62 lines
1.3 KiB
C#
62 lines
1.3 KiB
C#
using BizHawk.Common;
|
|
|
|
namespace BizHawk.Emulation.Consoles.Nintendo
|
|
{
|
|
public sealed class Mapper249 : MMC3Board_Base
|
|
{
|
|
bool piratecrap = false;
|
|
|
|
// mmc3 with pirate crap bolt on
|
|
public override bool Configure(NES.EDetectionOrigin origin)
|
|
{
|
|
switch (Cart.board_type)
|
|
{
|
|
case "MAPPER249":
|
|
break;
|
|
default:
|
|
return false;
|
|
}
|
|
AssertPrg(256, 512);
|
|
AssertChr(256);
|
|
Cart.wram_size = 8;
|
|
BaseSetup();
|
|
return true;
|
|
}
|
|
|
|
public override void SyncState(Serializer ser)
|
|
{
|
|
base.SyncState(ser);
|
|
ser.Sync("piratecrap", ref piratecrap);
|
|
}
|
|
|
|
public override void WriteEXP(int addr, byte value)
|
|
{
|
|
piratecrap = value.Bit(1);
|
|
}
|
|
|
|
protected override int Get_CHRBank_1K(int addr)
|
|
{
|
|
int v = base.Get_CHRBank_1K(addr);
|
|
if (piratecrap)
|
|
v = v & 3 | v >> 1 & 4 | v >> 4 & 8 | v >> 2 & 0x10 | v << 3 & 0x20 | v << 2 & 0xC0;
|
|
return v;
|
|
}
|
|
|
|
protected override int Get_PRGBank_8K(int addr)
|
|
{
|
|
int v = base.Get_PRGBank_8K(addr);
|
|
if (piratecrap)
|
|
{
|
|
if (v < 0x20)
|
|
v = v & 1 | v >> 3 & 2 | v >> 1 & 4 | v << 2 & 8 | v << 2 & 0x10;
|
|
else
|
|
{
|
|
v -= 0x20;
|
|
v = v & 3 | v >> 1 & 4 | v >> 4 & 8 | v >> 2 & 0x10 | v << 3 & 0x20 | v << 2 & 0xC0;
|
|
}
|
|
}
|
|
return v;
|
|
}
|
|
}
|
|
}
|