]> git.sur5r.net Git - cc65/blob - include/_sid.h
Removed extern keyword from function prototype.
[cc65] / include / _sid.h
1 /*****************************************************************************/
2 /*                                                                           */
3 /*                                  _sid.h                                   */
4 /*                                                                           */
5 /*                Internal include file, do not use directly                 */
6 /*                                                                           */
7 /*                                                                           */
8 /*                                                                           */
9 /* (C) 1998-2000 Ullrich von Bassewitz                                       */
10 /*               Wacholderweg 14                                             */
11 /*               D-70597 Stuttgart                                           */
12 /* EMail:        uz@musoftware.de                                            */
13 /*                                                                           */
14 /*                                                                           */
15 /* This software is provided 'as-is', without any expressed or implied       */
16 /* warranty.  In no event will the authors be held liable for any damages    */
17 /* arising from the use of this software.                                    */
18 /*                                                                           */
19 /* Permission is granted to anyone to use this software for any purpose,     */
20 /* including commercial applications, and to alter it and redistribute it    */
21 /* freely, subject to the following restrictions:                            */
22 /*                                                                           */
23 /* 1. The origin of this software must not be misrepresented; you must not   */
24 /*    claim that you wrote the original software. If you use this software   */
25 /*    in a product, an acknowledgment in the product documentation would be  */
26 /*    appreciated but is not required.                                       */
27 /* 2. Altered source versions must be plainly marked as such, and must not   */
28 /*    be misrepresented as being the original software.                      */
29 /* 3. This notice may not be removed or altered from any source              */
30 /*    distribution.                                                          */
31 /*                                                                           */
32 /*****************************************************************************/
33
34
35
36 #ifndef __SID_H
37 #define __SID_H
38
39
40
41 /* Define a structure with the sid register offsets */
42 struct __sid_voice {
43     unsigned            freq;           /* Frequency */
44     unsigned            pw;             /* Pulse width */
45     unsigned char       ctrl;           /* Control register */
46     unsigned char       ad;             /* Attack/decay */
47     unsigned char       sr;             /* Sustain/release */
48 };
49 struct __sid {
50     struct __sid_voice  v1;             /* Voice 1 */
51     struct __sid_voice  v2;             /* Voice 2 */
52     struct __sid_voice  v3;             /* Voice 3 */
53     unsigned            flt_freq;       /* Filter frequency */
54     unsigned char       flt_ctrl;       /* Filter control register */
55     unsigned char       amp;            /* Amplitude */
56     unsigned char       ad1;            /* A/D converter 1 */
57     unsigned char       ad2;            /* A/D converter 2 */
58     unsigned char       noise;          /* Noise generator */
59     unsigned char       read3;          /* Value of voice 3 */
60 };
61
62
63
64 /* End of _sid.h */
65 #endif
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