59 lines
1.1 KiB
C#
59 lines
1.1 KiB
C#
using BizHawk.Common;
|
|
|
|
namespace BizHawk.Emulation.Cores.Nintendo.NES
|
|
{
|
|
internal sealed class Mapper241 : NesBoardBase
|
|
{
|
|
//163 is for nanjing games
|
|
|
|
//configuration
|
|
int prg_bank_mask_32k;
|
|
|
|
//state
|
|
byte[] prg_banks_32k = new byte[1];
|
|
|
|
public override bool Configure(EDetectionOrigin origin)
|
|
{
|
|
//configure
|
|
switch (Cart.BoardType)
|
|
{
|
|
case "MAPPER241":
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
prg_bank_mask_32k = (Cart.PrgSize / 32) - 1;
|
|
|
|
prg_banks_32k[0] = 0;
|
|
|
|
SetMirrorType(Cart.PadH, Cart.PadV);
|
|
|
|
return true;
|
|
}
|
|
|
|
public override byte ReadExp(int addr)
|
|
{
|
|
//some kind of magic number..
|
|
return 0x50;
|
|
}
|
|
|
|
public override void WritePrg(int addr, byte value)
|
|
{
|
|
prg_banks_32k[0] = value;
|
|
ApplyMemoryMapMask(prg_bank_mask_32k, prg_banks_32k);
|
|
}
|
|
|
|
public override byte ReadPrg(int addr)
|
|
{
|
|
addr = ApplyMemoryMap(15, prg_banks_32k, addr);
|
|
return Rom[addr];
|
|
}
|
|
|
|
public override void SyncState(Serializer ser)
|
|
{
|
|
base.SyncState(ser);
|
|
ser.Sync(nameof(prg_banks_32k), ref prg_banks_32k, false);
|
|
}
|
|
}
|
|
}
|