122 lines
2.3 KiB
C#
122 lines
2.3 KiB
C#
using System;
|
|
using System.Collections.Generic;
|
|
using System.Linq;
|
|
using System.Text;
|
|
|
|
namespace BizHawk.Emulation.Consoles.Atari._2600
|
|
{
|
|
class mE0 : MapperBase
|
|
{
|
|
int toggle1 = 0;
|
|
int toggle2 = 0;
|
|
int toggle3 = 0;
|
|
int toggle4 = 0;
|
|
|
|
public override byte ReadMemory(ushort addr)
|
|
{
|
|
Address(addr);
|
|
if (addr < 0x1000) return base.ReadMemory(addr);
|
|
else if (addr < 0x1400) return core.rom[toggle1 * 1024 + (addr & 0x3FF)];
|
|
else if (addr < 0x1800) return core.rom[toggle2 * 1024 + (addr & 0x3FF)];
|
|
else if (addr < 0x1C00) return core.rom[toggle3 * 1024 + (addr & 0x3FF)];
|
|
else
|
|
return core.rom[7 * 1024 + (addr & 0x3FF)]; //7 because final bank is always set to last
|
|
}
|
|
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("toggle1", ref toggle1);
|
|
ser.Sync("toggle2", ref toggle2);
|
|
ser.Sync("toggle3", ref toggle3);
|
|
ser.Sync("toggle4", ref toggle4);
|
|
}
|
|
|
|
void Address(ushort addr)
|
|
{
|
|
switch (addr)
|
|
{
|
|
case 0x1FE0:
|
|
toggle1 = 0;
|
|
break;
|
|
case 0x1FE1:
|
|
toggle1 = 1;
|
|
break;
|
|
case 0x1FE2:
|
|
toggle1 = 2;
|
|
break;
|
|
case 0x1FE3:
|
|
toggle1 = 3;
|
|
break;
|
|
case 0x1FE4:
|
|
toggle1 = 4;
|
|
break;
|
|
case 0x1FE5:
|
|
toggle1 = 5;
|
|
break;
|
|
case 0x1FE6:
|
|
toggle1 = 6;
|
|
break;
|
|
case 0x1FE7:
|
|
toggle1 = 7;
|
|
break;
|
|
|
|
case 0x1FE8:
|
|
toggle1 = 0;
|
|
break;
|
|
case 0x1FE9:
|
|
toggle1 = 1;
|
|
break;
|
|
case 0x1FEA:
|
|
toggle1 = 2;
|
|
break;
|
|
case 0x1FEB:
|
|
toggle1 = 3;
|
|
break;
|
|
case 0x1FEC:
|
|
toggle1 = 4;
|
|
break;
|
|
case 0x1FED:
|
|
toggle1 = 5;
|
|
break;
|
|
case 0x1FEE:
|
|
toggle1 = 6;
|
|
break;
|
|
case 0x1FEF:
|
|
toggle1 = 7;
|
|
break;
|
|
|
|
case 0x1FF0:
|
|
toggle1 = 0;
|
|
break;
|
|
case 0x1FF1:
|
|
toggle1 = 1;
|
|
break;
|
|
case 0x1FF2:
|
|
toggle1 = 2;
|
|
break;
|
|
case 0x1FF3:
|
|
toggle1 = 3;
|
|
break;
|
|
case 0x1FF4:
|
|
toggle1 = 4;
|
|
break;
|
|
case 0x1FF5:
|
|
toggle1 = 5;
|
|
break;
|
|
case 0x1FF6:
|
|
toggle1 = 6;
|
|
break;
|
|
case 0x1FF7:
|
|
toggle1 = 7;
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|