Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!ncar!gatech!emcard!dekalb!greg
From: greg@dekalb.UUCP (Greg Philmon)
Newsgroups: comp.sys.tandy
Subject: Tandy RAM upgrade
Keywords: TANDY RAM UPGRADE CHIPS
Message-ID: <485@dekalb.UUCP>
Date: 28 Apr 89 12:16:35 GMT
Organization: DeKalb College, Clarkston, Ga.
Lines: 30

A friend wants me to upgrade his Tandy 1000 (SL?) from 384 K to 640 K.  Fine.
All I need is a bank of 41256-15, right?  

Now I'm not so sure.  Knowing a little of Tandy's reputation for (non)
compatibles, I decided to give them a call.  Here's what I learned, more
or less in order:

1)  No, you can't use 256 K chips - you need 128 K chips.  Well, I had never
    heard of that, so called my chip supplier.  Yup - they exist.  So I'll
    go ahead and get them.  

2)  Called another RS Compter Center.  Nope.  You don't use 128 K chips - 
    you need two banks of 64x4 chips (4464)  Huh?  I was under the impression
    that this was used only in video cards.  Plus, two banks of these would
    be 512 K - I only need half that.

3)  <sigh> Yet another call to Tandy - this time to their (not toll-free)
    "Hot-line".  Yup - I need two banks of 4464 chips.  "That'd be eight
    chips, total."  Okay, fine.  No parity and some kinda screwed up
    RAM setup.  But I can still do it for about 1/2 of tandy's price.

Is some (any) of the above on track?  I haven't had a chance to actually
open his machine and look, but really doubt that it uses 64x4 chips for
the main memory.  

I'd appreciate any help you can give.
-- 
    ---------------------------------------------------------
    | Greg Philmon  ...gatech!dekalb!greg   CIS: 72261,1724 | 
    ---------------------------------------------------------