113 lines
2.5 KiB
C++
113 lines
2.5 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) 2005 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "mapinc.h"
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#include "mmc3.h"
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static uint8 chrcmd[8], prg0, prg1, brck, mirr;
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static SFORMAT StateRegs[]=
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{
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{chrcmd, 8, "CHRCMD"},
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{&prg0, 1, "PRG0"},
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{&prg1, 1, "PRG1"},
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{&brck, 1, "BRK"},
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{&mirr, 1, "MIRR"},
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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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int i;
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setprg8(0x8000,prg0);
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setprg8(0xA000,prg1);
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setprg8(0xC000,~1);
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setprg8(0xE000,~0);
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for(i=0; i<8; i++)
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setchr1(i<<10,chrcmd[i]);
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setmirror(mirr^1);
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}
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static void UNLSL1632CW(uint32 A, uint8 V)
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{
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setchr1(A,V);
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}
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static DECLFW(UNLSL1632CMDWrite)
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{
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// FCEU_printf("bs %04x %02x %3d\n",A,V,scanline);
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if((A&0xA131)==0xA131)
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{
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brck=V;
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}
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if(brck&2)
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{
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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if(A<0xC000)
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MMC3_CMDWrite(A,V);
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else
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MMC3_IRQWrite(A,V);
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}
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else
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{
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if((A>=0xB000)&&(A<=0xE003))
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{
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int ind=((((A&2)|(A>>10))>>1)+2)&7;
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int sar=((A&1)<<2);
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chrcmd[ind]=(chrcmd[ind]&(0xF0>>sar))|((V&0x0F)<<sar);
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}
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else
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switch(A&0xF003)
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{
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case 0x8000: prg0=V; break;
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case 0xA000: prg1=V; break;
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case 0x9000: mirr=V&1; break;
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}
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Sync();
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}
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}
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static void StateRestore(int version)
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{
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if(brck&2)
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{
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FixMMC3PRG(MMC3_cmd);
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FixMMC3CHR(MMC3_cmd);
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}
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else
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Sync();
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}
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static void UNLSL1632Power(void)
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{
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GenMMC3Power();
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SetReadHandler(0x8000,0xFFFF,CartBR);
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SetWriteHandler(0x8000,0xFFFF,UNLSL1632CMDWrite);
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}
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void UNLSL1632_Init(CartInfo *info)
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{
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GenMMC3_Init(info, 256, 256, 0, 0);
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cwrap=UNLSL1632CW;
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info->Power=UNLSL1632Power;
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GameStateRestore=StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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