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Failed mapper 215

This commit is contained in:
adelikat 2016-09-18 14:44:07 -04:00
parent cf8201dbe3
commit 48e6594cc2
2 changed files with 137 additions and 0 deletions
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1
BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
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@ -691,6 +691,7 @@
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper199.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper205.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper208.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper215.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper219.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper238.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper245.cs" />

136
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper215.cs Normal file
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@ -0,0 +1,136 @@
using BizHawk.Common;
namespace BizHawk.Emulation.Cores.Nintendo.NES
{
public class Mapper215 : MMC3Board_Base
{
private ByteBuffer exRegs = new ByteBuffer(4);
private byte cmd;
private int prg_mask_32k;
private readonly byte[,] regperm = new byte[,]
{
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 0, 2, 6, 1, 7, 3, 4, 5 },
{ 0, 5, 4, 1, 7, 2, 6, 3 }, // unused
{ 0, 6, 3, 7, 5, 2, 4, 1 },
{ 0, 2, 5, 3, 6, 1, 7, 4 },
{ 0, 1, 2, 3, 4, 5, 6, 7 }, // empty
{ 0, 1, 2, 3, 4, 5, 6, 7 }, // empty
{ 0, 1, 2, 3, 4, 5, 6, 7 }, // empty
};
private readonly byte[,] adrperm = new byte[,]
{
{ 0, 1, 2, 3, 4, 5, 6, 7 },
{ 3, 2, 0, 4, 1, 5, 6, 7 },
{ 0, 1, 2, 3, 4, 5, 6, 7 }, // unused
{ 5, 0, 1, 2, 3, 7, 6, 4 },
{ 3, 1, 0, 5, 2, 4, 6, 7 },
{ 0, 1, 2, 3, 4, 5, 6, 7 }, // empty
{ 0, 1, 2, 3, 4, 5, 6, 7 }, // empty
{ 0, 1, 2, 3, 4, 5, 6, 7 }, // empty
};
public override bool Configure(NES.EDetectionOrigin origin)
{
switch (Cart.board_type)
{
case "MAPPER215":
break;
default:
return false;
}
BaseSetup();
exRegs[1] = 3;
prg_mask_32k = Cart.prg_size / 32 - 1;
return true;
}
public override void SyncState(Serializer ser)
{
base.SyncState(ser);
ser.Sync("exRegs", ref exRegs);
ser.Sync("cmd", ref cmd);
}
public override void WriteEXP(int addr, byte value)
{
if (addr == 0x1000) { exRegs[0] = value; }
if (addr == 0x1001) { exRegs[1] = value; }
if (addr == 0x1007) { exRegs[2] = value; }
base.WriteEXP(addr, value);
}
//public override void WritePRG(int addr, byte value)
//{
// cmd = value;
// int addr2 = addr + 0x8000;
// byte dat = value;
// var b = exRegs[2];
// byte adr = (byte)( adrperm[exRegs[2], ((addr2 >> 12) & 6) | (addr2 & 1)]);
// short addr3 = (short)((adr & 1) | ((adr & 6) << 12) | 0x8000);
// if (adr < 4)
// {
// if (adr == 0)
// {
// dat = (byte)((dat & 0xC0) | (regperm[exRegs[2], dat & 7]));
// }
// }
// base.WritePRG(addr, dat);
//}
public override byte ReadPRG(int addr)
{
if ((exRegs[0] & 0x40) > 0)
{
byte sbank = (byte)(exRegs[1] & 0x10);
if ((exRegs[0] & 0x80) > 0)
{
byte bank =(byte)(((exRegs[1] & 3) << 4) | (exRegs[0] & 0x7) | (sbank >> 1));
if ((exRegs[0] & 0x20) > 0)
{
return ROM[(bank << 15) + addr];
}
else
{
return ROM[(bank << 14) + (addr & 0x3FFF)];
}
}
else
{
return ROM[(((exRegs[1] & 3) << 5) | (cmd & 0x0F) | sbank) + addr];
}
}
else
{
if ((exRegs[0] & 0x80) > 0)
{
byte bank = (byte)(((exRegs[1] & 3) << 4) | (exRegs[0] & 0xF));
if ((exRegs[0] & 0x20) > 0)
{
return ROM[((bank >> 1) << 15) + addr];
}
else
{
return ROM[(bank << 14) + (addr & 0x3FFF)];
}
}
else
{
int bank32k = (((exRegs[1] & 3) << 5) | (cmd & 0x1F));
bank32k &= prg_mask_32k;
return ROM[(bank32k << 15) + addr];
}
}
}
}
}