bsnes/fc/cartridge/board/nes-hkrom.cpp

49 lines
1005 B
C++

struct NES_HKROM : Board {
MMC6 mmc6;
void main() {
mmc6.main();
}
uint8 prg_read(unsigned addr) {
if((addr & 0xf000) == 0x7000) return mmc6.ram_read(addr);
if(addr & 0x8000) return prgrom.read(mmc6.prg_addr(addr));
return cpu.mdr();
}
void prg_write(unsigned addr, uint8 data) {
if((addr & 0xf000) == 0x7000) return mmc6.ram_write(addr, data);
if(addr & 0x8000) return mmc6.reg_write(addr, data);
}
uint8 chr_read(unsigned addr) {
mmc6.irq_test(addr);
if(addr & 0x2000) return ppu.ciram_read(mmc6.ciram_addr(addr));
return Board::chr_read(mmc6.chr_addr(addr));
}
void chr_write(unsigned addr, uint8 data) {
mmc6.irq_test(addr);
if(addr & 0x2000) return ppu.ciram_write(mmc6.ciram_addr(addr), data);
return Board::chr_write(mmc6.chr_addr(addr), data);
}
void power() {
mmc6.power();
}
void reset() {
mmc6.reset();
}
void serialize(serializer& s) {
Board::serialize(s);
mmc6.serialize(s);
}
NES_HKROM(Markup::Node& document) : Board(document), mmc6(*this) {
}
};