 0xe0
-         | (status.interruptEnableJoypad << 4)
-         | (status.interruptEnableSerial << 3)
-         | (status.interruptEnableTimer << 2)
-         | (status.interruptEnableStat << 1)
-         | (status.interruptEnableVblank << 0);
-  }
-
-  return 0xff;
-}
-
-auto CPU::writeIO(uint16 addr, uint8 data) -> void {
-  if(addr >= 0xc000 && addr <= 0xfdff) { wram[wramAddress(addr)] = data; return; }
-  if(addr >= 0xff80 && addr <= 0xfffe) { hram[addr & 0x7f] = data; return; }
-
-  if(addr == 0xff00) {  //JOYP
-    status.p15 = data & 0x20;
-    status.p14 = data & 0x10;
-    if(Model::SuperGameBoy()) superGameBoy->joypWrite(status.p15, status.p14);
-    return;
-  }
-
-  if(addr == 0xff01) {  //SB
-    status.serialData = data;
-    return;
-  }
-
-  if(addr == 0xff02) {  //SC
-    status.serialTransfer = data & 0x80;
-    status.serialClock = data & 0x01;
-    if(status.serialTransfer) status.serialBits = 8;
-    return;
-  }
-
-  if(addr == 0xff04) {  //DIV
-    status.div = 0;
-    return;
-  }
-
-  if(addr == 0xff05) {  //TIMA
-    status.tima = data;
-    return;
-  }
-
-  if(addr == 0xff06) {  //TMA
-    status.tma = data;
-    return;
-  }
-
-  if(addr == 0xff07) {  //TAC
-    status.timerEnable = data & 0x04;
-    status.timerClock = data & 0x03;
-    return;
-  }
-
-  if(addr == 0xff0f) {  //IF
-    status.interruptRequestJoypad = data & 0x10;
-    status.interruptRequestSerial = data & 0x08;
-    status.interruptRequestTimer = data & 0x04;
-    status.interruptRequestStat = data & 0x02;
-    status.interruptRequestVblank = data & 0x01;
-    return;
-  }
-
-  if(addr == 0xff4d) {  //KEY1
-    status.speedSwitch = data & 0x01;
-    return;
-  }
-
-  if(addr == 0xff51) {  //HDMA1
-    status.dmaSource = (status.dmaSource & 0x00ff) | (data << 8);
-    return;
-  }
-
-  if(addr == 0xff52) {  //HDMA2
-    status.dmaSource = (status.dmaSource & 0xff00) | (data & 0xf0);
-    return;
-  }
-
-  if(addr == 0xff53) {  //HDMA3
-    status.dmaTarget = (status.dmaTarget & 0x00ff) | (data << 8);
-    return;
-  }
-
-  if(addr == 0xff54) {  //HDMA4
-    status.dmaTarget = (status.dmaTarget & 0xff00) | (data & 0xf0);
-    return;
-  }
-
-  if(addr == 0xff55) {  //HDMA5
-    status.dmaMode = data & 0x80;
-    status.dmaLength = ((data & 0x7f) + 1) * 16;
-    status.dmaCompleted = !status.dmaMode;
-
-    if(status.dmaMode == 0) {
-      do {
-        for(auto n : range(16)) {
-          writeDMA(status.dmaTarget++, readDMA(status.dmaSource++));
-        }
-        step(8 << status.speedDouble);
-        status.dmaLength -= 16;
-      } while(status.dmaLength);
-    }
-    return;
-  }
-
-  if(addr == 0xff56) {  //RP
-    return;
-  }
-
-  if(addr == 0xff6c) {  //???
-    status.ff6c = data & 0x01;
-    return;
-  }
-
-  if(addr == 0xff72) {  //???
-    status.ff72 = data;
-    return;
-  }
-
-  if(addr == 0xff73) {  //???
-    status.ff73 = data;
-    return;
-  }
-
-  if(addr == 0xff74) {  //???
-    status.ff74 = data;
-    return;
-  }
-
-  if(addr == 0xff75) {  //???
-    status.ff75 = data & 0x70;
-    return;
-  }
-
-  if(addr == 0xff70) {  //SVBK
-    status.wramBank = data & 0x07;
-    return;
-  }
-
-  if(addr == 0xffff) {  //IE
-    status.interruptEnableJoypad = data & 0x10;
-    status.interruptEnableSerial = data & 0x08;
-    status.interruptEnableTimer = data & 0x04;
-    status.interruptEnableStat = data & 0x02;
-    status.interruptEnableVblank = data & 0x01;
-    return;
-  }
-}

bsnes/gb/cpu/memory.cpp

@@ -1,41 +0,0 @@
-auto CPU::idle() -> void {
-  cycleEdge();
-  step(4);
-}
-
-auto CPU::read(uint16 addr) -> uint8 {
-  cycleEdge();
-  step(4);
-  return bus.read(addr);
-}
-
-auto CPU::write(uint16 addr, uint8 data) -> void {
-  cycleEdge();
-  step(4);
-  bus.write(addr, data);
-}
-
-auto CPU::cycleEdge() -> void {
-  if(r.ei) {
-    r.ei = false;
-    r.ime = 1;
-  }
-}
-
-//VRAM DMA source can only be ROM or RAM
-auto CPU::readDMA(uint16 addr) -> uint8 {
-  if(addr < 0x8000) return bus.read(addr);  //0000-7fff
-  if(addr < 0xa000) return 0xff;            //8000-9fff
-  if(addr < 0xe000) return bus.read(addr);  //a000-dfff
-  return 0xff;                              //e000-ffff
-}
-
-//VRAM DMA target is always VRAM
-auto CPU::writeDMA(uint16 addr, uint8 data) -> void {
-  addr = 0x8000 | (addr & 0x1fff);  //8000-9fff
-  return bus.write(addr, data);
-}
-
-auto CPU::readDebugger(uint16 addr) -> uint8 {
-  return bus.read(addr);
-}

