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Writes to SVBK should work before the boot ROM is disabled

This commit is contained in:
Lior Halphon 2021-10-23 23:51:48 +03:00
parent 18007f0e53
commit 5b9746084d
1 changed files with 5 additions and 6 deletions
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11
Core/memory.c
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@ -1243,12 +1243,11 @@ static void write_high_memory(GB_gameboy_t *gb, uint16_t addr, uint8_t value)
gb->io_registers[GB_IO_DMA] = value;
return;
case GB_IO_SVBK:
if (!gb->cgb_mode) {
return;
}
gb->cgb_ram_bank = value & 0x7;
if (!gb->cgb_ram_bank) {
gb->cgb_ram_bank++;
if (gb->cgb_mode || (GB_is_cgb(gb) && !gb->boot_rom_finished)) {
gb->cgb_ram_bank = value & 0x7;
if (!gb->cgb_ram_bank) {
gb->cgb_ram_bank++;
}
}
return;
case GB_IO_VBK: