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https://github.com/dborth/fceugx.git
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77 lines
1.9 KiB
C++
77 lines
1.9 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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* Copyright (C) 2009 qeed
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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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* BMC 42-in-1
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* it seems now, mapper not reset-based,
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* tested on real hardware and it does menus switch by pressing just Select, not Reset
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* new registers behaviour proven this too
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*
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*/
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#include "mapinc.h"
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static uint8 latche[2];
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static SFORMAT StateRegs[]=
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{
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{&latche, sizeof(latche), "LATCHE"},
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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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uint8 bank = (latche[0]&0x1f)|((latche[0]&0x80)>>2)|((latche[1]&1))<<6;
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if(!(latche[0] & 0x20))
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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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setmirror((latche[0]>>6)&1);
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setchr8(0);
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}
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static DECLFW(M226Write)
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{
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latche[A & 1] = V;
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Sync();
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}
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static void M226Power(void)
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{
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latche[0] = latche[1] = 0;
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Sync();
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SetWriteHandler(0x8000,0xFFFF,M226Write);
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SetReadHandler(0x8000,0xFFFF,CartBR);
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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 Mapper226_Init(CartInfo *info)
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{
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info->Power=M226Power;
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AddExState(&StateRegs, ~0, 0, 0);
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GameStateRestore=StateRestore;
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}
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