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NES - implement mappers 74 and 194. Added gamedb entries for the games I could find that correspond to these mappers

This commit is contained in:
adelikat 2012-07-29 18:35:24 +00:00
parent 71865576a7
commit d4ac95bd30
4 changed files with 75 additions and 20 deletions
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1
BizHawk.Emulation/BizHawk.Emulation.csproj
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@ -195,6 +195,7 @@
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper189.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper191.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper192.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper194.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper205.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\Mapper245.cs" />
<Compile Include="Consoles\Nintendo\NES\Boards\MMC3_family\MMC3.cs" />

20
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper074.cs
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@ -9,8 +9,6 @@ namespace BizHawk.Emulation.Consoles.Nintendo
{
//http://wiki.nesdev.com/w/index.php/INES_Mapper_074
//TODO: fix CHR-RAM behavior
public override bool Configure(NES.EDetectionOrigin origin)
{
//analyze board type
@ -52,23 +50,7 @@ namespace BizHawk.Emulation.Consoles.Nintendo
int bank = GetBankNum(addr);
if (bank == 0x08)
{
byte value = VRAM[addr & 0x03FF];
//adelikat: value ==255 is a hack to prevent a regression.
//Without any chr-ram mapping this game works fine other than the missing chinese characters. This current mapping does not fix that issue.
//In addition, the blue caret on the title screen is missing without this hack, so I put it in to prevent a regression.
//Note: FCEUX and Nintendulator are missing this blue caret (and chinese characters) suggesting a possible logical flaw in the mapper documentation.
//Nestopia achieves the correct behavior but I was unable to determine how its logic was any different.
if (value == 255)
{
return VROM[(addr & 0x03FF) + 0x2000];
}
else
{
return value;
}
return VRAM[addr & 0x03FF];
}
else if (bank == 0x09)
{

69
BizHawk.Emulation/Consoles/Nintendo/NES/Boards/MMC3_family/Mapper194.cs Normal file
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@ -0,0 +1,69 @@
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
namespace BizHawk.Emulation.Consoles.Nintendo
{
class Mapper194 : MMC3Board_Base
{
//http://wiki.nesdev.com/w/index.php/INES_Mapper_194
public override bool Configure(NES.EDetectionOrigin origin)
{
//analyze board type
switch (Cart.board_type)
{
case "MAPPER194":
break;
default:
return false;
}
BaseSetup();
return true;
}
public override void WritePPU(int addr, byte value)
{
if (addr < 0x2000)
{
VRAM[addr & 0x7FF] = value;
}
else
{
base.WritePPU(addr, value);
}
}
private int GetBankNum(int addr)
{
int bank_1k = Get_CHRBank_1K(addr);
bank_1k &= chr_mask;
return bank_1k;
}
public override byte ReadPPU(int addr)
{
if (addr < 0x2000)
{
int bank = GetBankNum(addr);
if (bank == 0x00)
{
return VRAM[addr & 0x03FF];
}
else if (bank == 0x01)
{
return VRAM[(addr & 0x03FF) + 0x400];
}
else
{
addr = MapCHR(addr);
return VROM[addr + extra_vrom];
}
}
else return base.ReadPPU(addr);
}
}
}

5
BizHawk.MultiClient/output/gamedb.txt
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@ -134,8 +134,11 @@ sha1:B6D1C372A38D196112AA98905C709AD844BD6627 Super 35-in-1 (6-in-1 VT5201) NES
sha1:BFA31777E077E64AF0E274B5A22B57C6765D36E1 Fan Kong Jing Ying (Unl) (Ch) NES board=MAPPER241;MIR=H
sha1:17473C223453D2D80FCB9DCFA317947287DC5C52 Xing He Zhan Shi (Ch) NES board=MAPPER176
sha1:0B58E16B7FD5ABE62B1D9B1841875582DF5A9195 Ying Lie Qun Xia Zhuan (Ch) NES board=MAPPER192
sha1:27CB8AEAF0EA97A6C69D3D90BC056C5EB61695F6 Dai-2-Ji - Super Robot Taisen (Ch) NES board=MAPPER074;VRAM=2
sha1:27CB8AEAF0EA97A6C69D3D90BC056C5EB61695F6 Dai-2-Ji - Super Robot Taisen (Ch) NES board=MAPPER194;VRAM=2
sha1:0B58E16B7FD5ABE62B1D9B1841875582DF5A9195 Ying Lie Qun Xia Zhuan (Ch) NES board=MAPPER192;VRAM=4
sha1:F5FA7807F2B70ADFE5707D9BF88F90DAC1436DB0 Di 4 Ci - Ji Qi Ren Dai Zhan (Ch) NES board=MAPPER074;VRAM=2
sha1:A9887C308C5D0659C3AA45D003A603C9DFFB148A B Ji Jia Zhan Shi (Asia) NES board=MAPPER074;VRAM=2
sha1:5084F25F14A61AB2799BD85D363B57B9B494601D Ji Jia Zhan Shi (Asia) NES board=MAPPER074;VRAM=2
;;;;;;;;;;;;;;;;;;;-----------------------------------------------------------------------
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