bsnes/gb/cpu/serialization.cpp

@@ -1,55 +0,0 @@
-auto CPU::serialize(serializer& s) -> void {
-  SM83::serialize(s);
-  Thread::serialize(s);
-
-  s.array(wram);
-  s.array(hram);
-
-  s.integer(status.clock);
-
-  s.integer(status.p15);
-  s.integer(status.p14);
-  s.integer(status.joyp);
-
-  s.integer(status.serialData);
-  s.integer(status.serialBits);
-
-  s.integer(status.serialTransfer);
-  s.integer(status.serialClock);
-
-  s.integer(status.div);
-  s.integer(status.tima);
-  s.integer(status.tma);
-  s.integer(status.timerEnable);
-  s.integer(status.timerClock);
-
-  s.integer(status.interruptRequestJoypad);
-  s.integer(status.interruptRequestSerial);
-  s.integer(status.interruptRequestTimer);
-  s.integer(status.interruptRequestStat);
-  s.integer(status.interruptRequestVblank);
-
-  s.integer(status.speedDouble);
-  s.integer(status.speedSwitch);
-
-  s.integer(status.dmaSource);
-  s.integer(status.dmaTarget);
-  s.integer(status.dmaMode);
-  s.integer(status.dmaLength);
-  s.integer(status.dmaCompleted);
-
-  s.integer(status.ff6c);
-
-  s.integer(status.wramBank);
-
-  s.integer(status.ff72);
-  s.integer(status.ff73);
-  s.integer(status.ff74);
-  s.integer(status.ff75);
-
-  s.integer(status.interruptEnableJoypad);
-  s.integer(status.interruptEnableSerial);
-  s.integer(status.interruptEnableTimer);
-  s.integer(status.interruptEnableStat);
-  s.integer(status.interruptEnableVblank);
-}

bsnes/gb/cpu/timing.cpp

@@ -1,84 +0,0 @@
-//70224 clocks/frame
-//  456 clocks/scanline
-//  154 scanlines/frame
-
-auto CPU::step(uint clocks) -> void {
-  for(auto n : range(clocks)) {
-    if(++status.clock == 0) {
-      cartridge.second();
-    }
-
-    //4MHz / N(hz) - 1 = mask
-    status.div++;
-    if((status.div &   15) == 0) timer262144hz();
-    if((status.div &   63) == 0)  timer65536hz();
-    if((status.div &  255) == 0)  timer16384hz();
-    if((status.div &  511) == 0)   timer8192hz();
-    if((status.div & 1023) == 0)   timer4096hz();
-
-    Thread::step(1);
-    synchronize(ppu);
-    synchronize(apu);
-    synchronize(cartridge);
-  }
-
-  if(Model::SuperGameBoy()) {
-    system._clocksExecuted += clocks;
-    scheduler.exit(Scheduler::Event::Step);
-  }
-}
-
-auto CPU::timer262144hz() -> void {
-  if(status.timerEnable && status.timerClock == 1) {
-    if(++status.tima == 0) {
-      status.tima = status.tma;
-      raise(Interrupt::Timer);
-    }
-  }
-}
-
-auto CPU::timer65536hz() -> void {
-  if(status.timerEnable && status.timerClock == 2) {
-    if(++status.tima == 0) {
-      status.tima = status.tma;
-      raise(Interrupt::Timer);
-    }
-  }
-}
-
-auto CPU::timer16384hz() -> void {
-  if(status.timerEnable && status.timerClock == 3) {
-    if(++status.tima == 0) {
-      status.tima = status.tma;
-      raise(Interrupt::Timer);
-    }
-  }
-}
-
-auto CPU::timer8192hz() -> void {
-  if(status.serialTransfer && status.serialClock) {
-    if(--status.serialBits == 0) {
-      status.serialTransfer = 0;
-      raise(Interrupt::Serial);
-    }
-  }
-}
-
-auto CPU::timer4096hz() -> void {
-  if(status.timerEnable && status.timerClock == 0) {
-    if(++status.tima == 0) {
-      status.tima = status.tma;
-      raise(Interrupt::Timer);
-    }
-  }
-}
-
-auto CPU::hblank() -> void {
-  if(status.dmaMode == 1 && status.dmaLength && ppu.status.ly < 144) {
-    for(auto n : range(16)) {
-      writeDMA(status.dmaTarget++, readDMA(status.dmaSource++));
-      status.dmaLength--;
-      if(n & 1) step(1 << status.speedDouble);
-    }
-  }
-}

bsnes/gb/gb.hpp

@@ -1,46 +0,0 @@
-#pragma once
-
-//license: GPLv3
-//started: 2010-12-27
-
-#include <emulator/emulator.hpp>
-#include <emulator/thread.hpp>
-#include <emulator/scheduler.hpp>
-#include <emulator/cheat.hpp>
-
-#include <processor/sm83/sm83.hpp>
-
-namespace GameBoy {
-  #define platform Emulator::platform
-  namespace File = Emulator::File;
-  using Scheduler = Emulator::Scheduler;
-  using Cheat = Emulator::Cheat;
-  extern Scheduler scheduler;
-  extern Cheat cheat;
-
-  struct Thread : Emulator::Thread {
-    auto create(auto (*entrypoint)() -> void, double frequency) -> void {
-      Emulator::Thread::create(entrypoint, frequency);
-      scheduler.append(*this);
-    }
-
-    inline auto synchronize(Thread& thread) -> void {
-      if(clock() >= thread.clock()) scheduler.resume(thread);
-    }
-  };
-
-  struct Model {
-    inline static auto GameBoy() -> bool;
-    inline static auto GameBoyColor() -> bool;
-    inline static auto SuperGameBoy() -> bool;
-  };
-
-  #include <gb/memory/memory.hpp>
-  #include <gb/system/system.hpp>
-  #include <gb/cartridge/cartridge.hpp>
-  #include <gb/cpu/cpu.hpp>
-  #include <gb/ppu/ppu.hpp>
-  #include <gb/apu/apu.hpp>
-}
-
-#include <gb/interface/interface.hpp>

bsnes/gb/interface/game-boy-color.cpp

@@ -1,23 +0,0 @@
-auto GameBoyColorInterface::information() -> Information {
-  Information information;
-  information.manufacturer = "Nintendo";
-  information.name         = "Game Boy Color";
-  information.extension    = "gbc";
-  return information;
-}
-
-auto GameBoyColorInterface::color(uint32 color) -> uint64 {
-  uint r = bits(color, 0- 4);
-  uint g = bits(color, 5- 9);
-  uint b = bits(color,10-14);
-
-  uint64 R = image::normalize(r, 5, 16);
-  uint64 G = image::normalize(g, 5, 16);
-  uint64 B = image::normalize(b, 5, 16);
-
-  return R << 32 | G << 16 | B << 0;
-}
-
-auto GameBoyColorInterface::load() -> bool {
-  return system.load(this, System::Model::GameBoyColor);
-}

bsnes/gb/interface/game-boy.cpp

@@ -1,16 +0,0 @@
-auto GameBoyInterface::information() -> Information {
-  Information information;
-  information.manufacturer = "Nintendo";
-  information.name         = "Game Boy";
-  information.extension    = "gb";
-  return information;
-}
-
-auto GameBoyInterface::color(uint32 color) -> uint64 {
-  uint64 L = image::normalize(3 - color, 2, 16);
-  return L << 32 | L << 16 | L << 0;
-}
-
-auto GameBoyInterface::load() -> bool {
-  return system.load(this, System::Model::GameBoy);
-}

