mirror of
https://github.com/dborth/fceugx.git
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75 lines
1.7 KiB
C
75 lines
1.7 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) 2003 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 "share.h"
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static int seq,ptr,bit,cnt,have;
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static uint8 bdata[20];
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static uint8 FP_FASTAPASS(2) Read(int w, uint8 ret)
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{
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if(w && have)
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{
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switch(seq)
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{
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case 0: seq++; ptr=0; ret|=0x4; break;
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case 1: seq++; bit=bdata[ptr]; cnt=0; ret|=0x4; break;
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case 2: ret|=((bit&0x01)^0x01)<<2; bit>>=1; if(++cnt > 7) seq++;
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break;
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case 3: if(++ptr > 19)
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{
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seq=-1;
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have=0;
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}
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else
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seq=1;
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default: break;
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}
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}
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return(ret);
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}
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static void FP_FASTAPASS(1) Write(uint8 V)
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{
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//printf("%02x\n",V);
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}
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static void FP_FASTAPASS(2) Update(void *data, int arg)
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{
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if(*(uint8 *)data)
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{
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*(uint8 *)data=0;
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seq=ptr=0;
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have=1;
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strcpy(bdata,(uint8 *)data+1);
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strcpy(&bdata[13],"SUNSOFT");
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}
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}
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static INPUTCFC BarcodeWorld={Read,Write,0,Update,0,0};
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INPUTCFC *FCEU_InitBarcodeWorld(void)
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{
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return(&BarcodeWorld);
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}
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