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Path: utzoo!watmath!clyde!bonnie!akgua!emory!km
From: km@emory.UUCP (Ken Mandelberg)
Newsgroups: net.micro.cbm
Subject: tuning the clock on a c64
Message-ID: <1437@emory.UUCP>
Date: Mon, 19-Nov-84 09:39:03 EST
Article-I.D.: emory.1437
Posted: Mon Nov 19 09:39:03 1984
Date-Received: Tue, 20-Nov-84 03:13:52 EST
Distribution: net
Organization: Math & Computer Science, Emory University, Atlanta
Lines: 23

I need to tune the system time on a C64 so that it
is more accurate (I use it as a device controller
which runs for many days at a time). I know how to
do this on a VIC 20. On the VIC the system initializes
a countdown timer at location 37158-9 to expire every
1/60th of a second. I just poke a slight correction  to 
the low order byte, and can tune it to about a second
a day.

Is there an equivalent location on a C64? When I peek
at the CIAs (where I expect to see the value) I don't
see an appropriate looking value.


-- 
Ken Mandelberg
Emory University
Dept of Math and CS
Atlanta, Ga 30322

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