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Amiga Developer CD v1.2
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adkbits.h
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C/C++ Source or Header
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1992-09-01
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2KB
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55 lines
#ifndef HARDWARE_ADKBITS_H
#define HARDWARE_ADKBITS_H
/*
** $Filename: hardware/adkbits.h $
** $Release: 2.04 Includes, V37.4 $
** $Revision: 36.2 $
** $Date: 90/07/10 $
**
** bit definitions for adkcon register
**
** (C) Copyright 1985-1991 Commodore-Amiga, Inc.
** All Rights Reserved
*/
#define ADKB_SETCLR 15 /* standard set/clear bit */
#define ADKB_PRECOMP1 14 /* two bits of precompensation */
#define ADKB_PRECOMP0 13
#define ADKB_MFMPREC 12 /* use mfm style precompensation */
#define ADKB_UARTBRK 11 /* force uart output to zero */
#define ADKB_WORDSYNC 10 /* enable DSKSYNC register matching */
#define ADKB_MSBSYNC 9 /* (Apple GCR Only) sync on MSB for reading */
#define ADKB_FAST 8 /* 1 -> 2 us/bit (mfm), 2 -> 4 us/bit (gcr) */
#define ADKB_USE3PN 7 /* use aud chan 3 to modulate period of ?? */
#define ADKB_USE2P3 6 /* use aud chan 2 to modulate period of 3 */
#define ADKB_USE1P2 5 /* use aud chan 1 to modulate period of 2 */
#define ADKB_USE0P1 4 /* use aud chan 0 to modulate period of 1 */
#define ADKB_USE3VN 3 /* use aud chan 3 to modulate volume of ?? */
#define ADKB_USE2V3 2 /* use aud chan 2 to modulate volume of 3 */
#define ADKB_USE1V2 1 /* use aud chan 1 to modulate volume of 2 */
#define ADKB_USE0V1 0 /* use aud chan 0 to modulate volume of 1 */
#define ADKF_SETCLR (1<<15)
#define ADKF_PRECOMP1 (1<<14)
#define ADKF_PRECOMP0 (1<<13)
#define ADKF_MFMPREC (1<<12)
#define ADKF_UARTBRK (1<<11)
#define ADKF_WORDSYNC (1<<10)
#define ADKF_MSBSYNC (1<<9)
#define ADKF_FAST (1<<8)
#define ADKF_USE3PN (1<<7)
#define ADKF_USE2P3 (1<<6)
#define ADKF_USE1P2 (1<<5)
#define ADKF_USE0P1 (1<<4)
#define ADKF_USE3VN (1<<3)
#define ADKF_USE2V3 (1<<2)
#define ADKF_USE1V2 (1<<1)
#define ADKF_USE0V1 (1<<0)
#define ADKF_PRE000NS 0 /* 000 ns of precomp */
#define ADKF_PRE140NS (ADKF_PRECOMP0) /* 140 ns of precomp */
#define ADKF_PRE280NS (ADKF_PRECOMP1) /* 280 ns of precomp */
#define ADKF_PRE560NS (ADKF_PRECOMP0|ADKF_PRECOMP1) /* 560 ns of precomp */
#endif /* HARDWARE_ADKBITS_H */