Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!pt.cs.cmu.edu!b.gp.cs.cmu.edu!Ralf.Brown@B.GP.CS.CMU.EDU
From: Ralf.Brown@B.GP.CS.CMU.EDU
Newsgroups: comp.sys.ibm.pc
Subject: Re: How to set clock time?
Message-ID: <24dadd52@ralf>
Date: 5 Aug 89 12:28:02 GMT
Sender: ralf@b.gp.cs.cmu.edu
Organization: Carnegie Mellon University School of Computer Science
Lines: 30
In-Reply-To: <199@mother.dde.uucp>

In article <199@mother.dde.uucp>, kbe@dde.uucp (Kjeld Borch Egevang) wrote:
}HJW2@PSUVM.BITNET writes:
}
}>My AT clone (DTK motherboard, DTK BIOS) has a built-in, battery operated clock
}>which is 5 minutes slower per day.  I have tried to use setup program to reset
}>the clock time but all I could do is to set the current time not the clock
}>speed.  So, every once in a while, I just set the time to keep it accurate.  I
}
}Write a program setting the hardware-clock and call it from AUTOEXEC.BAT. The
}necessary interrupt is described in the recently posted list in

An easier solution (the one I use, even though my clock is only slow by eight
seconds per day), is to grab AT-CLOCK.ARC from PD1:<MSDOS.AT> on SIMTEL20.
It contains a program that, when run from AUTOEXEC, will adjust the DOS time
based on the elapsed time since the CMOS clock was set and the specified rate
of time loss (or gain).  Works like a charm, and even adjusts for daylight
savings time if you are in the US.  Never (well, almost) set your clock again!

AT-CLOCK also includes a program that will tell you the rate at which your
clock is losing or gaining time, so that you can fine-tune the adjustment.

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Alan Demers: Here is the promised Fast Fourier Transform example.  It worked
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