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From: nather@utastro.UUCP (Ed Nather)
Newsgroups: net.micro.pc
Subject: Re: Memory boards (with clock/calendar)
Message-ID: <359@utastro.UUCP>
Date: Mon, 15-Jul-85 11:48:23 EDT
Article-I.D.: utastro.359
Posted: Mon Jul 15 11:48:23 1985
Date-Received: Wed, 17-Jul-85 21:03:03 EDT
References: <728@ptsfa.UUCP> <484@qantel.UUCP>
Distribution: net
Organization: U. Texas, Astronomy, Austin, TX
Lines: 23

> I'm looking for a clock/memory board, too.

We are the proud (?) owners of three IBM PC portables -- the heavy computer
with three (3) long slots, total -- and found an interesting solution to the
clock/memory problem that involved no slots at all, long *or* short.  Since
the portables use the XT motherboard, we were able to replace two rows of
64K chips with 256K chips on the motherboard, thus getting 640K.  We also
added a "dClock" card that contains the standard battery-powered clock/
calendar, but sits on the motherboard by plugging into the 8088 socket.
(It has a socket for the displaced 8088 directly above).

The memory modification involves adding one small jumper to the board, and
was described in this newgroup about a month ago.  The "dClock" is sold by
Microsync, Inc., P.O. Box 116302, Carrollton, TX 75011, for $60.  The 256K
chips cost  us $90 per portable, and they're less now.

More details on request.

-- 
Ed Nather
Astronomy Dept, U of Texas @ Austin
{allegra,ihnp4}!{noao,ut-sally}!utastro!nather
nather%utastro.UTEXAS@ut-sally.ARPA