mirror of
https://github.com/dborth/fceugx.git
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95 lines
2.1 KiB
C++
95 lines
2.1 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) 2007 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[2];
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static uint8 *WRAM=NULL;
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static uint32 WRAMSIZE;
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static SFORMAT StateRegs[]=
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{
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{reg, 2, "REG"},
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{0}
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};
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static void Sync(void)
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{
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setchr8(0);
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setprg8r(0x10,0x6000,0);
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setprg32(0x8000,reg[1]>>1);
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setmirror((reg[0]&1)^1);
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}
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static DECLFW(M179Write)
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{
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if(A==0xa000) reg[0]=V;
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Sync();
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}
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static DECLFW(M179WriteLo)
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{
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if(A==0x5ff1) reg[1]=V;
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Sync();
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}
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static void M179Power(void)
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{
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reg[0]=reg[1]=0;
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Sync();
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SetWriteHandler(0x4020,0x5fff,M179WriteLo);
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SetReadHandler(0x6000,0x7fff,CartBR);
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SetWriteHandler(0x6000,0x7fff,CartBW);
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SetReadHandler(0x8000,0xFFFF,CartBR);
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SetWriteHandler(0x8000,0xFFFF,M179Write);
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}
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static void M179Close(void)
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{
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if(WRAM)
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FCEU_gfree(WRAM);
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WRAM=NULL;
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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 Mapper179_Init(CartInfo *info)
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{
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info->Power=M179Power;
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info->Close=M179Close;
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GameStateRestore=StateRestore;
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WRAMSIZE=8192;
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WRAM=(uint8*)FCEU_gmalloc(WRAMSIZE);
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SetupCartPRGMapping(0x10,WRAM,WRAMSIZE,1);
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AddExState(WRAM, WRAMSIZE, 0, "WRAM");
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if(info->battery)
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{
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info->SaveGame[0]=WRAM;
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info->SaveGameLen[0]=WRAMSIZE;
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}
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AddExState(&StateRegs, ~0, 0, 0);
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}
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