PC speaker off

GENERAL Help
1

I hate how this annoying small PC speaker beeps each time I press a ‘wrong’ button on the QNX command prompt. No matter I’m currently running QNX-6.5.0 from VMware, it still uses the old PC speaker.

Is there a way to completely disable the system bell under QNX?

2

printf “%c[=1;1;B” 0x1b >/dev/con1

3

Thanks! I enjoy the silence…

4

Mario, could please explain that line? I’ve never seen anything quite like it.

Thanks,
James Ingraham
Sage Automation, Inc.

5

If you check the helpviewer PtTerminal, under the section CSI control sequences:

{CSI=[f[;d]]B} set frequency (HZ) and duration (ms) for bell, default =100Hz,250ms

6

I experimented with this and found that results may vary with your hardware.

System 1) Super Server - any parameters turns the sound off completely and it can’t be reversed.
System 2) Advantec board - 1;1 gives a low grunting sound, there’s a lower limit on duration, frequency works really well, even past 10,000.