2012-12-14 18:18:20 +01:00
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/* FCE Ultra - NES/Famicom Emulator
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*
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* Copyright notice for this file:
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* Copyright (C) 2012 CaH4e3
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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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static uint8 bank, preg;
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static SFORMAT StateRegs[] =
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{
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{ &bank, 1, "BANK" },
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{ &preg, 1, "PREG" },
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{ 0 }
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};
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static void Sync(void) {
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// uint32 bbank = (bank & 0x18) >> 1;
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2016-09-18 05:43:24 +02:00
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uint32 bbank = ((bank & 0x10) >> 2) | (bank & 8); // some dumps have bbanks swapped, if swap commands,
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2012-12-14 18:18:20 +01:00
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// then all roms can be played, but with some swapped
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// games in menu. if not, some dumps are unplayable
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// make hard dump for both cart types to check
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setprg16(0x8000, bbank | (preg & 3));
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setprg16(0xC000, bbank | 3);
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setchr8(0);
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}
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static DECLFW(M232WriteBank) {
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bank = V;
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Sync();
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}
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static DECLFW(M232WritePreg) {
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preg = V;
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Sync();
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}
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static void M232Power(void) {
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bank = preg = 0;
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Sync();
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SetWriteHandler(0x8000, 0xBFFF, M232WriteBank);
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SetWriteHandler(0xC000, 0xFFFF, M232WritePreg);
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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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 Mapper232_Init(CartInfo *info) {
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info->Power = M232Power;
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AddExState(&StateRegs, ~0, 0, 0);
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GameStateRestore = StateRestore;
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}
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