bsnes/gb/interface/interface.cpp

@@ -1,123 +0,0 @@
-#include <gb/gb.hpp>
-
-namespace GameBoy {
-
-SuperGameBoyInterface* superGameBoy = nullptr;
-#include "game-boy.cpp"
-#include "game-boy-color.cpp"
-
-auto Interface::display() -> Display {
-  Display display;
-  display.type   = Display::Type::LCD;
-  display.colors = Model::GameBoyColor() ? 1 << 15 : 1 << 2;
-  display.width  = 160;
-  display.height = 144;
-  display.internalWidth  = 160;
-  display.internalHeight = 144;
-  display.aspectCorrection = 1.0;
-  return display;
-}
-
-auto Interface::loaded() -> bool {
-  return system.loaded();
-}
-
-auto Interface::hashes() -> vector<string> {
-  return {cartridge.hash()};
-}
-
-auto Interface::manifests() -> vector<string> {
-  return {cartridge.manifest()};
-}
-
-auto Interface::titles() -> vector<string> {
-  return {cartridge.title()};
-}
-
-auto Interface::save() -> void {
-  system.save();
-}
-
-auto Interface::unload() -> void {
-  save();
-  system.unload();
-}
-
-auto Interface::ports() -> vector<Port> { return {
-  {ID::Port::Hardware, "Hardware"},
-  {ID::Port::Cartridge, "Cartridge"}};
-}
-
-auto Interface::devices(uint port) -> vector<Device> {
-  if(port == ID::Port::Hardware) return {
-    {ID::Device::Controls, "Controls"}
-  };
-
-  if(port == ID::Port::Cartridge) return {
-    {ID::Device::MBC5, "MBC5"},
-    {ID::Device::MBC7, "MBC7"}
-  };
-
-  return {};
-}
-
-auto Interface::inputs(uint device) -> vector<Input> {
-  using Type = Input::Type;
-
-  if(device == ID::Device::Controls) return {
-    {Type::Hat,     "Up"    },
-    {Type::Hat,     "Down"  },
-    {Type::Hat,     "Left"  },
-    {Type::Hat,     "Right" },
-    {Type::Button,  "B"     },
-    {Type::Button,  "A"     },
-    {Type::Control, "Select"},
-    {Type::Control, "Start" }
-  };
-
-  if(device == ID::Device::MBC5) return {
-    {Type::Rumble, "Rumble"}
-  };
-
-  if(device == ID::Device::MBC7) return {
-    {Type::Axis, "Accelerometer - X-axis"},
-    {Type::Axis, "Accelerometer - Y-axis"}
-  };
-
-  return {};
-}
-
-auto Interface::power() -> void {
-  system.power();
-}
-
-auto Interface::run() -> void {
-  system.run();
-}
-
-auto Interface::serialize() -> serializer {
-  system.runToSave();
-  return system.serialize();
-}
-
-auto Interface::unserialize(serializer& s) -> bool {
-  return system.unserialize(s);
-}
-
-auto Interface::cheats(const vector<string>& list) -> void {
-  cheat.assign(list);
-}
-
-auto Interface::cap(const string& name) -> bool {
-  return false;
-}
-
-auto Interface::get(const string& name) -> any {
-  return {};
-}
-
-auto Interface::set(const string& name, const any& value) -> bool {
-  return false;
-}
-
-}

bsnes/gb/interface/interface.hpp

@@ -1,79 +0,0 @@
-namespace GameBoy {
-
-struct ID {
-  enum : uint {
-    System,
-    GameBoy,
-    SuperGameBoy,
-    GameBoyColor,
-  };
-
-  struct Port { enum : uint {
-    Hardware,
-    Cartridge,
-  };};
-
-  struct Device { enum : uint {
-    Controls,
-    MBC5,
-    MBC7,
-  };};
-};
-
-struct Interface : Emulator::Interface {
-  auto display() -> Display override;
-
-  auto loaded() -> bool override;
-  auto hashes() -> vector<string> override;
-  auto manifests() -> vector<string> override;
-  auto titles() -> vector<string> override;
-
-  auto save() -> void override;
-  auto unload() -> void override;
-
-  auto ports() -> vector<Port> override;
-  auto devices(uint port) -> vector<Device> override;
-  auto inputs(uint device) -> vector<Input> override;
-
-  auto power() -> void override;
-  auto run() -> void override;
-
-  auto serialize() -> serializer override;
-  auto unserialize(serializer&) -> bool override;
-
-  auto cheats(const vector<string>&) -> void override;
-
-  auto cap(const string& name) -> bool override;
-  auto get(const string& name) -> any override;
-  auto set(const string& name, const any& value) -> bool override;
-};
-
-struct GameBoyInterface : Interface {
-  auto information() -> Information override;
-
-  auto color(uint32 color) -> uint64 override;
-
-  auto load() -> bool override;
-};
-
-struct GameBoyColorInterface : Interface {
-  auto information() -> Information override;
-
-  auto color(uint32 color) -> uint64 override;
-
-  auto load() -> bool override;
-};
-
-struct SuperGameBoyInterface {
-  virtual auto audioSample(const float* samples, uint channels) -> void = 0;
-  virtual auto inputPoll(uint port, uint device, uint id) -> int16 = 0;
-
-  virtual auto lcdScanline() -> void = 0;
-  virtual auto lcdOutput(uint2 color) -> void = 0;
-  virtual auto joypRead() -> uint4 = 0;
-  virtual auto joypWrite(bool p15, bool p14) -> void = 0;
-};
-
-extern SuperGameBoyInterface* superGameBoy;
-
-}

bsnes/gb/memory/memory.cpp

@@ -1,56 +0,0 @@
-#include <gb/gb.hpp>
-
-namespace GameBoy {
-
-Unmapped unmapped;
-Bus bus;
-
-Memory::~Memory() {
-  free();
-}
-
-auto Memory::operator[](uint addr) -> uint8& {
-  return data[addr];
-}
-
-auto Memory::allocate(uint size_) -> void {
-  free();
-  size = size_;
-  data = new uint8[size];
-}
-
-auto Memory::copy(const uint8* data_, unsigned size_) -> void {
-  free();
-  size = size_;
-  data = new uint8[size];
-  memcpy(data, data_, size);
-}
-
-auto Memory::free() -> void {
-  if(data) {
-    delete[] data;
-    data = nullptr;
-  }
-}
-
-//
-
-auto Bus::read(uint16 addr) -> uint8 {
-  uint8 data = mmio[addr]->readIO(addr);
-
-  if(cheat) {
-    if(auto result = cheat.find(addr, data)) return result();
-  }
-
-  return data;
-}
-
-auto Bus::write(uint16 addr, uint8 data) -> void {
-  mmio[addr]->writeIO(addr, data);
-}
-
-auto Bus::power() -> void {
-  for(auto n : range(65536)) mmio[n] = &unmapped;
-}
-
-}

