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nes: attempt to support super mario bros 13 (nonfunctional at the moment)

This commit is contained in:
goyuken 2014-01-22 01:07:54 +00:00
parent 8998e35768
commit 2865c56179
4 changed files with 144 additions and 1 deletions
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1
BizHawk.Emulation.Cores/BizHawk.Emulation.Cores.csproj
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@ -338,6 +338,7 @@
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper250.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\MMC3.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\NES-QJ.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\RexSoftSL1632.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\TQROM.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\TLSROM.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\TVROM.cs" />

4
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/MMC3.cs
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@ -12,7 +12,9 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
{
//state
int reg_addr;
bool chr_mode, prg_mode;
public bool get_chr_mode { get { return chr_mode; } } // one of the pirate mappers needs this
bool chr_mode;
bool prg_mode;
public ByteBuffer regs = new ByteBuffer(8);
public byte mirror;

139
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/MMC3_family/RexSoftSL1632.cs Normal file
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@ -0,0 +1,139 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using BizHawk.Common;
namespace BizHawk.Emulation.Cores.Nintendo.NES
{
// p-p-p-p-pirate?
// http://svn.opennestopia.staulkor.com/Nestopia/core/board/NstBoardRexSoftSl1632.cpp
public class RexSoftSL1632 : MMC3Board_Base
{
// state
byte exmode;
int[] exprg = new int[4];
int[] exchr = new int[8];
byte exnmt;
public override bool Configure(NES.EDetectionOrigin origin)
{
switch (Cart.board_type)
{
case "UNIF_UNL-SL1632":
break;
default:
return false;
}
BaseSetup();
exprg[3] = prg_mask;
exprg[2] = prg_mask - 1;
return true;
}
public override void SyncState(BizHawk.Common.Serializer ser)
{
base.SyncState(ser);
ser.Sync("exmode", ref exmode);
ser.Sync("exprg", ref exprg, false);
ser.Sync("exchr", ref exchr, false);
ser.Sync("exnmt", ref exnmt);
}
public override byte ReadPRG(int addr)
{
if (exmode.Bit(1))
{
return base.ReadPRG(addr);
}
else
{
int b = addr >> 13;
b = exprg[b];
b &= prg_mask;
return ROM[addr & 0x1fff | b << 13];
}
}
void SinkMirror()
{
SetMirrorType(exnmt.Bit(0) ? EMirrorType.Vertical : EMirrorType.Horizontal);
}
readonly static byte[] modes = { 5, 5, 3, 1 };
public override byte ReadPPU(int addr)
{
if (addr < 0x2000)
{
int bank;
if (exmode.Bit(1))
{
bank = Get_CHRBank_1K(addr);
int tmp = mmc3.get_chr_mode ? 2 : 0;
bank |= exmode << modes[addr >> 11 ^ tmp] & 0x100;
}
else
{
bank = exchr[addr >> 10];
}
bank &= chr_mask;
return VROM[addr & 0x3ff | bank << 10];
}
else
{
return base.ReadPPU(addr);
}
}
// this is stupid as hell
public override void WritePRG(int addr, byte value)
{
Console.WriteLine("{0:x4}:{1:x2}", addr, value);
if ((addr & 0x2131) == 0x2131)
{
exmode = value;
if (!exmode.Bit(1))
{
SinkMirror();
}
}
if (exmode.Bit(1))
{
switch (addr & 0x6001)
{
case 0x0000: base.WritePRG(0x0000, value); break;
case 0x0001: base.WritePRG(0x0001, value); break;
case 0x2000: SinkMirror(); break;
case 0x2001: base.WritePRG(0x2001, value); break;
case 0x4000: base.WritePRG(0x4000, value); break;
case 0x4001: base.WritePRG(0x4001, value); break;
case 0x6000: base.WritePRG(0x6000, value); break;
case 0x6001: base.WritePRG(0x6001, value); break;
}
}
else if (addr >= 3000 && addr <= 0x6003)
{
int offset = addr << 2 & 4;
addr = ((((addr & 0x2) | addr >> 10) >> 1) + 2) & 0x7;
exchr[addr] = (exchr[addr] & 0xf0 >> offset) | ((value & 0x0f) >> offset);
// sync chr
}
else
{
switch (addr & 0x7003)
{
case 0x0000: exprg[0] = value; break;
case 0x1000: exnmt = value; SinkMirror(); break;
case 0x2000: exprg[1] = value; break;
}
}
}
}
}

1
BizHawk.Emulation.Cores/Consoles/Nintendo/NES/Boards/SxROM.cs
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@ -532,6 +532,7 @@ namespace BizHawk.Emulation.Cores.Nintendo.NES
Cart.vram_size = 8;
Cart.wram_size = 8;
Cart.wram_battery = true; // all SUROM boards had batteries
Console.WriteLine("Guessing SUROM for 512KiB PRG ROM");
break;
case "NES-SUROM": //dragon warrior 4
case "HVC-SUROM":