1 /* $OpenBSD: spkrio.h,v 1.1 1999/01/02 00:02:43 niklas Exp $ */
2 /* $NetBSD: spkrio.h,v 1.1 1998/04/15 20:26:19 drochner Exp $ */
3
4 /*
5 * spkr.h -- interface definitions for speaker ioctl()
6 */
7
8 #ifndef _DEV_ISA_SPKR_H_
9 #define _DEV_ISA_SPKR_H_
10
11 #define SPKRTONE _IOW('S', 1, tone_t) /* emit tone */
12 #define SPKRTUNE _IO('S', 2) /* emit tone sequence */
13
14 typedef struct {
15 int frequency; /* in hertz */
16 int duration; /* in 1/100ths of a second */
17 } tone_t;
18
19 #endif /* _DEV_ISA_SPKR_H_ */