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nes: fix bug with loading UNIF files with no chr rom. 

nes: support mapper "FS304" (UNIF only)
This commit is contained in:
goyuken 2014-02-26 03:09:54 +00:00
parent f6c1c7eba2
commit fa9f1c69b8
3 changed files with 65 additions and 0 deletions
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1
BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
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@ -242,6 +242,7 @@
<Compile Include="Consoles\Nintendo\NES\Boards\BANDAI_74_161_161_32.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\BxROM.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Camerica.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\FS304.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\Mapper028.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\CNROM.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\CPROM.cs">

60
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/FS304.cs Normal file
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@ -0,0 +1,60 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace BizHawk.Emulation.Cores.Nintendo.NES
{
public class FS304 : NES.NESBoardBase
{
// waixing?
int prg;
int prg_mask_32k;
public override bool Configure(NES.EDetectionOrigin origin)
{
switch (Cart.board_type)
{
case "UNIF_UNL-FS304":
AssertChr(0);
AssertPrg(512, 1024, 2048, 4096);
Cart.vram_size = 8;
Cart.wram_size = 8;
Cart.wram_battery = true;
break;
default:
return false;
}
prg_mask_32k = Cart.prg_size / 32 - 1;
SetMirrorType(Cart.pad_h, Cart.pad_v);
return true;
}
public override void WriteEXP(int addr, byte value)
{
switch (addr & 0x1300)
{
case 0x1000:
prg &= ~0x0e;
prg |= value & 0x0e;
break;
case 0x1100:
prg &= ~0x01;
prg |= value >> 1 & 0x01;
break;
case 0x1200:
prg &= ~0xf0;
prg |= value << 4 & 0xf0;
break;
}
prg &= prg_mask_32k;
}
public override byte ReadPRG(int addr)
{
return ROM[addr | prg << 15];
}
}
}

4
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Unif.cs
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@ -98,6 +98,10 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
byte[] all = ms.ToArray();
ci.sha1 = "sha1:" + Util.Hash_SHA1(all, 0, all.Length);
}
// other code will expect this
if (chrrom.Length == 0)
chrrom = null;
}
public NES.CartInfo GetCartInfo() { return ci; }