21 lines
459 B
C
21 lines
459 B
C
/*
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* spkr.h -- interface definitions for speaker ioctl()
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*
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* $Id: spkr.h,v 1.2 1994/01/11 13:30:40 mycroft Exp $
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*/
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#ifndef _I386_SPKR_H_
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#define _I386_SPKR_H_
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#include <sys/ioctl.h>
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#define SPKRTONE _IOW('S', 1, tone_t) /* emit tone */
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#define SPKRTUNE _IO('S', 2) /* emit tone sequence */
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typedef struct {
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int frequency; /* in hertz */
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int duration; /* in 1/100ths of a second */
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} tone_t;
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#endif /* _I386_SPKR_H_ */
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