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