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78 lines
3.3 KiB
C
78 lines
3.3 KiB
C
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#include <stdbool.h>
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#include "gb.h"
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const GB_cartridge_t GB_cart_defs[256] = {
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// From http://gbdev.gg8.se/wiki/articles/The_Cartridge_Header#0147_-_Cartridge_Type
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/* MBC RAM BAT. RTC RUMB. */
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{ GB_NO_MBC, false, false, false, false}, // 00h ROM ONLY
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{ GB_MBC1 , false, false, false, false}, // 01h MBC1
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{ GB_MBC1 , true , false, false, false}, // 02h MBC1+RAM
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{ GB_MBC1 , true , true , false, false}, // 03h MBC1+RAM+BATTERY
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[5] =
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{ GB_MBC2 , true , false, false, false}, // 05h MBC2
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{ GB_MBC2 , true , true , false, false}, // 06h MBC2+BATTERY
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[8] =
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{ GB_NO_MBC, true , false, false, false}, // 08h ROM+RAM
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{ GB_NO_MBC, true , true , false, false}, // 09h ROM+RAM+BATTERY
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[0xB] =
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// Todo: What are these?
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{ GB_NO_MBC, false, false, false, false}, // 0Bh MMM01
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{ GB_NO_MBC, false, false, false, false}, // 0Ch MMM01+RAM
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{ GB_NO_MBC, false, false, false, false}, // 0Dh MMM01+RAM+BATTERY
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[0xF] =
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{ GB_MBC3 , false, true, true , false}, // 0Fh MBC3+TIMER+BATTERY
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{ GB_MBC3 , true , true, true , false}, // 10h MBC3+TIMER+RAM+BATTERY
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{ GB_MBC3 , false, false, false, false}, // 11h MBC3
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{ GB_MBC3 , true , false, false, false}, // 12h MBC3+RAM
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{ GB_MBC3 , true , true , false, false}, // 13h MBC3+RAM+BATTERY
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[0x15] =
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// Todo: Do these exist?
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{ GB_MBC4 , false, false, false, false}, // 15h MBC4
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{ GB_MBC4 , true , false, false, false}, // 16h MBC4+RAM
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{ GB_MBC4 , true , true , false, false}, // 17h MBC4+RAM+BATTERY
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[0x19] =
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{ GB_MBC5 , false, false, false, false}, // 19h MBC5
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{ GB_MBC5 , true , false, false, false}, // 1Ah MBC5+RAM
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{ GB_MBC5 , true , true , false, false}, // 1Bh MBC5+RAM+BATTERY
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{ GB_MBC5 , false, false, false, true }, // 1Ch MBC5+RUMBLE
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{ GB_MBC5 , true , false, false, true }, // 1Dh MBC5+RUMBLE+RAM
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{ GB_MBC5 , true , true , false, true }, // 1Eh MBC5+RUMBLE+RAM+BATTERY
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[0xFC] =
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// Todo: What are these?
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{ GB_NO_MBC, false, false, false, false}, // FCh POCKET CAMERA
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{ GB_NO_MBC, false, false, false, false}, // FDh BANDAI TAMA5
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{ GB_NO_MBC, false, false, false, false}, // FEh HuC3
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{ GB_NO_MBC, true , true , false, false}, // FFh HuC1+RAM+BATTERY
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};
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void GB_update_mbc_mappings(GB_gameboy_t *gb)
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{
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switch (gb->cartridge_type->mbc_type) {
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case GB_NO_MBC: case GB_MBC4: return;
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case GB_MBC1:
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/* Standard MBC1 wiring: */
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if (gb->mbc1.mode == 0) {
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gb->mbc_rom_bank = gb->mbc1.bank_low | (gb->mbc1.bank_high << 5);
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gb->mbc_ram_bank = 0;
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}
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else {
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gb->mbc_rom_bank = gb->mbc1.bank_low;
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gb->mbc_ram_bank = gb->mbc1.bank_high;
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}
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break;
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case GB_MBC2:
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gb->mbc_rom_bank = gb->mbc2.rom_bank;
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break;
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case GB_MBC3:
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gb->mbc_rom_bank = gb->mbc3.rom_bank;
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gb->mbc_ram_bank = gb->mbc3.ram_bank;
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break;
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case GB_MBC5:
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gb->mbc_rom_bank = gb->mbc5.rom_bank_low | (gb->mbc5.rom_bank_high << 8);
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gb->mbc_ram_bank = gb->mbc5.ram_bank;
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break;
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}
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if (gb->mbc_rom_bank == 0 && gb->cartridge_type->mbc_type != GB_MBC5) {
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gb->mbc_rom_bank = 1;
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}
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}
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