mirror of
https://github.com/dborth/fceugx.git
synced 2024-11-01 23:15:07 +01:00
95 lines
2.1 KiB
C++
95 lines
2.1 KiB
C++
|
/* FCE Ultra - NES/Famicom Emulator
|
||
|
|
*
|
||
|
|
* Copyright notice for this file:
|
||
|
|
* Copyright (C) 2007 CaH4e3
|
||
|
|
*
|
||
|
|
* This program 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 program 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 this program; if not, write to the Free Software
|
||
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "mapinc.h"
|
||
|
|
|
||
|
|
static uint8 reg[2];
|
||
|
|
|
||
|
|
static uint8 *WRAM=NULL;
|
||
|
|
static uint32 WRAMSIZE;
|
||
|
|
|
||
|
|
static SFORMAT StateRegs[]=
|
||
|
|
{
|
||
|
|
{reg, 2, "REG"},
|
||
|
|
{0}
|
||
|
|
};
|
||
|
|
|
||
|
|
static void Sync(void)
|
||
|
|
{
|
||
|
|
setchr8(0);
|
||
|
|
setprg8r(0x10,0x6000,0);
|
||
|
|
setprg32(0x8000,reg[1]>>1);
|
||
|
|
setmirror((reg[0]&1)^1);
|
||
|
|
}
|
||
|
|
|
||
|
|
static DECLFW(M179Write)
|
||
|
|
{
|
||
|
|
if(A==0xa000) reg[0]=V;
|
||
|
|
Sync();
|
||
|
|
}
|
||
|
|
|
||
|
|
static DECLFW(M179WriteLo)
|
||
|
|
{
|
||
|
|
if(A==0x5ff1) reg[1]=V;
|
||
|
|
Sync();
|
||
|
|
}
|
||
|
|
|
||
|
|
static void M179Power(void)
|
||
|
|
{
|
||
|
|
reg[0]=reg[1]=0;
|
||
|
|
Sync();
|
||
|
|
SetWriteHandler(0x4020,0x5fff,M179WriteLo);
|
||
|
|
SetReadHandler(0x6000,0x7fff,CartBR);
|
||
|
|
SetWriteHandler(0x6000,0x7fff,CartBW);
|
||
|
|
SetReadHandler(0x8000,0xFFFF,CartBR);
|
||
|
|
SetWriteHandler(0x8000,0xFFFF,M179Write);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void M179Close(void)
|
||
|
|
{
|
||
|
|
if(WRAM)
|
||
|
|
FCEU_gfree(WRAM);
|
||
|
|
WRAM=NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
static void StateRestore(int version)
|
||
|
|
{
|
||
|
|
Sync();
|
||
|
|
}
|
||
|
|
|
||
|
|
void Mapper179_Init(CartInfo *info)
|
||
|
|
{
|
||
|
|
info->Power=M179Power;
|
||
|
|
info->Close=M179Close;
|
||
|
|
GameStateRestore=StateRestore;
|
||
|
|
|
||
|
|
WRAMSIZE=8192;
|
||
|
|
WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);
|
||
|
|
SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);
|
||
|
|
AddExState(WRAM, WRAMSIZE, 0, "WRAM");
|
||
|
|
if(info->battery)
|
||
|
|
{
|
||
|
|
info->SaveGame[0]=WRAM;
|
||
|
|
info->SaveGameLen[0]=WRAMSIZE;
|
||
|
|
}
|
||
|
|
|
||
|
|
AddExState(&StateRegs, ~0, 0, 0);
|
||
|
|
}
|