AxibugEmuOnline/AxibugEmuOnline.Client/Assets/Runtime/Mapper/UxROM.cs
2024-06-28 18:08:25 +08:00

23 lines
817 B
C#

namespace AxibugEmuOnline.Client.UNES.Mapper
{
[MapperDef(2)]
public class UxROM : BaseMapper
{
protected int _bankOffset;
public UxROM(Emulator emulator) : base(emulator)
{
}
public override void InitializeMemoryMap(CPU cpu)
{
cpu.MapReadHandler(0x6000, 0x7FFF, address => _prgRAM[address - 0x6000]);
cpu.MapReadHandler(0x8000, 0xBFFF, address => _prgROM[_bankOffset + (address - 0x8000)]);
cpu.MapReadHandler(0xC000, 0xFFFF, address => _prgROM[_prgROM.Length - 0x4000 + (address - 0xC000)]);
cpu.MapWriteHandler(0x6000, 0x7FFF, (address, val) => _prgRAM[address - 0x6000] = val);
cpu.MapWriteHandler(0x8000, 0xFFFF, (address, val) => _bankOffset = (val & 0xF) * 0x4000);
}
}
}