ShuriZma
/
fceux
mirror of https://github.com/TASEmulators/fceux.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

support mapper 028

This commit is contained in:
zeromus 2012-11-07 21:25:19 +00:00
parent 41b11e53c6
commit 6bd8ece364
8 changed files with 236 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

217
src/boards/28.cpp Normal file
View File

@ -0,0 +1,217 @@
/*
Copyright (C) 2012 FCEUX team
This file is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This file is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with the this software. If not, see <http://www.gnu.org/licenses/>.
*/
#include "mapinc.h"
// http://wiki.nesdev.com/w/index.php/INES_Mapper_028
//config
static int prg_mask_16k;
// state
uint8 reg;
uint8 chr;
uint8 prg;
uint8 mode;
uint8 outer;
void SyncMirror()
{
switch (mode & 3)
{
case 0: setmirror(MI_0); break;
case 1: setmirror(MI_1); break;
case 2: setmirror(MI_V); break;
case 3: setmirror(MI_H); break;
}
}
void Mirror(uint8 value)
{
if ((mode & 2) == 0)
{
mode &= 0xfe;
mode |= value >> 4 & 1;
}
SyncMirror();
}
static void Sync()
{
int prglo;
int prghi;
int outb = outer << 1;
//this can probably be rolled up, but i have no motivation to do so
//until it's been tested
switch (mode & 0x3c)
{
//32K modes
case 0x00:
case 0x04:
prglo = outb;
prghi = outb | 1;
break;
case 0x10:
case 0x14:
prglo = outb & ~2 | prg << 1 & 2;
prghi = outb & ~2 | prg << 1 & 2 | 1;
break;
case 0x20:
case 0x24:
prglo = outb & ~6 | prg << 1 & 6;
prghi = outb & ~6 | prg << 1 & 6 | 1;
break;
case 0x30:
case 0x34:
prglo = outb & ~14 | prg << 1 & 14;
prghi = outb & ~14 | prg << 1 & 14 | 1;
break;
//bottom fixed modes
case 0x08:
prglo = outb;
prghi = outb | prg & 1;
break;
case 0x18:
prglo = outb;
prghi = outb & ~2 | prg & 3;
break;
case 0x28:
prglo = outb;
prghi = outb & ~6 | prg & 7;
break;
case 0x38:
prglo = outb;
prghi = outb & ~14 | prg & 15;
break;
//top fixed modes
case 0x0c:
prglo = outb | prg & 1;
prghi = outb | 1;
break;
case 0x1c:
prglo = outb & ~2 | prg & 3;
prghi = outb | 1;
break;
case 0x2c:
prglo = outb & ~6 | prg & 7;
prghi = outb | 1;
break;
case 0x3c:
prglo = outb & ~14 | prg & 15;
prghi = outb | 1;
break;
}
prglo &= prg_mask_16k;
prghi &= prg_mask_16k;
setprg16(0x8000, prglo);
setprg16(0xC000, prghi);
setchr8(chr);
}
static DECLFW(WriteEXP)
{
uint32 addr = A;
uint8 value = V;
if (addr >= 05000)
reg = value & 0x81;
}
static DECLFW(WritePRG)
{
uint32 addr = A;
uint8 value = V;
switch (reg)
{
case 0x00:
chr = value & 3;
Mirror(value);
break;
case 0x01:
prg = value & 15;
Mirror(value);
Sync();
break;
case 0x80:
mode = value & 63;
SyncMirror();
Sync();
break;
case 0x81:
outer = value & 63;
Sync();
break;
}
}
static void M28Reset(void)
{
outer = 63;
prg = 15;
Sync();
}
static void M28Power(void)
{
prg_mask_16k = PRGsize[0] - 1;
//EXP
SetWriteHandler(0x4020,0x5FFF,WriteEXP);
//PRG
SetWriteHandler(0x8000,0xFFFF,WritePRG);
SetReadHandler(0x8000,0xFFFF,CartBR);
//WRAM
SetReadHandler(0x6000,0x7FFF,CartBR);
SetWriteHandler(0x6000,0x7FFF,CartBW);
M28Reset();
}
static void M28Close(void)
{
}
static SFORMAT StateRegs[]=
{
{&reg, 1, "REG"},
{&chr, 1, "CHR"},
{&prg, 1, "PRG"},
{&mode, 1, "MODE"},
{&outer, 1, "OUTR"},
{0}
};
static void StateRestore(int version)
{
Sync();
}
void Mapper28_Init(CartInfo* info)
{
info->Power=M28Power;
info->Reset=M28Reset;
info->Close=M28Close;
GameStateRestore=StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}

