66 lines
1.7 KiB
C
66 lines
1.7 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) 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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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if (w && have) {
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switch (seq) {
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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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seq = -1;
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have = 0;
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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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//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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if (*(uint8*)data) {
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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((char*)bdata, (const char*)((uint8*)data + 1));
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strcpy((char*)&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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return(&BarcodeWorld);
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}
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