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From: XWUU@PURCCVM.BITNET
Newsgroups: comp.sys.cbm
Subject: DRAM for REU expansion
Message-ID: <91001.222408XWUU@PURCCVM.BITNET>
Date: 2 Jan 91 03:24:08 GMT
Organization: Purdue University
Lines: 17

I need to know what DRAM chips to buy for upgrading my 1764 REU to 512K
(or perhaps beyond).  I have read all the articles and they say use
1 X 256K DRAM's, but neglect to say which.  My local vendors do not
recognize the chips on board the REU; they are labelled KM41256-15 and are
manufactured in Korea.  How fast are they?  Should I assume that the "15"
at the end of the manufacturer's part number means 150ns?

If I choose to go beyond 512K, must I install piggy-backed 1 X 256's, or can
I put in 512K's to get 1Meg (or 1Megs to get 2Meg)?

I'm not getting help from my local dealers...if you have experience in
this matter, I would greatly appreciate the aid and advice.

Thanks!

Kirk A. Janowiak
XWUU@PURCCVM