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Atari - implement mapper EF

This commit is contained in:
adelikat 2012-04-29 21:12:58 +00:00
parent e0a6ae5264
commit 592b73ea5a
1 changed files with 38 additions and 0 deletions
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38
BizHawk.Emulation/Consoles/Atari/2600/Mappers/mEF.cs
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@ -17,6 +17,44 @@ namespace BizHawk.Emulation.Consoles.Atari._2600
class mEF : MapperBase class mEF : MapperBase
{ {
int toggle = 0;
public override byte ReadMemory(ushort addr)
{
Address(addr);
if (addr < 0x1000) return base.ReadMemory(addr);
return core.rom[toggle * 4 * 1024 + (addr & 0xFFF)];
}
public override void WriteMemory(ushort addr, byte value)
{
Address(addr);
if (addr < 0x1000) base.WriteMemory(addr, value);
}
public override void SyncState(Serializer ser)
{
base.SyncState(ser);
ser.Sync("toggle", ref toggle);
}
void Address(ushort addr)
{
if (addr == 0x1FE0) toggle = 0;
if (addr == 0x1FE1) toggle = 1;
if (addr == 0x1FE2) toggle = 2;
if (addr == 0x1FE3) toggle = 3;
if (addr == 0x1FE4) toggle = 4;
if (addr == 0x1FE5) toggle = 5;
if (addr == 0x1FE6) toggle = 6;
if (addr == 0x1FE7) toggle = 7;
if (addr == 0x1FE8) toggle = 8;
if (addr == 0x1FE9) toggle = 9;
if (addr == 0x1FEA) toggle = 10;
if (addr == 0x1FEB) toggle = 11;
if (addr == 0x1FEC) toggle = 12;
if (addr == 0x1FED) toggle = 13;
if (addr == 0x1FEE) toggle = 14;
if (addr == 0x1FEF) toggle = 15;
}
} }
} }