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mbc5 passing

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This commit is contained in:
Samuel Walker
2025-05-30 12:45:50 -06:00
parent 9f0715c825
commit 1a2fac899d
1 changed files with 26 additions and 4 deletions
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28
lib/cart.c
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@ -22,7 +22,7 @@ bool cart_mbc3() {
}
bool cart_mbc5() {
return BETWEEN(ctx.header->type, 25, 30)
return BETWEEN(ctx.header->type, 25, 30);
}
bool cart_mbc() {
@ -30,7 +30,7 @@ bool cart_mbc() {
}
bool cart_battery() {
return ctx.header->type == 3 || BETWEEN(ctx.header->type, 15, 16) || ctx.header->type == 19 || ctx.header->type == 6;
return ctx.header->type == 3 || BETWEEN(ctx.header->type, 15, 16) || ctx.header->type == 19 || ctx.header->type == 6 || ctx.header->type == 26 || ctx.header->type == 29;
}
static const char *ROM_TYPES[] = {
@ -355,6 +355,26 @@ void cart_write(u16 address, u8 value){
}
ctx.rom_bank_value = value;
ctx.rom_bank_x = ctx.rom_data + (0x4000 * ctx.rom_bank_value);
} else if(cart_mbc5()) {
if(address < 0x3000){
switch(ctx.header->rom_size) {
case 0: value &= 0b1; break;
case 1: value &= 0b11; break;
case 2: value &= 0b111; break;
case 3: value &= 0b1111; break;
case 4: value &= 0b11111; break;
case 5: value &= 0b111111; break;
case 6: value &= 0b1111111; break;
default: break;
}
ctx.rom_bank_value = value;
ctx.rom_bank_x = ctx.rom_data + (0x4000 * ctx.rom_bank_value + ctx.rom_bank_value_2);
} else {
if(ctx.header->rom_size == 8) {
ctx.rom_bank_value_2 = (value & 0b1) << 8;
ctx.rom_bank_x = ctx.rom_data + (0x4000 * ctx.rom_bank_value + ctx.rom_bank_value_2);
}
}
} else {
//printf("Bank Value: %d\n", value);
value &= 0b11111;
@ -397,7 +417,9 @@ void cart_write(u16 address, u8 value){
return;
}
ctx.ram_bank_value = value & 0b11;
if(ctx.ram_banking) {
if(cart_mbc5())
ctx.ram_bank_value = value & 0xF;
if(ctx.ram_banking || cart_mbc5()) {
if(cart_need_save()) {
cart_battery_save();
}