1
src/boards/SConscript
View File

@ -41,6 +41,7 @@ my_list = Split("""
246.cpp
252.cpp
253.cpp
28.cpp
32.cpp
33.cpp
34.cpp

2
src/ines.cpp
View File

@ -551,7 +551,7 @@ static BMAPPINGLocal bmap[] = {
{"Konami VRC2/VRC4", 25, Mapper25_Init},
// {"", 26, Mapper26_Init},
// {"", 27, Mapper27_Init}, // Deprecated, dupe for VRC2/VRC4 mapper
// {"", 28, Mapper28_Init},
{"INL-ROM", 28, Mapper28_Init},
// {"", 29, Mapper29_Init},
// {"", 30, Mapper30_Init},
// {"", 31, Mapper31_Init},

1
src/ines.h
View File

@ -382,6 +382,7 @@ void Mapper21_Init(CartInfo *);
void Mapper22_Init(CartInfo *);
void Mapper23_Init(CartInfo *);
void Mapper25_Init(CartInfo *);
void Mapper28_Init(CartInfo *);
void Mapper32_Init(CartInfo *);
void Mapper33_Init(CartInfo *);
void Mapper34_Init(CartInfo *);

1
vc/vc10_fceux.vcxproj
View File

@ -268,6 +268,7 @@
<ClCompile Include="..\src\boards\246.cpp" />
<ClCompile Include="..\src\boards\252.cpp" />
<ClCompile Include="..\src\boards\253.cpp" />
<ClCompile Include="..\src\boards\28.cpp" />
<ClCompile Include="..\src\boards\32.cpp" />
<ClCompile Include="..\src\boards\33.cpp" />
<ClCompile Include="..\src\boards\34.cpp" />

3
vc/vc10_fceux.vcxproj.filters
View File

@ -964,6 +964,9 @@
<ClCompile Include="..\src\boards\252.cpp">
<Filter>boards</Filter>
</ClCompile>
<ClCompile Include="..\src\boards\28.cpp">
<Filter>boards</Filter>
</ClCompile>
</ItemGroup>
<ItemGroup>
<ClInclude Include="..\src\cart.h">

4
vc/vc8_fceux.vcproj
View File

@ -771,6 +771,10 @@
/>
</FileConfiguration>
</File>
<File
RelativePath="..\src\boards\28.cpp"
>
</File>
<File
RelativePath="..\src\boards\32.cpp"
>

12
vc/vc9_fceux.vcproj
View File

@ -461,10 +461,6 @@
RelativePath="..\src\boards\222.cpp"
>
</File>
<File
RelativePath="..\src\boards\vrc2and4.cpp"
>
</File>
<File
RelativePath="..\src\boards\235.cpp"
>
@ -473,6 +469,10 @@
RelativePath="..\src\boards\253.cpp"
>
</File>
<File
RelativePath="..\src\boards\28.cpp"
>
</File>
<File
RelativePath="..\src\boards\3d-block.cpp"
>
@ -709,6 +709,10 @@
RelativePath="..\src\boards\tf-1201.cpp"
>
</File>
<File
RelativePath="..\src\boards\vrc2and4.cpp"
>
</File>
</Filter>
<Filter
Name="drivers"