bsnes/gb/memory/memory.hpp

@@ -1,32 +0,0 @@
-struct Memory {
-  ~Memory();
-
-  auto operator[](uint addr) -> uint8&;
-  auto allocate(uint size) -> void;
-  auto copy(const uint8* data, uint size) -> void;
-  auto free() -> void;
-
-  uint8* data = nullptr;
-  uint size = 0;
-};
-
-struct MMIO {
-  virtual auto readIO(uint16 addr) -> uint8 = 0;
-  virtual auto writeIO(uint16 addr, uint8 data) -> void = 0;
-};
-
-struct Unmapped : MMIO {
-  auto readIO(uint16) -> uint8 { return 0xff; }
-  auto writeIO(uint16, uint8) -> void {}
-};
-
-struct Bus {
-  auto read(uint16 addr) -> uint8;
-  auto write(uint16 addr, uint8 data) -> void;
-  auto power() -> void;
-
-  MMIO* mmio[65536];
-};
-
-extern Unmapped unmapped;
-extern Bus bus;

bsnes/gb/ppu/cgb.cpp

@@ -1,158 +0,0 @@
-//BG attributes:
-//0x80: 0 = OAM priority, 1 = BG priority
-//0x40: vertical flip
-//0x20: horizontal flip
-//0x08: VRAM bank#
-//0x07: palette#
-
-//OB attributes:
-//0x80: 0 = OBJ above BG, 1 = BG above OBJ
-//0x40: vertical flip
-//0x20: horizontal flip
-//0x08: VRAM bank#
-//0x07: palette#
-
-auto PPU::readTileCGB(bool select, uint x, uint y, uint& attr, uint& data) -> void {
-  uint tmaddr = 0x1800 + (select << 10);
-  tmaddr += (((y >> 3) << 5) + (x >> 3)) & 0x03ff;
-
-  uint tile = vram[0x0000 + tmaddr];
-  attr = vram[0x2000 + tmaddr];
-
-  uint tdaddr = attr & 0x08 ? 0x2000 : 0x0000;
-  if(status.bgTiledataSelect == 0) {
-    tdaddr += 0x1000 + ((int8)tile << 4);
-  } else {
-    tdaddr += 0x0000 + (tile << 4);
-  }
-
-  y &= 7;
-  if(attr & 0x40) y ^= 7;
-  tdaddr += y << 1;
-
-  data  = vram[tdaddr++] << 0;
-  data |= vram[tdaddr++] << 8;
-  if(attr & 0x20) data = hflip(data);
-}
-
-auto PPU::scanlineCGB() -> void {
-  px = 0;
-
-  const uint Height = (status.obSize == 0 ? 8 : 16);
-  sprites = 0;
-
-  //find first ten sprites on this scanline
-  for(uint n = 0; n < 40 * 4; n += 4) {
-    Sprite& s = sprite[sprites];
-    s.y = oam[n + 0] - 16;
-    s.x = oam[n + 1] -  8;
-    s.tile = oam[n + 2] & ~status.obSize;
-    s.attr = oam[n + 3];
-
-    s.y = status.ly - s.y;
-    if(s.y >= Height) continue;
-
-    if(s.attr & 0x40) s.y ^= (Height - 1);
-    uint tdaddr = (s.attr & 0x08 ? 0x2000 : 0x0000) + (s.tile << 4) + (s.y << 1);
-    s.data  = vram[tdaddr + 0] << 0;
-    s.data |= vram[tdaddr + 1] << 8;
-    if(s.attr & 0x20) s.data = hflip(s.data);
-
-    if(++sprites == 10) break;
-  }
-}
-
-auto PPU::runCGB() -> void {
-  ob.color = 0;
-  ob.palette = 0;
-  ob.priority = 0;
-
-  uint color = 0x7fff;
-  runBackgroundCGB();
-  if(status.windowDisplayEnable) runWindowCGB();
-  if(status.obEnable) runObjectsCGB();
-
-  if(ob.palette == 0) {
-    color = bg.color;
-  } else if(bg.palette == 0) {
-    color = ob.color;
-  } else if(status.bgEnable == 0) {
-    color = ob.color;
-  } else if(bg.priority) {
-    color = bg.color;
-  } else if(ob.priority) {
-    color = ob.color;
-  } else {
-    color = bg.color;
-  }
-
-  uint32* output = screen + status.ly * 160 + px++;
-  *output = color;
-}
-
-auto PPU::runBackgroundCGB() -> void {
-  uint scrolly = (status.ly + status.scy) & 255;
-  uint scrollx = (px + status.scx) & 255;
-  uint tx = scrollx & 7;
-  if(tx == 0 || px == 0) readTileCGB(status.bgTilemapSelect, scrollx, scrolly, background.attr, background.data);
-
-  uint index = 0;
-  index |= (background.data & (0x0080 >> tx)) ? 1 : 0;
-  index |= (background.data & (0x8000 >> tx)) ? 2 : 0;
-  uint palette = ((background.attr & 0x07) << 2) + index;
-  uint color = 0;
-  color |= bgpd[(palette << 1) + 0] << 0;
-  color |= bgpd[(palette << 1) + 1] << 8;
-  color &= 0x7fff;
-
-  bg.color = color;
-  bg.palette = index;
-  bg.priority = background.attr & 0x80;
-}
-
-auto PPU::runWindowCGB() -> void {
-  uint scrolly = status.ly - status.wy;
-  uint scrollx = px + 7 - status.wx;
-  if(scrolly >= 144u) return;  //also matches underflow (scrolly < 0)
-  if(scrollx >= 160u) return;  //also matches underflow (scrollx < 0)
-  uint tx = scrollx & 7;
-  if(tx == 0 || px == 0) readTileCGB(status.windowTilemapSelect, scrollx, scrolly, window.attr, window.data);
-
-  uint index = 0;
-  index |= (window.data & (0x0080 >> tx)) ? 1 : 0;
-  index |= (window.data & (0x8000 >> tx)) ? 2 : 0;
-  uint palette = ((window.attr & 0x07) << 2) + index;
-  uint color = 0;
-  color |= bgpd[(palette << 1) + 0] << 0;
-  color |= bgpd[(palette << 1) + 1] << 8;
-  color &= 0x7fff;
-
-  bg.color = color;
-  bg.palette = index;
-  bg.priority = window.attr & 0x80;
-}
-
-auto PPU::runObjectsCGB() -> void {
-  //render backwards, so that first sprite has priority
-  for(int n = sprites - 1; n >= 0; n--) {
-    Sprite& s = sprite[n];
-
-    int tx = px - s.x;
-    if(tx < 0 || tx > 7) continue;
-
-    uint index = 0;
-    index |= (s.data & (0x0080 >> tx)) ? 1 : 0;
-    index |= (s.data & (0x8000 >> tx)) ? 2 : 0;
-    if(index == 0) continue;
-
-    uint palette = ((s.attr & 0x07) << 2) + index;
-    uint color = 0;
-    color |= obpd[(palette << 1) + 0] << 0;
-    color |= obpd[(palette << 1) + 1] << 8;
-    color &= 0x7fff;
-
-    ob.color = color;
-    ob.palette = index;
-    ob.priority = !(s.attr & 0x80);
-  }
-}

