mirror of
https://github.com/dborth/fceugx.git
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79 lines
2.0 KiB
C++
79 lines
2.0 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) 2009 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 reg;
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static uint8 *CHRRAM = NULL;
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static uint32 CHRRAMSIZE;
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static SFORMAT StateRegs[] =
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{
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{ ®, 1, "REGS" },
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{ 0 }
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};
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static void Sync(void) {
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setchr4r(0x10, 0x0000, 0);
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setchr4r(0x10, 0x1000, reg & 0x0f);
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setprg16(0x8000, reg >> 6);
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setprg16(0xc000, ~0);
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}
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static DECLFW(M168Write) {
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reg = V;
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Sync();
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}
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static DECLFW(M168Dummy) {
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}
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static void M168Power(void) {
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reg = 0;
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Sync();
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SetWriteHandler(0x4020, 0x7fff, M168Dummy);
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SetWriteHandler(0xB000, 0xB000, M168Write);
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SetWriteHandler(0xF000, 0xF000, M168Dummy);
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SetWriteHandler(0xF080, 0xF080, M168Dummy);
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SetReadHandler(0x8000, 0xFFFF, CartBR);
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}
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static void M168Close(void) {
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if (CHRRAM)
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FCEU_gfree(CHRRAM);
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CHRRAM = NULL;
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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 Mapper168_Init(CartInfo *info) {
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info->Power = M168Power;
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info->Close = M168Close;
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GameStateRestore = StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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CHRRAMSIZE = 8192 * 8;
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CHRRAM = (uint8*)FCEU_gmalloc(CHRRAMSIZE);
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SetupCartCHRMapping(0x10, CHRRAM, CHRRAMSIZE, 1);
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AddExState(CHRRAM, CHRRAMSIZE, 0, "CRAM");
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}
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