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https://github.com/dborth/fceugx.git
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64 lines
1.5 KiB
C++
64 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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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if (latche) {
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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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} 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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latche = V;
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Sync();
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}
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static DECLFR(ExtDev) {
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return(3);
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}
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static void Power(void) {
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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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Sync();
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}
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void Mapper188_Init(CartInfo *info) {
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info->Power = Power;
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GameStateRestore = StateRestore;
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AddExState(&latche, 1, 0, "LATC");
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}
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