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https://github.com/dborth/fceugx.git
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72 lines
1.5 KiB
C++
72 lines
1.5 KiB
C++
/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2002 Xodnizel
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "mapinc.h"
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extern uint32 ROM_size;
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static uint8 latche;
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static void Sync(void)
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{
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if(latche)
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{
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if(latche&0x10)
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setprg16(0x8000,(latche&7));
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else
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setprg16(0x8000,(latche&7)|8);
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}
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else
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setprg16(0x8000,7+(ROM_size>>4));
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}
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static DECLFW(M188Write)
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{
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latche=V;
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Sync();
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}
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static DECLFR(ExtDev)
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{
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return(3);
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}
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static void Power(void)
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{
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latche=0;
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Sync();
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setchr8(0);
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setprg16(0xc000,0x7);
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SetReadHandler(0x6000,0x7FFF,ExtDev);
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SetReadHandler(0x8000,0xFFFF,CartBR);
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SetWriteHandler(0x8000,0xFFFF,M188Write);
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}
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static void StateRestore(int version)
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{
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Sync();
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}
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void Mapper188_Init(CartInfo *info)
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{
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info->Power=Power;
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GameStateRestore=StateRestore;
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AddExState(&latche, 1, 0, "LATCH");
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}
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