From owner-freebsd-hackers Sat Dec 20 00:22:18 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id AAA28792 for hackers-outgoing; Sat, 20 Dec 1997 00:22:18 -0800 (PST) (envelope-from owner-freebsd-hackers) Received: from critter.freebsd.dk (critter.freebsd.dk [195.8.129.26]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id AAA28786 for ; Sat, 20 Dec 1997 00:22:09 -0800 (PST) (envelope-from phk@critter.freebsd.dk) Received: from critter.freebsd.dk (localhost.cybercity.dk [127.0.0.1]) by critter.freebsd.dk (8.8.7/8.8.7) with ESMTP id JAA07500; Sat, 20 Dec 1997 09:19:36 +0100 (CET) (envelope-from phk@critter.freebsd.dk) To: Nate Williams cc: hackers@freebsd.org Subject: Re: NTP stratum 1 with GPS on FreeBSD In-reply-to: Your message of "Fri, 19 Dec 1997 16:32:49 MST." <199712192332.QAA22850@mt.sri.com> Date: Sat, 20 Dec 1997 09:19:35 +0100 Message-ID: <7498.882605975@critter.freebsd.dk> From: Poul-Henning Kamp Sender: owner-freebsd-hackers@freebsd.org X-Loop: FreeBSD.org Precedence: bulk In message <199712192332.QAA22850@mt.sri.com>, Nate Williams writes: >> If anybody is interested in getting their FreeBSD box to run as a >> stratum 1 NTP server using GPS, I have been playing with a Motorola >> "UT Oncore" evaluation kit, which so far gives excellent results. > >How does it intergate with ntpd? Did you have to write the code to have >it talk to ntpd, or was that part of the kit. I'm busy writing it. Unfortunately our kernel doesn't really do nS timing yet, only uS, so my jitter is in the < 10 uS Peak-to-Peak range still. BTW: All you need to do to interface the "UT Oncore Evaluation Kit" to a PC is some custom cabling. No level Converters or anything needed :-) -- Poul-Henning Kamp FreeBSD coreteam member phk@FreeBSD.ORG "Real hackers run -current on their laptop."