mirror of
https://github.com/dborth/fceugx.git
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75 lines
2.1 KiB
C
75 lines
2.1 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) 2002 Xodnizel
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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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void FP_FASTAPASS(1) IREMIRQHook(int a)
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{
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if(IRQa)
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{
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IRQCount-=a;
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if(IRQCount<-4)
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{
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X6502_IRQBegin(FCEU_IQEXT);
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IRQa=0;
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IRQCount=0xFFFF;
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}
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}
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}
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static DECLFW(Mapper65_write)
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{
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//if(A>=0x9000 && A<=0x9006)
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// printf("$%04x:$%02x, %d\n",A,V,scanline);
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switch(A)
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{
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//default: printf("$%04x:$%02x\n",A,V);
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// break;
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case 0x8000:ROM_BANK8(0x8000,V);break;
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// case 0x9000:printf("$%04x:$%02x\n",A,V);MIRROR_SET2((V>>6)&1);break;
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case 0x9001:MIRROR_SET(V>>7);break;
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case 0x9003:IRQa=V&0x80;X6502_IRQEnd(FCEU_IQEXT);break;
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case 0x9004:IRQCount=IRQLatch;break;
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case 0x9005: IRQLatch&=0x00FF;
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IRQLatch|=V<<8;
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break;
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case 0x9006: IRQLatch&=0xFF00;IRQLatch|=V;
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break;
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case 0xB000:VROM_BANK1(0x0000,V);break;
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case 0xB001:VROM_BANK1(0x0400,V);break;
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case 0xB002:VROM_BANK1(0x0800,V);break;
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case 0xB003:VROM_BANK1(0x0C00,V);break;
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case 0xB004:VROM_BANK1(0x1000,V);break;
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case 0xB005:VROM_BANK1(0x1400,V);break;
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case 0xB006:VROM_BANK1(0x1800,V);break;
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case 0xB007:VROM_BANK1(0x1C00,V);break;
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case 0xa000:ROM_BANK8(0xA000,V);break;
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case 0xC000:ROM_BANK8(0xC000,V);break;
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}
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//MIRROR_SET2(1);
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}
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void Mapper65_init(void)
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{
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MapIRQHook=IREMIRQHook;
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SetWriteHandler(0x8000,0xffff,Mapper65_write);
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}
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