| 1 | /* FCE Ultra - NES/Famicom Emulator |
| 2 | * |
| 3 | * Copyright notice for this file: |
| 4 | * Copyright (C) 2003 Xodnizel |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU General Public License as published by |
| 8 | * the Free Software Foundation; either version 2 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * This program is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU General Public License |
| 17 | * along with this program; if not, write to the Free Software |
| 18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 19 | */ |
| 20 | |
| 21 | #include <string.h> |
| 22 | #include "share.h" |
| 23 | |
| 24 | static int seq,ptr,bit,cnt,have; |
| 25 | static uint8 bdata[20]; |
| 26 | |
| 27 | |
| 28 | static uint8 FP_FASTAPASS(2) Read(int w, uint8 ret) |
| 29 | { |
| 30 | if(w && have) |
| 31 | { |
| 32 | switch(seq) |
| 33 | { |
| 34 | case 0: seq++; ptr=0; ret|=0x4; break; |
| 35 | case 1: seq++; bit=bdata[ptr]; cnt=0; ret|=0x4; break; |
| 36 | case 2: ret|=((bit&0x01)^0x01)<<2; bit>>=1; if(++cnt > 7) seq++; |
| 37 | break; |
| 38 | case 3: if(++ptr > 19) |
| 39 | { |
| 40 | seq=-1; |
| 41 | have=0; |
| 42 | } |
| 43 | else |
| 44 | seq=1; |
| 45 | default: break; |
| 46 | } |
| 47 | } |
| 48 | return(ret); |
| 49 | } |
| 50 | |
| 51 | static void FP_FASTAPASS(1) Write(uint8 V) |
| 52 | { |
| 53 | //printf("%02x\n",V); |
| 54 | } |
| 55 | |
| 56 | static void FP_FASTAPASS(2) Update(void *data, int arg) |
| 57 | { |
| 58 | if(*(uint8 *)data) |
| 59 | { |
| 60 | *(uint8 *)data=0; |
| 61 | seq=ptr=0; |
| 62 | have=1; |
| 63 | strcpy((char *)bdata,(char *)data+1); |
| 64 | strcpy((char *)&bdata[13],"SUNSOFT"); |
| 65 | } |
| 66 | } |
| 67 | |
| 68 | static INPUTCFC BarcodeWorld={Read,Write,0,Update,0,0}; |
| 69 | |
| 70 | INPUTCFC *FCEU_InitBarcodeWorld(void) |
| 71 | { |
| 72 | return(&BarcodeWorld); |
| 73 | } |
| 74 | |