005eb7bdc3
- Added a few mappers to the list. Tested with roms from goodnes set and some demos - Fix IRQ for Kaiser7032/202 - Issue noticeable with SMB2/3's status status bar
67 lines
1.6 KiB
C
67 lines
1.6 KiB
C
/* FCEUmm - NES/Famicom Emulator
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*
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* Copyright (C) 2019 Libretro Team
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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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/* added 2019-5-23
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* Mapper 31 - custom mapper by infiniteneslives
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* https://wiki.nesdev.com/w/index.php/INES_Mapper_031 */
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#include "mapinc.h"
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static uint8 preg[8];
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static SFORMAT StateRegs[] =
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{
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{ preg, 8, "PREG" },
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{ 0 }
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};
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static void Sync(void) {
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setprg4(0x8000, preg[0]);
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setprg4(0x9000, preg[1]);
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setprg4(0xA000, preg[2]);
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setprg4(0xB000, preg[3]);
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setprg4(0xC000, preg[4]);
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setprg4(0xD000, preg[5]);
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setprg4(0xE000, preg[6]);
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setprg4(0xF000, preg[7]);
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setchr8(0);
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}
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static DECLFW(M31Write) {
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preg[A & 7] = V;
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Sync();
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}
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static void M31Power(void) {
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preg[7] = ~0;
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Sync();
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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SetWriteHandler(0x5000, 0x5FFF, M31Write);
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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 Mapper31_Init(CartInfo *info) {
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info->Power = M31Power;
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GameStateRestore = StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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