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NesHawk - support mapper 170

This commit is contained in:
adelikat 2016-10-28 18:11:34 -05:00
parent dbc5f54d03
commit 48766c2b88
2 changed files with 61 additions and 0 deletions
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1
BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
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@ -625,6 +625,7 @@
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper156.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper164.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper168.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper170.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper175.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper176.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper177.cs" />

60
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/Mapper170.cs Normal file
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@ -0,0 +1,60 @@
using BizHawk.Common;
namespace BizHawk.Emulation.Cores.Nintendo.NES
{
public sealed class Mapper170 : NES.NESBoardBase
{
private byte reg;
public override bool Configure(NES.EDetectionOrigin origin)
{
switch (Cart.board_type)
{
case "MAPPER170":
break;
default:
return false;
}
return true;
}
public override void SyncState(Serializer ser)
{
ser.Sync("reg", ref reg);
base.SyncState(ser);
}
public override byte ReadPRG(int addr)
{
if (addr < 0x4000)
{
return base.ReadPRG(addr);
}
int last16kBank = ROM.Length - 0x4000;
return ROM[last16kBank + (addr & 0x3FFF)];
}
public override void WriteWRAM(int addr, byte value)
{
if (addr == 0x502 || addr == 0x1000)
{
reg = (byte)(value << 1 & 0x80);
}
base.WriteWRAM(addr, value);
}
public override byte ReadWRAM(int addr)
{
if (addr == 0x1001 || addr == 0x1777)
{
return (byte)(reg | NES.DB & 0x7F);
}
return base.ReadWRAM(addr);
}
}
}