How do I ring a bell?
In the good'ol days I could make UNIX ring a bell (literally) by sending \a to the console TTY (an ASR33 in my case). Now there's an electronic synthesised ting or beep from an terminal emulator IF it's got a sound card and so on, and an IBM-PC had a beep routine in the BIOS. Is there any way to make a noise through the built in bell speaker found on an IBM PC compatible server box? Writing 007 to the BIOS cout routine might do it, but I've realised I haven't got a clue how to do that. I could easily knock up a bit of hardware to go on a serial port (or similar) that could be triggered to make a noise, but these things have already got the hardware built in and I'm looking to use what I've already got. Thanks, Frank. P.S. cdcontrol -f /dev/mycdrom eject is the best I've come up with so far for getting attention. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: How do I ring a bell?
On 7 okt. 2013, at 13:37, Frank Leonhardt fra...@fjl.co.uk wrote: In the good'ol days I could make UNIX ring a bell (literally) by sending \a to the console TTY (an ASR33 in my case). Now there's an electronic synthesised ting or beep from an terminal emulator IF it's got a sound card and so on, and an IBM-PC had a beep routine in the BIOS. Is there any way to make a noise through the built in bell speaker found on an IBM PC compatible server box? Writing 007 to the BIOS cout routine might do it, but I've realised I haven't got a clue how to do that. I could easily knock up a bit of hardware to go on a serial port (or similar) that could be triggered to make a noise, but these things have already got the hardware built in and I'm looking to use what I've already got. Thanks, Frank. P.S. cdcontrol -f /dev/mycdrom eject is the best I've come up with so far for getting attention. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org echo CTRL-V CTRL-G should do the trick -- Peter Boosten http://www.boosten.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: How do I ring a bell?
On Mon, 07 Oct 2013 12:37:35 +0100, Frank Leonhardt wrote:
In the good'ol days I could make UNIX ring a bell (literally) by sending
\a to the console TTY (an ASR33 in my case).
Ah, the famous ^G control character... :-)
Now there's an electronic
synthesised ting or beep from an terminal emulator IF it's got a sound
card and so on, and an IBM-PC had a beep routine in the BIOS.
The terminal beep routine will primarily address the system's
speaker (located at or connected to the mainboard). A side
effect on the sound card is possible (the Logitech SoundMan
did have that feature), but it's not really in relation.
Is there any way to make a noise through the built in bell speaker
found on an IBM PC compatible server box? Writing 007 to the BIOS cout
routine might do it, but I've realised I haven't got a clue how to do that.
Making it audible is part of the local terminal emulator,
either the TTY (text mode) driver or via xterm (or the
preferred alternative terminal emulator in X).
A simple
printf \a
from the shell prompt should be sufficient. Note that if
you're running this in X, you have to make sure the bell
is not disabled. For example, put
xset b 100 1000 15
in your ~/.xinitrc (or ~/.xsession respectively).
A more sophisticated interface is provided as soon as your
kernel has
device speaker
compiled in (or speaker.ko has been loaded). Now you can
play wonderful music through the speaker. :-)
See man 4 speaker for details.
See the following shell script as an example of what you
can do:
#!/bin/sh
read -p CW === TEXT
echo ${TEXT} | morse | awk '{
if(length($0) == 0)
printf(P4\n);
else {
gsub( dit, P32L32E, $0);
gsub( di, P32L32E, $0);
gsub( dah, P32L8E, $0);
printf(%sP16\n, $0);
}
}' | dd bs=256 of=/dev/speaker /dev/null 21
Feel free to add support for reading from stdin so you can
listen to your console messages piped into the script. :-)
Always make sure that the system actually _has_ got an
internal speaker! I assume that modern PC hardware could
have it removed along with floppy drive connector, parallel
port or power switch.
P.S. cdcontrol -f /dev/mycdrom eject is the best I've come up with so
far for getting attention.
That's a really clever idea, never heared of that. It has
the advantage of being permanent because the drive will
stay open when the sound of its motor has finished. :-)
--
Polytropon
Magdeburg, Germany
Happy FreeBSD user since 4.0
Andra moi ennepe, Mousa, ...
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Re: How do I ring a bell?
