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From: lotto@talcott.UUCP (Jerry Lotto)
Newsgroups: net.micro.pc
Subject: Re: Enhanced Graphics Adaptor memory expansion
Message-ID: <498@talcott.UUCP>
Date: Tue, 27-Aug-85 08:53:17 EDT
Article-I.D.: talcott.498
Posted: Tue Aug 27 08:53:17 1985
Date-Received: Thu, 29-Aug-85 21:03:16 EDT
References: <542@bbncc5.UUCP>
Distribution: net
Organization: Harvard Univ. Chem. Dept.
Lines: 23
Summary: EGA Needs 4x16K chips, part # and prices enclosed

In article <542@bbncc5.UUCP>, sdyer@bbncc5.UUCP (Steve Dyer) writes:
> Is is necessary to shell out the extra money to purchase IBM's 128K memory
> upgrade for their EGA expansion card,or can ordinary 64K chips be used?  Like
> most microcomputer users, I have spare 64K chips up to my ears, and I don't
> relish the wait or the price of IBM's upgrade.

	The EGA uses 4x16K chips (4416's) NOT 1x64K chips
(4164's). The speed should be around 150 ns (although 200's would
probably work fine).  I bought mine from Marshall Industries in
Boston. They were TMS4416-15NL (Texas Instruments) and are in
such small demand that discounts are hard to find.  Usually at
~$7.20 quantity one, Marshall purchased in larger quantities and
offered the price break to people ordering the smaller amounts.
Final price was $6.48 ea. quantity 4. If you want to expand
beyond 128K, you need the piggyback board from IBM, or you have
to build one yourself.
-- 

Gerald Lotto - Harvard Chemistry Dept.

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