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From: RMC@psuvm.psu.edu (Ron Crandall)
Newsgroups: comp.sys.ibm.ps2.hardware
Subject: Re: PS/2 Model 50 loses track of time
Message-ID: <90281.085700RMC@psuvm.psu.edu>
Date: 8 Oct 90 12:57:00 GMT
References: <01.Oct.90.132740.9@cogsci.cog.jhu.edu> <1398@msa3b.UUCP>
 <441@caslon.cs.arizona.edu>
Distribution: usa
Organization: Penn State University
Lines: 40

In article <441@caslon.cs.arizona.edu>, shack@cs.arizona.edu (David Michael
Shackelford) says:
>
>In article <1398@msa3b.UUCP> mgphl@msa3b.UUCP (Michael Phillips) writes:
>>wjb@cogsci.cog.jhu.edu (William J. Bogstad) writes:
>>
>>
>>>      I have a PS/2 Model 50 under my care which seems to lose track of
>>>time.  If it is turned off for a period of time (a couple of hours?) it
>stops
>>> [...]
>
>>In the early days of PS/2 mod 50s, we had the same type problem.  This was
>>corrected with (honest!) a device driver named DASDDRV.SYS (or DASDRV.SYS ?).
>
>That's DASDDRVR.SYS and it patches a couple of BIOS problems.  I thought
>it was meant to be a driver for the hard disk, since DASD is the name
>IBM uses for disk drives, but it doesn't seem to make any difference
>at all in hard drive access.
>
It was called that because it also fixed occasional floppy disk problems. I
think it was specifically with DISKCOPY.
>
>If you're already using this driver, then I suspect the battery.
>
There is a POST (power on self test) message for battery failure. It is
a 161. Since the battery also backs up the CMOS RAM, a bad battery would
cause other problems besides just the clock not advancing.

Interestingly, I had similar sorts of problems with the clock when I
first got my Model 60, and I have used DASDDRVR.SYS since day 1. After
about 6 months of operation, the problem went away.
>
>Dave       |   shack@cs.arizona.edu
>
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Just Because I'm Paranoid            Ron Crandall
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