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nes: mapper036: "Strike Wolf (MGC-014)"

This commit is contained in:
goyuken 2012-10-29 00:09:27 +00:00
parent 164a6cb42d
commit f09f8008ca
2 changed files with 66 additions and 0 deletions
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1
BizHawk.Emulation/BizHawk.Emulation.csproj
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@ -219,6 +219,7 @@
<Compile Include="Consoles\Nintendo\NES\Boards\JALECO_SS8806.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper015.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper027.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper036.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper038.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper040.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper041.cs" />

65
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/Mapper036.cs Normal file
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@ -0,0 +1,65 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace BizHawk.Emulation.Consoles.Nintendo
{
// mapper036
// Strike Wolf (MGC-014) [!].nes
// like an oversize GxROM
// information from fceux
public class Mapper036 : NES.NESBoardBase
{
int chr;
int prg;
int chr_mask;
int prg_mask;
public override bool Configure(NES.EDetectionOrigin origin)
{
switch (Cart.board_type)
{
case "MAPPER036":
AssertVram(0); AssertWram(0);
break;
default:
return false;
}
chr_mask = Cart.chr_size / 8 - 1;
prg_mask = Cart.prg_size / 32 - 1;
SetMirrorType(Cart.pad_h, Cart.pad_v);
return true;
}
public override byte ReadPPU(int addr)
{
if (addr < 0x2000)
return VROM[addr | chr << 13];
else
return base.ReadPPU(addr);
}
public override byte ReadPRG(int addr)
{
return ROM[addr | prg << 15];
}
public override void WritePRG(int addr, byte value)
{
// either hack emulation of a weird bus conflict, or crappy pirate safeguard
if (addr >= 0x400 && addr <= 0x7ffe)
{
chr = value & 15 & chr_mask;
prg = value >> 4 & 15 & prg_mask;
}
}
public override void SyncState(Serializer ser)
{
base.SyncState(ser);
ser.Sync("chr", ref chr);
ser.Sync("prg", ref prg);
}
}
}