e328100e |
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 | |