fceux/boards/karaoke.cpp

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/* 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"
extern uint32 ROM_size;
static uint8 latche;
static void Sync(void)
{
if(latche)
{
if(latche&0x10)
setprg16(0x8000,(latche&7));
else
setprg16(0x8000,(latche&7)|8);
}
else
setprg16(0x8000,7+(ROM_size>>4));
}
static DECLFW(M188Write)
{
latche=V;
Sync();
}
static DECLFR(ExtDev)
{
return(3);
}
static void Power(void)
{
latche=0;
Sync();
setchr8(0);
setprg16(0xc000,0x7);
SetReadHandler(0x6000,0x7FFF,ExtDev);
SetReadHandler(0x8000,0xFFFF,CartBR);
SetWriteHandler(0x8000,0xFFFF,M188Write);
}
static void StateRestore(int version)
{
Sync();
}
void Mapper188_Init(CartInfo *info)
{
info->Power=Power;
GameStateRestore=StateRestore;
AddExState(&latche, 1, 0, "LATCH");
}