c62d2810 |
1 | /* FCE Ultra - NES/Famicom Emulator |
2 | * |
3 | * Copyright notice for this file: |
4 | * Copyright (C) 2002 Ben Parnell |
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 <stdlib.h> |
23 | #include "share.h" |
24 | |
25 | |
26 | static uint32 pprsb[2]; |
27 | static uint32 pprdata[2]; |
28 | |
29 | static uint8 FP_FASTAPASS(1) ReadPP(int w) |
30 | { |
31 | uint8 ret=0; |
32 | ret|=((pprdata[w]>>pprsb[w])&1)<<3; |
33 | ret|=((pprdata[w]>>(pprsb[w]+8))&1)<<4; |
34 | if(pprsb[w]>=4) |
35 | { |
36 | ret|=0x10; |
37 | if(pprsb[w]>=8) |
38 | ret|=0x08; |
39 | } |
40 | pprsb[w]++; |
41 | return ret; |
42 | } |
43 | |
44 | static void FP_FASTAPASS(1) StrobePP(int w) |
45 | { |
46 | pprsb[w]=0; |
47 | } |
48 | |
49 | void FP_FASTAPASS(3) UpdatePP(int w, void *data, int arg) |
50 | { |
51 | pprdata[w]=*(uint32 *)data; |
52 | } |
53 | |
54 | static INPUTC PPC={ReadPP,0,StrobePP,UpdatePP,0,0}; |
55 | |
56 | INPUTC *FCEU_InitPowerpad(int w) |
57 | { |
58 | pprsb[w]=pprdata[w]=0; |
59 | return(&PPC); |
60 | } |