bsnes/gb/ppu/dmg.cpp

@@ -1,128 +0,0 @@
-//OB attributes:
-//0x80: 0 = OBJ above BG, 1 = BG above OBJ
-//0x40: vertical flip
-//0x20: horizontal flip
-//0x10: palette#
-
-auto PPU::readTileDMG(bool select, uint x, uint y, uint& data) -> void {
-  uint tmaddr = 0x1800 + (select << 10), tdaddr;
-  tmaddr += (((y >> 3) << 5) + (x >> 3)) & 0x03ff;
-  if(status.bgTiledataSelect == 0) {
-    tdaddr = 0x1000 + ((int8)vram[tmaddr] << 4);
-  } else {
-    tdaddr = 0x0000 + (vram[tmaddr] << 4);
-  }
-  tdaddr += (y & 7) << 1;
-  data  = vram[tdaddr + 0] << 0;
-  data |= vram[tdaddr + 1] << 8;
-}
-
-auto PPU::scanlineDMG() -> void {
-  px = 0;
-
-  const uint Height = (status.obSize == 0 ? 8 : 16);
-  sprites = 0;
-
-  //find first ten sprites on this scanline
-  for(uint n = 0; n < 40 * 4; n += 4) {
-    Sprite& s = sprite[sprites];
-    s.y = oam[n + 0] - 16;
-    s.x = oam[n + 1] -  8;
-    s.tile = oam[n + 2] & ~status.obSize;
-    s.attr = oam[n + 3];
-
-    s.y = status.ly - s.y;
-    if(s.y >= Height) continue;
-
-    if(s.attr & 0x40) s.y ^= (Height - 1);
-    uint tdaddr = (s.tile << 4) + (s.y << 1);
-    s.data  = vram[tdaddr + 0] << 0;
-    s.data |= vram[tdaddr + 1] << 8;
-    if(s.attr & 0x20) s.data = hflip(s.data);
-
-    if(++sprites == 10) break;
-  }
-
-  //sort by X-coordinate
-  for(uint lo = 0; lo < sprites; lo++) {
-    for(uint hi = lo + 1; hi < sprites; hi++) {
-      if(sprite[hi].x < sprite[lo].x) swap(sprite[lo], sprite[hi]);
-    }
-  }
-}
-
-auto PPU::runDMG() -> void {
-  bg.color = 0;
-  bg.palette = 0;
-
-  ob.color = 0;
-  ob.palette = 0;
-
-  uint color = 0;
-  if(status.bgEnable) runBackgroundDMG();
-  if(status.windowDisplayEnable) runWindowDMG();
-  if(status.obEnable) runObjectsDMG();
-
-  if(ob.palette == 0) {
-    color = bg.color;
-  } else if(bg.palette == 0) {
-    color = ob.color;
-  } else if(ob.priority) {
-    color = ob.color;
-  } else {
-    color = bg.color;
-  }
-
-  uint32* output = screen + status.ly * 160 + px++;
-  *output = color;
-  if(Model::SuperGameBoy()) superGameBoy->lcdOutput(color);
-}
-
-auto PPU::runBackgroundDMG() -> void {
-  uint scrolly = (status.ly + status.scy) & 255;
-  uint scrollx = (px + status.scx) & 255;
-  uint tx = scrollx & 7;
-  if(tx == 0 || px == 0) readTileDMG(status.bgTilemapSelect, scrollx, scrolly, background.data);
-
-  uint index = 0;
-  index |= (background.data & (0x0080 >> tx)) ? 1 : 0;
-  index |= (background.data & (0x8000 >> tx)) ? 2 : 0;
-
-  bg.color = bgp[index];
-  bg.palette = index;
-}
-
-auto PPU::runWindowDMG() -> void {
-  uint scrolly = status.ly - status.wy;
-  uint scrollx = px + 7 - status.wx;
-  if(scrolly >= 144u) return;  //also matches underflow (scrolly < 0)
-  if(scrollx >= 160u) return;  //also matches underflow (scrollx < 0)
-  uint tx = scrollx & 7;
-  if(tx == 0 || px == 0) readTileDMG(status.windowTilemapSelect, scrollx, scrolly, window.data);
-
-  uint index = 0;
-  index |= (window.data & (0x0080 >> tx)) ? 1 : 0;
-  index |= (window.data & (0x8000 >> tx)) ? 2 : 0;
-
-  bg.color = bgp[index];
-  bg.palette = index;
-}
-
-auto PPU::runObjectsDMG() -> void {
-  //render backwards, so that first sprite has priority
-  for(int n = sprites - 1; n >= 0; n--) {
-    Sprite& s = sprite[n];
-
-    int tx = px - s.x;
-    if(tx < 0 || tx > 7) continue;
-
-    uint index = 0;
-    index |= (s.data & (0x0080 >> tx)) ? 1 : 0;
-    index |= (s.data & (0x8000 >> tx)) ? 2 : 0;
-    if(index == 0) continue;
-
-    ob.color = obp[(bool)(s.attr & 0x10)][index];
-    ob.palette = index;
-    ob.priority = !(s.attr & 0x80);
-  }
-}

