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Forgot to amend the last commit, it was broken.

This commit is contained in:
Lior Halphon 2017-06-21 01:07:11 +03:00
parent aefca34b39
commit efbc385417
2 changed files with 31 additions and 25 deletions
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3
Core/gb.h
View File

@ -279,7 +279,8 @@ struct GB_gameboy_internal_s {
union {
struct {
uint8_t bank_low:5;
uint8_t bank_high:3;
uint8_t bank_high:2;
uint8_t padding:1; // Save state compatibility with 0.9
uint8_t mode:1;
} mbc1;

53
Core/mbc.c
View File

@ -46,41 +46,49 @@ void GB_update_mbc_mappings(GB_gameboy_t *gb)
switch (gb->cartridge_type->mbc_type) {
case GB_NO_MBC: return;
case GB_MBC1:
if (gb->mbc1.mode == 0) {
switch (gb->mbc1_wiring) {
case GB_STANDARD_MBC1_WIRING:
gb->mbc_rom_bank = gb->mbc1.bank_low | (gb->mbc1.bank_high << 5);
switch (gb->mbc1_wiring) {
case GB_STANDARD_MBC1_WIRING:
gb->mbc_rom_bank = gb->mbc1.bank_low | (gb->mbc1.bank_high << 5);
if (gb->mbc1.mode == 0) {
gb->mbc_ram_bank = 0;
gb->mbc_rom0_bank = 0;
break;
case GB_MBC1M_WIRING:
gb->mbc_rom_bank = (gb->mbc1.bank_low & 0xF) | (gb->mbc1.bank_high << 4);
gb->mbc_ram_bank = 0;
gb->mbc_rom0_bank = 0;
}
}
else {
switch (gb->mbc1_wiring) {
case GB_STANDARD_MBC1_WIRING:
gb->mbc_rom_bank = gb->mbc1.bank_low | (gb->mbc1.bank_high << 5);
}
else {
gb->mbc_ram_bank = gb->mbc1.bank_high;
gb->mbc_rom0_bank = gb->mbc1.bank_high << 5;
break;
case GB_MBC1M_WIRING:
gb->mbc_rom_bank = (gb->mbc1.bank_low & 0xF) | (gb->mbc1.bank_high << 4);
}
if ((gb->mbc_rom_bank & 0x1F) == 0) {
gb->mbc_rom_bank++;
}
break;
case GB_MBC1M_WIRING:
gb->mbc_rom_bank = (gb->mbc1.bank_low & 0xF) | (gb->mbc1.bank_high << 4);
if (gb->mbc1.mode == 0) {
gb->mbc_ram_bank = 0;
gb->mbc_rom0_bank = 0;
}
else {
gb->mbc_rom0_bank = gb->mbc1.bank_high << 4;
gb->mbc_ram_bank = 0;
}
}
if ((gb->mbc1.bank_low & 0x1F) == 0) {
gb->mbc_rom_bank++;
}
break;
}
break;
case GB_MBC2:
gb->mbc_rom_bank = gb->mbc2.rom_bank;
if ((gb->mbc_rom_bank & 0xF) == 0) {
gb->mbc_rom_bank = 1;
}
break;
case GB_MBC3:
gb->mbc_rom_bank = gb->mbc3.rom_bank;
gb->mbc_ram_bank = gb->mbc3.ram_bank;
if (gb->mbc_rom_bank == 0) {
gb->mbc_rom_bank = 1;
}
break;
case GB_MBC5:
gb->mbc_rom_bank = gb->mbc5.rom_bank_low | (gb->mbc5.rom_bank_high << 8);
@ -101,9 +109,6 @@ void GB_update_mbc_mappings(GB_gameboy_t *gb)
gb->mbc_ram_bank = gb->huc3.ram_bank;
break;
}
if ((gb->mbc_rom_bank & 0x1F) == 0 && gb->cartridge_type->mbc_type != GB_MBC5 && gb->cartridge_type->mbc_type != GB_HUC3) {
gb->mbc_rom_bank++;
}
}
void GB_configure_cart(GB_gameboy_t *gb)