On 07/10/2013 13:06, Peter Boosten wrote: On 7 okt. 2013, at 13:37, Frank Leonhardt fra...@fjl.co.uk mailto:fra...@fjl.co.uk wrote: In the good'ol days I could make UNIX ring a bell (literally) by sending \a to the console TTY (an ASR33 in my case). Now there's an electronic synthesised ting or beep from an terminal emulator IF it's got a sound card and so on, and an IBM-PC had a beep routine in the BIOS. Is there any way to make a noise through the built in bell speaker found on an IBM PC compatible server box? Writing 007 to the BIOS cout routine might do it, but I've realised I haven't got a clue how to do that. I could easily knock up a bit of hardware to go on a serial port (or similar) that could be triggered to make a noise, but these things have already got the hardware built in and I'm looking to use what I've already got. Thanks, Frank. P.S. cdcontrol -f /dev/mycdrom eject is the best I've come up with so far for getting attention. ___ freebsd-questions@freebsd.org mailto:freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org echo CTRL-V CTRL-G should do the trick Alas, not. The console driver won't ring the BIOS bell on anything I've tried. It might on a desktop with a built-in sound card and speakers, but it won't do anything with the beep speaker. It's actually the same solution I mentioned in the first line (\a translates to 007 which is ctrl-G). Then there's the issue of writing it to the console rather than a virtual terminal, but I have a few hacks that'll achieve that part. IIRC there was once a FreeBSD kernel module to drive the PC speaker (through /dev/pcspeaker or similar), but it seems to have gone or I'm confusing it with another BSD (or Linux). No I'm not. /usr/src/sys/dev/speaker/spkr.c(!) I may be close to a solution... Regards, Frank. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: How do I ring a bell?
On Mon, 07 Oct 2013 12:37:35 +0100 Frank Leonhardt fra...@fjl.co.uk wrote: In the good'ol days I could make UNIX ring a bell (literally) by sending \a to the console TTY (an ASR33 in my case). Now there's an electronic synthesised ting or beep from an terminal emulator IF it's got a sound card and so on, and an IBM-PC had a beep routine in the BIOS. Try this: echo ^G /dev/console You'll have to type ^V^G to get a real ^G in the command line (^ means control of course). -- Steve O'Hara-Smith st...@sohara.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: How do I ring a bell?
Frank Leonhardt skrev 2013-10-07 13:37: In the good'ol days I could make UNIX ring a bell (literally) by sending \a to the console TTY (an ASR33 in my case). Now there's an electronic synthesised ting or beep from an terminal emulator IF it's got a sound card and so on, and an IBM-PC had a beep routine in the BIOS. Is there any way to make a noise through the built in bell speaker found on an IBM PC compatible server box? Writing 007 to the BIOS cout routine might do it, but I've realised I haven't got a clue how to do that. I could easily knock up a bit of hardware to go on a serial port (or similar) that could be triggered to make a noise, but these things have already got the hardware built in and I'm looking to use what I've already got. Thanks, Frank. P.S. cdcontrol -f /dev/mycdrom eject is the best I've come up with so far for getting attention. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org You also have the audio/yell port. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: How do I ring a bell?
On Mon, 07 Oct 2013 13:46:53 +0100 Frank Leonhardt wrote: Alas, not. The console driver won't ring the BIOS bell on anything I've tried. It might on a desktop with a built-in sound card and speakers, but it won't do anything with the beep speaker. Are you sure you have one? The last two cases I bought didn't. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: How do I ring a bell?
On Mon, 07 Oct 2013 13:46:53 +0100 Frank Leonhardt fra...@fjl.co.uk wrote: Then there's the issue of writing it to the console rather than a virtual terminal, but I have a few hacks that'll achieve that part. /dev/console is your friend. -- Steve O'Hara-Smith st...@sohara.org ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: How do I ring a bell?
On 07/10/2013 14:31, RW wrote: On Mon, 07 Oct 2013 13:46:53 +0100 Frank Leonhardt wrote: Alas, not. The console driver won't ring the BIOS bell on anything I've tried. It might on a desktop with a built-in sound card and speakers, but it won't do anything with the beep speaker. Are you sure you have one? The last two cases I bought didn't. They beep when you turn them on and they're ready to boot :-) /dev/speaker appears to be the answer. Thanks, Frank. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: How do I ring a bell?
On Mon, 7 Oct 2013, Frank Leonhardt wrote: On 07/10/2013 13:06, Peter Boosten wrote: echo CTRL-V CTRL-G should do the trick Or, more easily, printf \a. Alas, not. The console driver won't ring the BIOS bell on anything I've tried. It might on a desktop with a built-in sound card and speakers, but it won't do anything with the beep speaker. It's actually the same solution I mentioned in the first line (\a translates to 007 which is ctrl-G). Make sure hw.syscons.bell is set to 1. It can be changed at run time, like in /etc/sysctl.conf. Some systems have it disabled (set to 0) because the bell is amazingly loud and piercing. (Looking at you, Dell.) ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: How do I ring a bell?
