NetBSD/sys/arch/i386/isa/spkrreg.h
1994-10-27 04:14:23 +00:00

12 lines
347 B
C

/* $NetBSD: spkrreg.h,v 1.2 1994/10/27 04:18:16 cgd Exp $ */
/*
* PIT port addresses and speaker control values
*/
#define PITAUX_PORT 0x61 /* port of Programmable Peripheral Interface */
#define PIT_ENABLETMR2 0x01 /* Enable timer/counter 2 */
#define PIT_SPKRDATA 0x02 /* Direct to speaker */
#define PIT_SPKR (PIT_ENABLETMR2|PIT_SPKRDATA)