I have an older PC running BSDI 3.01 which has an internal ISA based
GPS TrueTime clock:
# uname -a
BSD/OS tickhaus.utoronto.ca 3.1 BSDI BSD/OS 3.1 Kernel #2: Sun Aug 8
19:31:21 CDT 1999 etc.
# dmesg | grep -i true
gpspc0 at isa0 iobase 0x320: TrueTime Model 560-5500 GPS-PC Card
I am running xntpd version 3-5 and there seems to be a problem syncing
to the
reference clock. The daemon can sync to other time servers.
# xntpdc -c peers
remote local st poll reach delay offset disp
=======================================================================
=128.100.aaa.bbb 128.100.ccc.ddd 1 64 1 0.00879 0.103917 15.8750
=GPS_PC(0) 5.0.0.0 0 64 0 0.00000 0.000000 16.0000
Here is what ntp.conf looks like:
# cat /etc/ntp.conf
server 128.100.aaa.bbb
server 127.127.27.0
driftfile /etc/ntp.drift
restrict default ignore
restrict 127.0.0.1
restrict 127.127.27.0
restrict 128.100.aaa.bbb
The GPS part seems fine:
# gpstest
*** GPSPCSTATUS ***
Hardware register = 0xFFFC
Antenna OK
Error register = 0x00
Configuration register = 0x1107
Sync-Gen Mode
Sync to GPS
Local Offset is: 00:00
DST start day is: 00-00
DST stop day is: 00-00
Sync-gen Offset (prop delay) is: 0 microsecs
Output code is: IRIG-B
Rate output is: 1 pps
*** GPSPCREADTIME ***
2028:129:15:59:20.370261 Locked to GPS
*** GPSPCSIGLEVEL ***
SAT03 = 11.45
SAT23 = 9.83
SAT16 = 11.93
SAT06 = 9.00
SAT19 = 4.68
SAT13 = 7.46
*** GPSPCPOSITION ***
Latitude: xx degrees 9 minutes 40.0 seconds N
Longitude: yy degrees 23 minutes 53.7 seconds W
Altitude: +00zz.1 meters
Here is some debugging output:
# xntpdc -c "clkbug 127.127.27.0"
clock address: 127.127.27.0
values: 8
0 129 16 10
47 0 3408134400 0
times: 3
0.000000 00:000:00:00:00.0003431088647.018523
08:265:16:10:47.018
0.000000
# xntpdc -c "clockstats 127.127.27.0"
***Command `clockstats' unknown
bash# xntpdc -c "clockstat 127.127.27.0"
clock address: 127.127.27.0
clock type: TrueTime GPS-PC Interface (27)
last event: 6
current status: 6
number of polls: 3
no response to poll: 0
bad format responses: 0
bad data responses: 3
running time: 176
fudge time 1: 0.000000
fudge time 2: 0.000000
stratum: 0
reference ID: GPS
fudge flags: 0x0
Any ideas?
---
Russell P. Sutherland Email: russ @ madhaus.cns.utoronto.ca
4 Bancroft Ave., Rm. 102 Voice: +1.416.978.0470
University of Toronto Fax: +1.416.978.6620
Toronto, ON M5S 1C1 WWW: http://madhaus.cns.utoronto.ca/~russ
CANADA
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