On 07/10/2013 13:36, Polytropon wrote: Is there any way to make a noise through the built in bell speaker found on an IBM PC compatible server box? Writing 007 to the BIOS cout routine might do it, but I've realised I haven't got a clue how to do that. Making it audible is part of the local terminal emulator, either the TTY (text mode) driver or via xterm (or the preferred alternative terminal emulator in X). Yers, but I'm not running X. Or a character terminal come to that :-) A more sophisticated interface is provided as soon as your kernel has device speaker compiled in (or speaker.ko has been loaded). Now you can play wonderful music through the speaker. :-) See man 4 speaker for details. Thanks! This is what I was looking for. See the following shell script as an example of what you can do: snip Overkill. I have proper work to do rather than working out how to play appropriate bit silly little tunes for every eventuality. Actually spkr.c has some useful comments in it - apparently it works the same as IBM PC BASIC. Now how do I make it polyphonic... Always make sure that the system actually _has_ got an internal speaker! I assume that modern PC hardware could have it removed along with floppy drive connector, parallel port or power switch. Remains to be seen, but most still seem to have one so the BIOS ROM can make beep diagnostic codes if it can't do anything else. P.S. cdcontrol -f /dev/mycdrom eject is the best I've come up with so far for getting attention. That's a really clever idea, never heared of that. It has the advantage of being permanent because the drive will stay open when the sound of its motor has finished. :-) I use it all the time, especially when directing a tech to the appropriate server in a rack. It's the one I just popped the CD drive on. These days servers have the spring-loaded notebook drives instead of the motorised trays, which is a pity. You could keep winding the motorised ones in and out until someone spotted it. I suppose if you did it energetically enough it might catch fire and set off the smoke alarm (audible). Or leave it wound out with a tin can balanced on it; to make a noise wind it back in and hear it clatter to the floor. (Incidentally - email over-lap because earlier reply posted to me and list rather than just list) Regards, Frank. ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
Re: How do I ring a bell?
On Mon, 07 Oct 2013 21:09:44 +0100, Frank Leonhardt wrote: On 07/10/2013 13:36, Polytropon wrote: Is there any way to make a noise through the built in bell speaker found on an IBM PC compatible server box? Writing 007 to the BIOS cout routine might do it, but I've realised I haven't got a clue how to do that. Making it audible is part of the local terminal emulator, either the TTY (text mode) driver or via xterm (or the preferred alternative terminal emulator in X). Yers, but I'm not running X. Or a character terminal come to that :-) In that case, something line printf \a /dev/console should work - I've just tried it. You can do that from a shell script or maybe even via fprintf() from your own code. See the following shell script as an example of what you can do: snip Overkill. I have proper work to do rather than working out how to play appropriate bit silly little tunes for every eventuality. Actually spkr.c has some useful comments in it - apparently it works the same as IBM PC BASIC. Now how do I make it polyphonic... By adding more computers. This is the established solution to _every_ IT-related problem. :-) The code in /usr/src/sys/dev/speaker/spkr.c provides a more streamlined interface to sound generation. It's even more bare metal than what I remember from Borland Turbo-C: sound(1000); delay(2500); nosound(); It was important not to miss the 3rd line or the fun would never end. :-) Always make sure that the system actually _has_ got an internal speaker! I assume that modern PC hardware could have it removed along with floppy drive connector, parallel port or power switch. Remains to be seen, but most still seem to have one so the BIOS ROM can make beep diagnostic codes if it can't do anything else. This proves that it is present, even if it's not an attached speaker anymore. Many mainboards contain a little piezo speaker directly mounted (my ultracheap home PC does, for example). P.S. cdcontrol -f /dev/mycdrom eject is the best I've come up with so far for getting attention. That's a really clever idea, never heared of that. It has the advantage of being permanent because the drive will stay open when the sound of its motor has finished. :-) I use it all the time, especially when directing a tech to the appropriate server in a rack. It's the one I just popped the CD drive on. These days servers have the spring-loaded notebook drives instead of the motorised trays, which is a pity. You could keep winding the motorised ones in and out until someone spotted it. This seems to be better than those slot-in drives I had in one server: no moving parts to the outside. I suppose if you did it energetically enough it might catch fire and set off the smoke alarm (audible). This procedure has been part of an independent quality test of CD recorders, performed by a PC maganzine many years ago. Interesting result: the cheapest drive would last longer than the most expensive one in which the gears automatically had disassembled. :-) Or leave it wound out with a tin can balanced on it; to make a noise wind it back in and hear it clatter to the floor. Interesting use for the 4X cup holder. :-) -- Polytropon Magdeburg, Germany Happy FreeBSD user since 4.0 Andra moi ennepe, Mousa, ... ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to freebsd-questions-unsubscr...@freebsd.org