bsnes/gb/ppu/io.cpp

@@ -1,240 +0,0 @@
-auto PPU::vramAddress(uint16 addr) const -> uint {
-  return status.vramBank << 13 | (uint13)addr;
-}
-
-auto PPU::readIO(uint16 addr) -> uint8 {
-  if(addr >= 0x8000 && addr <= 0x9fff) {
-    return vram[vramAddress(addr)];
-  }
-
-  if(addr >= 0xfe00 && addr <= 0xfe9f) {
-    if(status.dmaActive && status.dmaClock >= 8) return 0xff;
-    return oam[addr & 0xff];
-  }
-
-  if(addr == 0xff40) {  //LCDC
-    return (status.displayEnable << 7)
-         | (status.windowTilemapSelect << 6)
-         | (status.windowDisplayEnable << 5)
-         | (status.bgTiledataSelect << 4)
-         | (status.bgTilemapSelect << 3)
-         | (status.obSize << 2)
-         | (status.obEnable << 1)
-         | (status.bgEnable << 0);
-  }
-
-  if(addr == 0xff41) {  //STAT
-    return (status.interruptLYC << 6)
-         | (status.interruptOAM << 5)
-         | (status.interruptVblank << 4)
-         | (status.interruptHblank << 3)
-         | ((status.ly == status.lyc) << 2)
-         | (status.mode << 0);
-  }
-
-  if(addr == 0xff42) {  //SCY
-    return status.scy;
-  }
-
-  if(addr == 0xff43) {  //SCX
-    return status.scx;
-  }
-
-  if(addr == 0xff44) {  //LY
-    return status.ly;
-  }
-
-  if(addr == 0xff45) {  //LYC
-    return status.lyc;
-  }
-
-  if(addr == 0xff47) {  //BGP
-    return (bgp[3] << 6)
-         | (bgp[2] << 4)
-         | (bgp[1] << 2)
-         | (bgp[0] << 0);
-  }
-
-  if(addr == 0xff48) {  //OBP0
-    return (obp[0][3] << 6)
-         | (obp[0][2] << 4)
-         | (obp[0][1] << 2)
-         | (obp[0][0] << 0);
-  }
-
-  if(addr == 0xff49) {  //OBP1
-    return (obp[1][3] << 6)
-         | (obp[1][2] << 4)
-         | (obp[1][1] << 2)
-         | (obp[1][0] << 0);
-  }
-
-  if(addr == 0xff4a) {  //WY
-    return status.wy;
-  }
-
-  if(addr == 0xff4b) {  //WX
-    return status.wx;
-  }
-
-  if(addr == 0xff4f) {  //VBK
-    return status.vramBank;
-  }
-
-  if(addr == 0xff68) {  //BGPI
-    return status.bgpiIncrement << 7 | status.bgpi;
-  }
-
-  if(addr == 0xff69) {  //BGPD
-    return bgpd[status.bgpi];
-  }
-
-  if(addr == 0xff6a) {  //OBPI
-    return status.obpiIncrement << 7 | status.obpi;
-  }
-
-  if(addr == 0xff6b) {  //OBPD
-    return obpd[status.obpi];
-  }
-
-  return 0xff;  //should never occur
-}
-
-auto PPU::writeIO(uint16 addr, uint8 data) -> void {
-  if(addr >= 0x8000 && addr <= 0x9fff) {
-    vram[vramAddress(addr)] = data;
-    return;
-  }
-
-  if(addr >= 0xfe00 && addr <= 0xfe9f) {
-    if(status.dmaActive && status.dmaClock >= 8) return;
-    oam[addr & 0xff] = data;
-    return;
-  }
-
-  if(addr == 0xff40) {  //LCDC
-    if(status.displayEnable && !(data & 0x80)) {
-      status.mode = 0;
-      status.ly = 0;
-      status.lx = 0;
-
-      //restart cothread to begin new frame
-      auto clock = Thread::clock();
-      create(Enter, 4 * 1024 * 1024);
-      Thread::setClock(clock);
-    }
-
-    status.displayEnable = data & 0x80;
-    status.windowTilemapSelect = data & 0x40;
-    status.windowDisplayEnable = data & 0x20;
-    status.bgTiledataSelect = data & 0x10;
-    status.bgTilemapSelect = data & 0x08;
-    status.obSize = data & 0x04;
-    status.obEnable = data & 0x02;
-    status.bgEnable = data & 0x01;
-    return;
-  }
-
-  if(addr == 0xff41) {  //STAT
-    status.interruptLYC = data & 0x40;
-    status.interruptOAM = data & 0x20;
-    status.interruptVblank = data & 0x10;
-    status.interruptHblank = data & 0x08;
-
-    //hardware bug: writes to STAT on DMG,SGB during vblank triggers STAT IRQ
-    //note: this behavior isn't entirely correct; more research is needed ...
-    if(!Model::GameBoyColor() && status.mode == 1) {
-      cpu.raise(CPU::Interrupt::Stat);
-    }
-
-    return;
-  }
-
-  if(addr == 0xff42) {  //SCY
-    status.scy = data;
-    return;
-  }
-
-  if(addr == 0xff43) {  //SCX
-    status.scx = data;
-    return;
-  }
-
-  if(addr == 0xff44) {  //LY
-    status.ly = 0;
-    return;
-  }
-
-  if(addr == 0xff45) {  //LYC
-    status.lyc = data;
-    return;
-  }
-
-  if(addr == 0xff46) {  //DMA
-    status.dmaActive = true;
-    status.dmaClock = 0;
-    status.dmaBank = data;
-    return;
-  }
-
-  if(addr == 0xff47) {  //BGP
-    bgp[3] = (data >> 6) & 3;
-    bgp[2] = (data >> 4) & 3;
-    bgp[1] = (data >> 2) & 3;
-    bgp[0] = (data >> 0) & 3;
-    return;
-  }
-
-  if(addr == 0xff48) {  //OBP0
-    obp[0][3] = (data >> 6) & 3;
-    obp[0][2] = (data >> 4) & 3;
-    obp[0][1] = (data >> 2) & 3;
-    obp[0][0] = (data >> 0) & 3;
-    return;
-  }
-
-  if(addr == 0xff49) {  //OBP1
-    obp[1][3] = (data >> 6) & 3;
-    obp[1][2] = (data >> 4) & 3;
-    obp[1][1] = (data >> 2) & 3;
-    obp[1][0] = (data >> 0) & 3;
-    return;
-  }
-
-  if(addr == 0xff4a) {  //WY
-    status.wy = data;
-    return;
-  }
-
-  if(addr == 0xff4b) {  //WX
-    status.wx = data;
-    return;
-  }
-
-  if(addr == 0xff4f) {  //VBK
-    status.vramBank = data & 1;
-    return;
-  }
-
-  if(addr == 0xff68) {  //BGPI
-    status.bgpiIncrement = data & 0x80;
-    status.bgpi = data & 0x3f;
-    return;
-  }
-
-  if(addr == 0xff69) {  //BGPD
-    bgpd[status.bgpi] = data;
-    if(status.bgpiIncrement) status.bgpi++;
-    return;
-  }
-
-  if(addr == 0xff6a) {  //OBPI
-    status.obpiIncrement = data & 0x80;
-    status.obpi = data & 0x3f;
-  }
-
-  if(addr == 0xff6b) {  //OBPD
-    obpd[status.obpi] = data;
-    if(status.obpiIncrement) status.obpi++;
-  }
-}

