72 lines
1.8 KiB
C
72 lines
1.8 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 m_perm[8] = {0, 1, 0, 3, 0, 5, 6, 7};
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static void UNLSonicPW(uint32 A, uint8 V)
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{
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if(EXPREGS[0]&0x80)
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{
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uint8 bank=EXPREGS[0]&0x1F;
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if(EXPREGS[0]&0x20)
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setprg32(0x8000,bank>>2);
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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(UNLSonicWrite8000)
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{
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if(V&0x80)
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MMC3_CMDWrite(A,V);
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else
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MMC3_CMDWrite(A,m_perm[V&7]);
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}
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static DECLFW(UNLSonicWriteLo)
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{
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EXPREGS[0]=V;
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FixMMC3PRG(MMC3_cmd);
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}
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static void UNLSonicPower(void)
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{
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EXPREGS[0]=EXPREGS[1]=EXPREGS[2]=0;
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GenMMC3Power();
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SetWriteHandler(0x5000,0x5FFF,UNLSonicWriteLo);
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// SetWriteHandler(0x8000,0x8000,UNLSonicWrite8000);
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}
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void UNLSonic_Init(CartInfo *info)
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{
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GenMMC3_Init(info, 256, 256, 0, 0);
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pwrap=UNLSonicPW;
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info->Power=UNLSonicPower;
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AddExState(EXPREGS, 3, 0, "EXPR");
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}
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