mirror of
https://github.com/dborth/fceugx.git
synced 2024-11-01 15:05:05 +01:00
94 lines
2.0 KiB
C++
94 lines
2.0 KiB
C++
/* FCE Ultra - NES/Famicom Emulator
|
|
*
|
|
* Copyright notice for this file:
|
|
* Copyright (C) 2005 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*
|
|
* BMC 42-in-1 "reset switch" type
|
|
*/
|
|
|
|
#include "mapinc.h"
|
|
|
|
static uint8 regs[4];
|
|
|
|
static SFORMAT StateRegs[]=
|
|
{
|
|
{regs, 4, "REGS"},
|
|
{0}
|
|
};
|
|
|
|
static void Sync(void)
|
|
{
|
|
if(regs[0]&0x80)
|
|
{
|
|
if(regs[1]&0x80)
|
|
setprg32(0x8000,regs[1]&0x1F);
|
|
else
|
|
{
|
|
int bank=((regs[1]&0x1f)<<1)|((regs[1]>>6)&1);
|
|
setprg16(0x8000,bank);
|
|
setprg16(0xC000,bank);
|
|
}
|
|
}
|
|
else
|
|
{
|
|
int bank=((regs[1]&0x1f)<<1)|((regs[1]>>6)&1);
|
|
setprg16(0xC000,bank);
|
|
}
|
|
if(regs[0]&0x20)
|
|
setmirror(MI_H);
|
|
else
|
|
setmirror(MI_V);
|
|
setchr8((regs[2]<<2)|((regs[0]>>1)&3));
|
|
}
|
|
|
|
static DECLFW(BMC64in1nrWriteLo)
|
|
{
|
|
regs[A&3]=V;
|
|
Sync();
|
|
}
|
|
|
|
static DECLFW(BMC64in1nrWriteHi)
|
|
{
|
|
regs[3]=V;
|
|
Sync();
|
|
}
|
|
|
|
static void BMC64in1nrPower(void)
|
|
{
|
|
regs[0]=0x80;
|
|
regs[1]=0x43;
|
|
regs[2]=regs[3]=0;
|
|
Sync();
|
|
SetWriteHandler(0x5000,0x5003,BMC64in1nrWriteLo);
|
|
SetWriteHandler(0x8000,0xFFFF,BMC64in1nrWriteHi);
|
|
SetReadHandler(0x8000,0xFFFF,CartBR);
|
|
}
|
|
|
|
static void StateRestore(int version)
|
|
{
|
|
Sync();
|
|
}
|
|
|
|
void BMC64in1nr_Init(CartInfo *info)
|
|
{
|
|
info->Power=BMC64in1nrPower;
|
|
AddExState(&StateRegs, ~0, 0, 0);
|
|
GameStateRestore=StateRestore;
|
|
}
|
|
|
|
|