bsnes/gb/ppu/ppu.cpp

@@ -1,182 +0,0 @@
-#include <gb/gb.hpp>
-
-namespace GameBoy {
-
-PPU ppu;
-#include "io.cpp"
-#include "dmg.cpp"
-#include "cgb.cpp"
-#include "serialization.cpp"
-
-auto PPU::Enter() -> void {
-  while(true) scheduler.synchronize(), ppu.main();
-}
-
-auto PPU::main() -> void {
-  if(!status.displayEnable) {
-    for(uint n : range(160 * 144)) screen[n] = Model::GameBoy() ? 0 : 0x7fff;
-    Thread::step(154 * 456);
-    synchronize(cpu);
-    scheduler.exit(Scheduler::Event::Frame);
-    return;
-  }
-
-  status.lx = 0;
-  if(Model::SuperGameBoy()) superGameBoy->lcdScanline();
-
-  if(status.ly <= 143) {
-    status.mode = 2;
-    scanline();
-    step(92);
-
-    status.mode = 3;
-    for(auto n : range(160)) {
-      run();
-      step(1);
-    }
-
-    status.mode = 0;
-    cpu.hblank();
-    step(204);
-  } else {
-    status.mode = 1;
-    step(456);
-  }
-
-  status.ly++;
-
-  if(status.ly == 144) {
-    cpu.raise(CPU::Interrupt::Vblank);
-    scheduler.exit(Scheduler::Event::Frame);
-  }
-
-  if(status.ly == 154) {
-    status.ly = 0;
-  }
-}
-
-auto PPU::stat() -> void {
-  bool irq = status.irq;
-
-  status.irq  = status.interruptHblank && status.mode == 0;
-  status.irq |= status.interruptVblank && status.mode == 1;
-  status.irq |= status.interruptOAM    && status.mode == 2;
-  status.irq |= status.interruptLYC    && coincidence();
-
-  if(!irq && status.irq) cpu.raise(CPU::Interrupt::Stat);
-}
-
-auto PPU::coincidence() -> bool {
-  uint ly = status.ly;
-  if(ly == 153 && status.lx >= 92) ly = 0;  //LYC=0 triggers early during LY=153
-  return ly == status.lyc;
-}
-
-auto PPU::refresh() -> void {
-  if(!Model::SuperGameBoy()) Emulator::video.refresh(screen, 160 * sizeof(uint32), 160, 144);
-}
-
-auto PPU::step(uint clocks) -> void {
-  while(clocks--) {
-    stat();
-    if(status.dmaActive) {
-      uint hi = status.dmaClock++;
-      uint lo = hi & (cpu.status.speedDouble ? 1 : 3);
-      hi >>= cpu.status.speedDouble ? 1 : 2;
-      if(lo == 0) {
-        if(hi == 0) {
-          //warm-up
-        } else if(hi == 161) {
-          //cool-down; disable
-          status.dmaActive = false;
-        } else {
-          oam[hi - 1] = bus.read(status.dmaBank << 8 | hi - 1);
-        }
-      }
-    }
-
-    status.lx++;
-    Thread::step(1);
-    synchronize(cpu);
-  }
-}
-
-auto PPU::hflip(uint data) const -> uint {
-  return (data & 0x8080) >> 7 | (data & 0x4040) >> 5
-       | (data & 0x2020) >> 3 | (data & 0x1010) >> 1
-       | (data & 0x0808) << 1 | (data & 0x0404) << 3
-       | (data & 0x0202) << 5 | (data & 0x0101) << 7;
-}
-
-auto PPU::power() -> void {
-  create(Enter, 4 * 1024 * 1024);
-
-  if(Model::GameBoyColor()) {
-    scanline = {&PPU::scanlineCGB, this};
-    run = {&PPU::runCGB, this};
-  } else {
-    scanline = {&PPU::scanlineDMG, this};
-    run = {&PPU::runDMG, this};
-  }
-
-  for(uint n = 0x8000; n <= 0x9fff; n++) bus.mmio[n] = this;  //VRAM
-  for(uint n = 0xfe00; n <= 0xfe9f; n++) bus.mmio[n] = this;  //OAM
-
-  bus.mmio[0xff40] = this;  //LCDC
-  bus.mmio[0xff41] = this;  //STAT
-  bus.mmio[0xff42] = this;  //SCY
-  bus.mmio[0xff43] = this;  //SCX
-  bus.mmio[0xff44] = this;  //LY
-  bus.mmio[0xff45] = this;  //LYC
-  bus.mmio[0xff46] = this;  //DMA
-  bus.mmio[0xff47] = this;  //BGP
-  bus.mmio[0xff48] = this;  //OBP0
-  bus.mmio[0xff49] = this;  //OBP1
-  bus.mmio[0xff4a] = this;  //WY
-  bus.mmio[0xff4b] = this;  //WX
-
-  if(Model::GameBoyColor()) {
-  bus.mmio[0xff4f] = this;  //VBK
-  bus.mmio[0xff68] = this;  //BGPI
-  bus.mmio[0xff69] = this;  //BGPD
-  bus.mmio[0xff6a] = this;  //OBPI
-  bus.mmio[0xff6b] = this;  //OBPD
-  }
-
-  for(auto& n : vram) n = 0x00;
-  for(auto& n : oam) n = 0x00;
-  for(auto& n : bgp) n = 0x00;
-  for(auto& n : obp[0]) n = 3;
-  for(auto& n : obp[1]) n = 3;
-  for(auto& n : bgpd) n = 0x0000;
-  for(auto& n : obpd) n = 0x0000;
-
-  status = {};
-
-  for(auto& n : screen) n = 0;
-
-  bg.color = 0;
-  bg.palette = 0;
-  bg.priority = 0;
-
-  ob.color = 0;
-  ob.palette = 0;
-  ob.priority = 0;
-
-  for(auto& s : sprite) {
-    s.x = 0;
-    s.y = 0;
-    s.tile = 0;
-    s.attr = 0;
-    s.data = 0;
-  }
-  sprites = 0;
-
-  background.attr = 0;
-  background.data = 0;
-
-  window.attr = 0;
-  window.data = 0;
-}
-
-}

