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Diffstat (limited to 'usr.sbin/xntpd/README.FreeBSD')
| -rw-r--r-- | usr.sbin/xntpd/README.FreeBSD | 79 |
1 files changed, 5 insertions, 74 deletions
diff --git a/usr.sbin/xntpd/README.FreeBSD b/usr.sbin/xntpd/README.FreeBSD index 4dffdc8..798a685 100644 --- a/usr.sbin/xntpd/README.FreeBSD +++ b/usr.sbin/xntpd/README.FreeBSD @@ -1,8 +1,8 @@ - $Id$ + $Id: README.FreeBSD,v 1.7 1994/04/21 21:10:20 wollman Exp $ This version of NTP was converted to the BSD-style Makefile system by -Garrett Wollman (wollman@freefall.cdrom.com); it is based on version -3.3s (late beta) from the University of Delaware. +Garrett Wollman (wollman@FreeBSD.org); it is based on version +3.4e (beta) from the University of Delaware. Besides the Makefile changes, the DES code has been completely removed in order to make this code exportable. If you have a legal copy of @@ -11,74 +11,5 @@ to the AUTHDEFS in Makefile.inc. You can change CLOCKDEFS in the same file to add other reference clocks. -This version of xntpd knows how to talk to the kernelized NTP PLL which is -present in versions of FreeBSD-current after 21 April 1994. When this code -is more widely released, I'll provide the patches to Mills. - ----------------------------------------------------- -Support for Conrad electronic's "DCF-77 Uhr, Mobil". ----------------------------------------------------- -Conrad electronic in Germany,, Phone (+49) 962230111 (?), sells a gadget -called "DCF77 Uhr, mobil", which is a DCF77 timecode receiver with a -rs-232 interface. The price is around DM130. - 9-pin interface is Order# 97 94 57 66 - 25-pin interface is Order# 97 94 81 66 - -You must define - -DDCF77 -DPPS -DFREEBSD_CONRAD -DDEBUG -when you compile xntpd. You can later remove -DDEBUG, if you feel like it. - -You must also have - options COM_BIDIR -defined in your kernel, and finally the ttyport you intend to use must -have special interrupt vector: - device sio1 at isa? port "IO_COM2" tty irq 3 vector siointrts - ^^^^^^^^^^^^ -connect the radio-clock to the tty port and link it to /dev/refclock-0: - - cd /dev - sh MAKEDEV cua1 - ln -s /dev/cua01 /dev/refclock-0 - -make a directory to gather statistics in: - mkdir /var/tmp/ntp - -Create a /etc/ntp.conf along these lines: - - # DCF77 without PPS - server 127.127.8.20 - # DCF77 with PPS - #server 127.127.8.148 prefer - - driftfile /var/tmp/ntp/ntp.drift - statsdir /var/tmp/ntp - statistics loopstats - statistics peerstats - statistics clockstats - filegen peerstats file peerstats type day enable - filegen loopstats file loopstats type day enable - filegen clockstats file clockstats type day enable - -Try to start it: - comcontrol ttyd1 bidir - tickadj -A - xntpd -d -d -d - -You should see the red LED flash on the receiver every second now. You -may have to experiment a bit with the location, and possibly adjust the -minute variable resistor inside to get a good signal. Be aware, that just -because you see the light flash, is not the same as the signal being -received by the computer. The chip doing the work in the reciver uses -less than 1 micro-ampere, so even if RTS isn't pulled low, it will happily -receive, but be unable to buffer the signal to the rs-232 levels needed. - -You can see what's going on in /var/log/messages, and query the -daemon using xntpdc and ntpq, in particular the "clockvar" command -of ntpq will tell about the clocks healt. - -I live in Slagelse, Denmark, which is ~1000 Km from Mainflingen, yet -I have +/- 2 ms precision from this cheap gadget. If you have a very -stable signal, you can use the 'pps' address instead to improve your -timing. - -Have fun... Poul-Henning Kamp <phk@login.dkuug.dk> +This port should work under either FreeBSD 1.1 or FreeBSD 2.0. For +1.1, change the `-DSYS_44BSD' in Makefile.inc to `-DSYS_386BSD'. |
