[time-nuts] parallel port PPS with FreeBSD

Chris Kuethe chris.kuethe at gmail.com
Mon Dec 22 14:57:01 UTC 2008


dumb question, but is your printing system active? maybe lpd is
camping on the printer port?

On Mon, Dec 22, 2008 at 12:02 AM, Remco dB <besten at gmail.com> wrote:
> Perhaps this question may be totally off topic or considered to be part of
> the 'newbie category' but I tried to activate PPS on the parallel port (lpt0)
> with FreeBSD.
>
> By the way, the system runs fine with serial PPS but I want to compare the
> results of 'serial PPS' and 'parallel PPS' with my system.
>
> I made a symlink /dev/pps1, pointing towards /dev/lpt0.
>
> Using 127.127.22.1 in ntp.conf I get:
>
> 22 Dec 07:36:21 ntpd[633]: refclock_atom: /dev/pps1: Device busy
>
> I googled a little and changed the specs for the parallel port in my BIOS
> from 'ECP' to 'bi-directional', but the error remains.
>
> Any ideas what might be the issue here?
>
> Regards,
>
> Remco
>
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