bsnes/gb/ppu/ppu.hpp

@@ -1,132 +0,0 @@
-struct PPU : Thread, MMIO {
-  static auto Enter() -> void;
-  auto main() -> void;
-  auto stat() -> void;
-  auto coincidence() -> bool;
-  auto refresh() -> void;
-  auto step(uint clocks) -> void;
-
-  auto hflip(uint data) const -> uint;
-
-  //io.cpp
-  auto vramAddress(uint16 addr) const -> uint;
-  auto readIO(uint16 addr) -> uint8;
-  auto writeIO(uint16 addr, uint8 data) -> void;
-
-  //dmg.cpp
-  auto readTileDMG(bool select, uint x, uint y, uint& data) -> void;
-  auto scanlineDMG() -> void;
-  auto runDMG() -> void;
-  auto runBackgroundDMG() -> void;
-  auto runWindowDMG() -> void;
-  auto runObjectsDMG() -> void;
-
-  //cgb.cpp
-  auto readTileCGB(bool select, uint x, uint y, uint& attr, uint& data) -> void;
-  auto scanlineCGB() -> void;
-  auto runCGB() -> void;
-  auto runBackgroundCGB() -> void;
-  auto runWindowCGB() -> void;
-  auto runObjectsCGB() -> void;
-
-  auto power() -> void;
-
-  auto serialize(serializer&) -> void;
-
-  uint8 vram[16384];  //GB = 8192, GBC = 16384
-  uint8 oam[160];
-  uint8 bgp[4];
-  uint8 obp[2][4];
-  uint8 bgpd[64];
-  uint8 obpd[64];
-
-  function<auto () -> void> scanline;
-  function<auto () -> void> run;
-
-  struct Status {
-    bool irq = 0;  //STAT IRQ line
-    uint lx = 0;
-
-    //$ff40  LCDC
-    bool displayEnable = 0;
-    bool windowTilemapSelect = 0;
-    bool windowDisplayEnable = 0;
-    bool bgTiledataSelect = 0;
-    bool bgTilemapSelect = 0;
-    bool obSize = 0;
-    bool obEnable = 0;
-    bool bgEnable = 0;
-
-    //$ff41  STAT
-    bool interruptLYC = 0;
-    bool interruptOAM = 0;
-    bool interruptVblank = 0;
-    bool interruptHblank = 0;
-    uint2 mode;
-
-    //$ff42  SCY
-    uint8 scy;
-
-    //$ff43  SCX
-    uint8 scx;
-
-    //$ff44  LY
-    uint8 ly;
-
-    //$ff45  LYC
-    uint8 lyc;
-
-    //$ff46  DMA
-    bool dmaActive = 0;
-    uint dmaClock = 0;
-    uint8 dmaBank;
-
-    //$ff4a  WY
-    uint8 wy;
-
-    //$ff4b  WX
-    uint8 wx;
-
-    //$ff4f  VBK
-    bool vramBank = 0;
-
-    //$ff68  BGPI
-    bool bgpiIncrement = 0;
-    uint6 bgpi;
-
-    //$ff6a  OBPI
-    bool obpiIncrement = 0;
-    uint8 obpi;
-  } status;
-
-  uint32 screen[160 * 144];
-
-  struct Pixel {
-    uint16 color;
-    uint8 palette;
-    bool priority = 0;
-  };
-  Pixel bg;
-  Pixel ob;
-
-  struct Sprite {
-    uint x = 0;
-    uint y = 0;
-    uint tile = 0;
-    uint attr = 0;
-    uint data = 0;
-  };
-  Sprite sprite[10];
-  uint sprites = 0;
-
-  uint px = 0;
-
-  struct Background {
-    uint attr = 0;
-    uint data = 0;
-  };
-  Background background;
-  Background window;
-};
-
-extern PPU ppu;

bsnes/gb/ppu/serialization.cpp

@@ -1,74 +0,0 @@
-auto PPU::serialize(serializer& s) -> void {
-  Thread::serialize(s);
-
-  s.array(vram);
-  s.array(oam);
-  s.array(bgp);
-  s.array(obp[0]);
-  s.array(obp[1]);
-  s.array(bgpd);
-  s.array(obpd);
-
-  s.integer(status.irq);
-  s.integer(status.lx);
-
-  s.integer(status.displayEnable);
-  s.integer(status.windowTilemapSelect);
-  s.integer(status.windowDisplayEnable);
-  s.integer(status.bgTiledataSelect);
-  s.integer(status.bgTilemapSelect);
-  s.integer(status.obSize);
-  s.integer(status.obEnable);
-  s.integer(status.bgEnable);
-
-  s.integer(status.interruptLYC);
-  s.integer(status.interruptOAM);
-  s.integer(status.interruptVblank);
-  s.integer(status.interruptHblank);
-  s.integer(status.mode);
-
-  s.integer(status.scy);
-  s.integer(status.scx);
-
-  s.integer(status.ly);
-  s.integer(status.lyc);
-
-  s.integer(status.dmaActive);
-  s.integer(status.dmaClock);
-  s.integer(status.dmaBank);
-
-  s.integer(status.wy);
-  s.integer(status.wx);
-
-  s.integer(status.vramBank);
-
-  s.integer(status.bgpiIncrement);
-  s.integer(status.bgpi);
-
-  s.integer(status.obpiIncrement);
-  s.integer(status.obpi);
-
-  s.array(screen);
-
-  s.integer(bg.color);
-  s.integer(bg.palette);
-  s.integer(bg.priority);
-
-  s.integer(ob.color);
-  s.integer(ob.palette);
-  s.integer(ob.priority);
-
-  for(auto& o : sprite) {
-    s.integer(o.x);
-    s.integer(o.y);
-    s.integer(o.tile);
-    s.integer(o.attr);
-  }
-  s.integer(sprites);
-
-  s.integer(background.attr);
-  s.integer(background.data);
-
-  s.integer(window.attr);
-  s.integer(window.data);
-}

bsnes/gb/system/serialization.cpp

@@ -1,59 +0,0 @@
-auto System::serialize() -> serializer {
-  serializer s(_serializeSize);
-
-  uint signature = 0x31545342;
-  char version[16] = {0};
-  char description[512] = {0};
-  memory::copy(&version, (const char*)Emulator::SerializerVersion, Emulator::SerializerVersion.size());
-
-  s.integer(signature);
-  s.array(version);
-  s.array(description);
-
-  serializeAll(s);
-  return s;
-}
-
-auto System::unserialize(serializer& s) -> bool {
-  uint signature;
-  char version[16] = {0};
-  char description[512];
-
-  s.integer(signature);
-  s.array(version);
-  s.array(description);
-
-  if(signature != 0x31545342) return false;
-  if(string{version} != Emulator::SerializerVersion) return false;
-
-  power();
-  serializeAll(s);
-  return true;
-}
-
-auto System::serialize(serializer& s) -> void {
-  s.integer(_clocksExecuted);
-}
-
-auto System::serializeAll(serializer& s) -> void {
-  cartridge.serialize(s);
-  system.serialize(s);
-  cpu.serialize(s);
-  ppu.serialize(s);
-  apu.serialize(s);
-}
-
-auto System::serializeInit() -> void {
-  serializer s;
-
-  uint signature = 0;
-  char version[16] = {0};
-  char description[512] = {0};
-
-  s.integer(signature);
-  s.array(version);
-  s.array(description);
-
-  serializeAll(s);
-  _serializeSize = s.size();
-}