In message <[EMAIL PROTECTED]>, Jan Hoevers writes:
>Poul-Henning Kamp wrote:
>> Go for the 4501, you can get much better precision if you throw
>> a GPS and possibly a good X-tal after it.
>
>Do you mean the 4501 is a better timekeeper than the 4801? Or do you 
>consider the 4801 overkill for NTP alone.

The 4501 has special hardware counters that can be (ab)used to timestamp
PPS very precisely:

        http://phk.freebsd.dk/soekris/pps/

-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
[EMAIL PROTECTED]         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
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