mirror of
https://github.com/cc65/cc65.git
synced 2024-12-27 00:29:31 +00:00
69 lines
3.3 KiB
C
69 lines
3.3 KiB
C
/*****************************************************************************/
|
|
/* */
|
|
/* _sid.h */
|
|
/* */
|
|
/* Internal include file, do not use directly */
|
|
/* */
|
|
/* */
|
|
/* */
|
|
/* (C) 1998-2000 Ullrich von Bassewitz */
|
|
/* Wacholderweg 14 */
|
|
/* D-70597 Stuttgart */
|
|
/* EMail: uz@musoftware.de */
|
|
/* */
|
|
/* */
|
|
/* This software is provided 'as-is', without any expressed or implied */
|
|
/* warranty. In no event will the authors be held liable for any damages */
|
|
/* arising from the use of this software. */
|
|
/* */
|
|
/* Permission is granted to anyone to use this software for any purpose, */
|
|
/* including commercial applications, and to alter it and redistribute it */
|
|
/* freely, subject to the following restrictions: */
|
|
/* */
|
|
/* 1. The origin of this software must not be misrepresented; you must not */
|
|
/* claim that you wrote the original software. If you use this software */
|
|
/* in a product, an acknowledgment in the product documentation would be */
|
|
/* appreciated but is not required. */
|
|
/* 2. Altered source versions must be plainly marked as such, and must not */
|
|
/* be misrepresented as being the original software. */
|
|
/* 3. This notice may not be removed or altered from any source */
|
|
/* distribution. */
|
|
/* */
|
|
/*****************************************************************************/
|
|
|
|
|
|
|
|
#ifndef __SID_H
|
|
#define __SID_H
|
|
|
|
|
|
|
|
/* Define a structure with the sid register offsets */
|
|
struct __sid_voice {
|
|
unsigned freq; /* Frequency */
|
|
unsigned pw; /* Pulse width */
|
|
unsigned char ctrl; /* Control register */
|
|
unsigned char ad; /* Attack/decay */
|
|
unsigned char sr; /* Sustain/release */
|
|
};
|
|
struct __sid {
|
|
struct __sid_voice v1; /* Voice 1 */
|
|
struct __sid_voice v2; /* Voice 2 */
|
|
struct __sid_voice v3; /* Voice 3 */
|
|
unsigned flt_freq; /* Filter frequency */
|
|
unsigned char flt_ctrl; /* Filter control register */
|
|
unsigned char amp; /* Amplitude */
|
|
unsigned char ad1; /* A/D converter 1 */
|
|
unsigned char ad2; /* A/D converter 2 */
|
|
unsigned char noise; /* Noise generator */
|
|
unsigned char read3; /* Value of voice 3 */
|
|
};
|
|
|
|
|
|
|
|
/* End of _sid.h */
|
|
#endif
|
|
|
|
|
|
|