120 lines
2.4 KiB
C++
120 lines
2.4 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) 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 <string.h>
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#include <stdlib.h>
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#include "share.h"
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typedef struct {
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uint32 mzx,mzb;
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uint32 readbit;
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} ARK;
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static ARK NESArk[2];
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static ARK FCArk;
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static void StrobeARKFC(void)
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{
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FCArk.readbit=0;
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}
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static uint8 FP_FASTAPASS(2) ReadARKFC(int w,uint8 ret)
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{
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ret&=~2;
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if(w)
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{
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if(FCArk.readbit>=8)
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ret|=2;
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else
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{
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ret|=((FCArk.mzx>>(7-FCArk.readbit))&1)<<1;
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if(!fceuindbg)
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FCArk.readbit++;
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}
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}
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else
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ret|=FCArk.mzb<<1;
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return(ret);
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}
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static uint32 FixX(uint32 x)
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{
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x=98+x*144/240;
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if(x>242) x=242;
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x=~x;
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return(x);
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}
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static void FP_FASTAPASS(2) UpdateARKFC(void *data, int arg)
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{
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uint32 *ptr=(uint32 *)data;
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FCArk.mzx=FixX(ptr[0]);
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FCArk.mzb=ptr[2]?1:0;
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}
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static INPUTCFC ARKCFC={ReadARKFC,0,StrobeARKFC,UpdateARKFC,0,0};
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INPUTCFC *FCEU_InitArkanoidFC(void)
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{
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FCArk.mzx=98;
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FCArk.mzb=0;
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return(&ARKCFC);
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}
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static uint8 FP_FASTAPASS(1) ReadARK(int w)
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{
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uint8 ret=0;
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if(NESArk[w].readbit>=8)
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ret|=1<<4;
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else
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{
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ret|=((NESArk[w].mzx>>(7-NESArk[w].readbit))&1)<<4;
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if(!fceuindbg)
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NESArk[w].readbit++;
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}
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ret|=(NESArk[w].mzb&1)<<3;
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return(ret);
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}
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static void FP_FASTAPASS(1) StrobeARK(int w)
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{
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NESArk[w].readbit=0;
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}
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static void FP_FASTAPASS(3) UpdateARK(int w, void *data, int arg)
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{
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uint32 *ptr=(uint32*)data;
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NESArk[w].mzx=FixX(ptr[0]);
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NESArk[w].mzb=ptr[2]?1:0;
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}
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static INPUTC ARKC={ReadARK, 0, StrobeARK, UpdateARK, 0, 0};
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INPUTC *FCEU_InitArkanoid(int w)
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{
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NESArk[w].mzx=98;
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NESArk[w].mzb=0;
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return(&ARKC);
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}
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