mirror of
https://github.com/dborth/fceugx.git
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104 lines
2.6 KiB
C++
104 lines
2.6 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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* BMC 42-in-1 reset switch
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*/
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#include "mapinc.h"
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static uint8 bank_mode;
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static uint8 bank_value;
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static uint8 prgb[4];
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static SFORMAT StateRegs[]=
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{
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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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FCEU_printf("%02x: %02x %02x\n", bank_mode, bank_value, prgb[0]);
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switch(bank_mode&7)
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{
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case 0:
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setprg32(0x8000,bank_value&7); break;
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case 1:
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setprg16(0x8000,((8+(bank_value&7))>>1)+prgb[1]);
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setprg16(0xC000,(bank_value&7)>>1);
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case 4:
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setprg32(0x8000,8+(bank_value&7)); break;
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case 5:
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setprg16(0x8000,((8+(bank_value&7))>>1)+prgb[1]);
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setprg16(0xC000,((8+(bank_value&7))>>1)+prgb[3]);
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case 2:
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setprg8(0x8000,prgb[0]>>2);
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setprg8(0xa000,prgb[1]);
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setprg8(0xc000,prgb[2]);
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setprg8(0xe000,~0);
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break;
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case 3:
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setprg8(0x8000,prgb[0]);
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setprg8(0xa000,prgb[1]);
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setprg8(0xc000,prgb[2]);
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setprg8(0xe000,prgb[3]);
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break;
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}
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}
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static DECLFW(BMC13in1JY110Write)
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{
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FCEU_printf("%04x:%04x\n",A,V);
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switch(A)
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{
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case 0x8000:
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case 0x8001:
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case 0x8002:
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case 0x8003: prgb[A&3]=V; break;
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case 0xD000: bank_mode=V; break;
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case 0xD001: setmirror(V&3);
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case 0xD002: break;
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case 0xD003: bank_value=V; break;
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}
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Sync();
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}
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static void BMC13in1JY110Power(void)
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{
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prgb[0]=prgb[1]=prgb[2]=prgb[3]=0;
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bank_mode=0;
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bank_value=0;
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setprg32(0x8000,0);
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setchr8(0);
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SetWriteHandler(0x8000,0xFFFF,BMC13in1JY110Write);
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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 BMC13in1JY110_Init(CartInfo *info)
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{
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info->Power=BMC13in1JY110Power;
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AddExState(&StateRegs, ~0, 0, 0);
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GameStateRestore=StateRestore;
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}
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