Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!pasteur!ucbvax!RESEARCH.ATT.COM!bill
From: bill@RESEARCH.ATT.COM
Newsgroups: comp.windows.news
Subject: Re:  Real bells in NeWS???
Message-ID: <8804061943.AA03683@brillig.umd.edu>
Date: 6 Apr 88 22:04:02 GMT
Sender: daemon@ucbvax.BERKELEY.EDU
Organization: The Internet
Lines: 27

Here's the canonical way to ring the bell on a sun.
It doesn't need any new devices created in /dev.  The idea is to
call turn_bell_on() and sometime later (probably after doing
a select() call to wait for some fraction of a second) call
turn_bell_off().

-Bill Schell
 AT&T Bell Labs, Murray Hill, NJ
 allegra!bill

#include <sys/types.h>
#include <sys/ioctl.h>
#include <sundev/kbio.h>
#include <sundev/kbd.h>

turn_on_bell() {
	int bell, bell_on = KBD_CMD_BELL;
	bell = open("/dev/kbd",1);
	ioctl(bell, KIOCCMD, &bell_on);
	close(bell);
}

turn_off_bell() {
	int bell, bell_off = KBD_CMD_NOBELL;
	bell = open("/dev/kbd",1);
	ioctl(bell, KIOCCMD, &bell_off);
	close(bell);
}