88 lines
1.9 KiB
C++
88 lines
1.9 KiB
C++
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/* 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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static uint8 reg[8];
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static uint8 mirror, cmd, is154;
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static SFORMAT StateRegs[]=
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{
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{&cmd, 1, "CMD"},
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{&mirror, 1, "MIRR"},
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{reg, 8, "REGS"},
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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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setchr2(0x0000,reg[0]>>1);
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setchr2(0x0800,reg[1]>>1);
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setchr1(0x1000,reg[2]|0x40);
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setchr1(0x1400,reg[3]|0x40);
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setchr1(0x1800,reg[4]|0x40);
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setchr1(0x1C00,reg[5]|0x40);
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setprg8(0x8000,reg[6]);
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setprg8(0xA000,reg[7]);
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}
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static void MSync(void)
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{
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if(is154)setmirror(MI_0+(mirror&1));
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}
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static DECLFW(M88Write)
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{
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switch(A&0x8001)
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{
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case 0x8000: cmd=V&7; mirror=V>>6; MSync(); break;
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case 0x8001: reg[cmd]=V; Sync(); break;
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}
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}
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static void M88Power(void)
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{
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setprg16(0xC000,~0);
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SetReadHandler(0x8000,0xFFFF,CartBR);
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SetWriteHandler(0x8000,0xFFFF,M88Write);
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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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MSync();
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}
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void Mapper88_Init(CartInfo *info)
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{
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is154=0;
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info->Power=M88Power;
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GameStateRestore=StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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void Mapper154_Init(CartInfo *info)
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{
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is154=1;
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info->Power=M88Power;
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GameStateRestore=StateRestore;
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AddExState(&StateRegs, ~0, 0, 0);
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}
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