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From: ane@hal.UUCP
Newsgroups: comp.unix.wizards,comp.sys.dec
Subject: Resetting the Clock
Message-ID: <132@hal.UUCP>
Date: Thu, 18-Jun-87 18:46:42 EDT
Article-I.D.: hal.132
Posted: Thu Jun 18 18:46:42 1987
Date-Received: Sat, 20-Jun-87 07:04:19 EDT
Reply-To: ane@hal.UUCP (Aydin "Bif" Edguer)
Followup-To: comp.sys.dec
Distribution: world
Organization: Biometry Computing Facility
Lines: 18
Keywords: vax clock set
Xref: utgpu comp.unix.wizards:2529 comp.sys.dec:193

Background:
According to my VAX Hardware Handbook, the VAX-11/750 has two clocks,
a programmable realtime clock and a time-of-year clock.  The realtime
clock is based on a crystal oscillator with an accuracy of 0.01% and a
resolution of 1 microsecond.  This is the clock that UNIX 4.3 BSD uses
to keep track of time.  The time-of-year clock provides the correct
time to the system in the event of a power failure or other system
crash.

Here is the question:
How can I get the computer to reset the realtime clock using the 
time-of-year clock without taking down the system?

Aydin Edguer

WORK PHONE: 216-368-3970
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