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From: jpd@usl.UUCP (James P. Dugal)
Newsgroups: net.micro.pc
Subject: Re: memory board for a Zenith 151
Message-ID: <642@usl.UUCP>
Date: Sat, 21-Sep-85 16:17:20 EDT
Article-I.D.: usl.642
Posted: Sat Sep 21 16:17:20 1985
Date-Received: Mon, 23-Sep-85 00:23:44 EDT
References: <541@t12tst.UUCP> <21900082@uiucuxc>
Reply-To: jpd@usl.UUCP (James P. Dugal)
Organization: USL, Lafayette, LA
Lines: 17
Summary: 

I just installed an upgrade kit for $20 from Microprocessors Unlimited
of Beggs, OK (phone 918-267-4961).  The kit is really just a new PAL
memory address decoder.  They were selling NEC 256K 150 ns rams for $2.75
each.  Hence a memory upgrade has cost me $69.50 (plus shipping, etc).

The PAL permits using the original 64K rams (up to 5 banks) with J401 in
the first position, and using 256K rams (1 or 2 banks) and 64K rams (up to
3 banks) with J401 in the second position.  Thus adding 18 256K rams to
a full (320KB) memory board yields 704KB!  Not bad for under $70.00!

--James
UUCP: {akgua, ut-sally}!usl!usl-pc!jpd
CSNet: DugalJP@usl.csnet
-- 
				James Dugal
				Assoc. Dir., USL Computing Center
				{akgua, ut-sally}!usl!jpd