mirror of
https://github.com/dborth/fceugx.git
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90 lines
2.1 KiB
C++
90 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) 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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extern uint8 m114_perm[8];
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static void H2288PW(uint32 A, uint8 V)
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{
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if(EXPREGS[0]&0x40)
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{
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uint8 bank=(EXPREGS[0]&5)|((EXPREGS[0]&8)>>2)|((EXPREGS[0]&0x20)>>2);
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if(EXPREGS[0]&2)
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setprg32(0x8000,bank>>1);
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else
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{
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setprg16(0x8000,bank);
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setprg16(0xC000,bank);
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}
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}
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else
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setprg8(A,V&0x3F);
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}
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static DECLFW(H2288WriteHi)
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{
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switch (A&0x8001)
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{
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case 0x8000: MMC3_CMDWrite(0x8000,(V&0xC0)|(m114_perm[V&7])); break;
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case 0x8001: MMC3_CMDWrite(0x8001,V); break;
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}
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}
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static DECLFW(H2288WriteLo)
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{
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if(A&0x800)
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{
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if(A&1)
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EXPREGS[1]=V;
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else
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EXPREGS[0]=V;
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FixMMC3PRG(MMC3_cmd);
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}
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}
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static DECLFR(H2288Read)
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{
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int bit;
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bit=(A&1)^1;
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bit&=((A>>8)&1);
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bit^=1;
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return((X.DB&0xFE)|bit);
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}
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static void H2288Power(void)
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{
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EXPREGS[0]=EXPREGS[1]=0;
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GenMMC3Power();
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SetReadHandler(0x5000,0x5FFF,H2288Read);
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SetReadHandler(0x8000,0xFFFF,CartBR);
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SetWriteHandler(0x5000,0x5FFF,H2288WriteLo);
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SetWriteHandler(0x8000,0x8FFF,H2288WriteHi);
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}
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void UNLH2288_Init(CartInfo *info)
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{
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GenMMC3_Init(info, 256, 256, 0, 0);
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pwrap=H2288PW;
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info->Power=H2288Power;
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AddExState(EXPREGS, 2, 0, "EXPR");
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}
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