mirror of
https://github.com/dborth/fceugx.git
synced 2024-12-25 08:01:54 +01:00
81 lines
1.6 KiB
C
81 lines
1.6 KiB
C
/* FCE Ultra - NES/Famicom Emulator
|
|
*
|
|
* Copyright notice for this file:
|
|
* Copyright (C) 2002 Xodnizel
|
|
*
|
|
* 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 DReg;
|
|
static SFORMAT StateRegs[]=
|
|
{
|
|
{&DReg, 1, "DREG"},
|
|
{0}
|
|
};
|
|
|
|
static void Sync(void)
|
|
{
|
|
//if(!DReg)
|
|
//printf("%02x\n",DReg);
|
|
if(DReg)
|
|
{
|
|
if(DReg & 0x10)
|
|
setprg16(0x8000, (DReg & 0x7));
|
|
else
|
|
setprg16(0x8000, (DReg&0x7) | 0x8);
|
|
}
|
|
else
|
|
setprg16(0x8000, 0x7);
|
|
}
|
|
|
|
static void StateRestore(int version)
|
|
{
|
|
Sync();
|
|
}
|
|
|
|
static DECLFW(M188Write)
|
|
{
|
|
DReg = V;
|
|
Sync();
|
|
}
|
|
|
|
static DECLFR(testr)
|
|
{
|
|
return(3);
|
|
}
|
|
|
|
|
|
static void Power(void)
|
|
{
|
|
setchr8(0);
|
|
setprg8(0xc000,0xE);
|
|
setprg8(0xe000,0xF);
|
|
DReg = 0;
|
|
Sync();
|
|
SetReadHandler(0x6000,0x7FFF,testr);
|
|
SetReadHandler(0x8000,0xFFFF,CartBR);
|
|
SetWriteHandler(0x8000,0xFFFF,M188Write);
|
|
}
|
|
|
|
|
|
void Mapper188_Init(CartInfo *info)
|
|
{
|
|
info->Power=Power;
|
|
GameStateRestore=StateRestore;
|
|
AddExState(&StateRegs, ~0, 0, 0);
|
|
}
|