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NES - add support for the UNIF_BMC-T-262 board

This commit is contained in:
adelikat 2015-08-09 20:41:51 -04:00
parent 637d2c95c0
commit 0f8544b051
2 changed files with 75 additions and 0 deletions
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1
BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
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@ -631,6 +631,7 @@
<Compile Include="Consoles\Nintendo\NES\Boards\Taito_X1_017.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\TENGEN-800032.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\TENGEN_800008.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\UNIF_BMC-T-262.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\UxROM.cs">
<SubType>Code</SubType>
</Compile>

74
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/UNIF_BMC-T-262.cs Normal file
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@ -0,0 +1,74 @@
using BizHawk.Common;
namespace BizHawk.Emulation.Cores.Nintendo.NES
{
public class UNIF_BMC_T_262 : NES.NESBoardBase
{
private bool _mode;
private bool _locked;
private bool _verticalMirror;
private int _base;
private int _bank;
public override bool Configure(NES.EDetectionOrigin origin)
{
switch (Cart.board_type)
{
case "UNIF_BMC-T-262":
break;
default:
return false;
}
SetMirroring();
return true;
}
public override void SyncState(Serializer ser)
{
ser.Sync("mode", ref _mode);
ser.Sync("locked", ref _locked);
ser.Sync("verticalMirror", ref _verticalMirror);
ser.Sync("base", ref _base);
ser.Sync("bank", ref _bank);
base.SyncState(ser);
}
public override byte ReadPRG(int addr)
{
if (addr < 0x4000)
{
int bank = _base | _bank;
return ROM[(bank * 0x4000) + (addr & 0x3FFF)];
}
else
{
int bank = _base | (_mode ? _bank : 7);
return ROM[(bank * 0x4000) + (addr & 0x3FFF)];
}
}
public override void WritePRG(int addr, byte value)
{
if (!_locked)
{
_base = ((addr & 0x60) >> 2) | ((addr & 0x100) >> 3);
_mode = (addr & 0x80) > 0;
_verticalMirror = (((addr & 2) >> 1) ^ 1) > 0;
_locked = ((addr & 0x2000) >> 13) > 0;
}
_bank = value & 0x07;
SetMirroring();
}
private void SetMirroring()
{
SetMirrorType(_verticalMirror ? EMirrorType.Vertical : EMirrorType.Horizontal);
}
}
}