mirror of https://github.com/bsnes-emu/bsnes.git
56 lines
1.4 KiB
C++
56 lines
1.4 KiB
C++
struct KonamiVRC3 : Board {
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KonamiVRC3(Markup::Node& document) : Board(document), vrc3(*this) {
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settings.mirror = document["board/mirror/mode"].text() == "vertical" ? 1 : 0;
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}
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auto main() -> void {
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vrc3.main();
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}
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auto prg_read(uint addr) -> uint8 {
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if((addr & 0xe000) == 0x6000) return prgram.read(addr & 0x1fff);
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if(addr & 0x8000) return prgrom.read(vrc3.prg_addr(addr));
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return cpu.mdr();
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}
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auto prg_write(uint addr, uint8 data) -> void {
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if((addr & 0xe000) == 0x6000) return prgram.write(addr & 0x1fff, data);
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if(addr & 0x8000) return vrc3.reg_write(addr, data);
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}
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auto chr_read(uint addr) -> uint8 {
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if(addr & 0x2000) {
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if(settings.mirror == 0) addr = ((addr & 0x0800) >> 1) | (addr & 0x03ff);
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return ppu.readCIRAM(addr & 0x07ff);
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}
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return chrram.read(addr);
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}
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auto chr_write(uint addr, uint8 data) -> void {
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if(addr & 0x2000) {
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if(settings.mirror == 0) addr = ((addr & 0x0800) >> 1) | (addr & 0x03ff);
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return ppu.writeCIRAM(addr & 0x07ff, data);
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}
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return chrram.write(addr, data);
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}
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auto power() -> void {
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vrc3.power();
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}
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auto reset() -> void {
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vrc3.reset();
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}
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auto serialize(serializer& s) -> void {
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Board::serialize(s);
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vrc3.serialize(s);
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}
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struct Settings {
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bool mirror; //0 = horizontal, 1 = vertical
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} settings;
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VRC3 vrc3;
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};
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