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From: luscher@nicmad.UUCP
Newsgroups: net.micro.atari16
Subject: Re: 1Meg Upgrade Warning
Message-ID: <562@nicmad.UUCP>
Date: Sat, 1-Mar-86 19:13:53 EST
Article-I.D.: nicmad.562
Posted: Sat Mar  1 19:13:53 1986
Date-Received: Sun, 2-Mar-86 19:52:23 EST
References: <3806@pur-ee.UUCP> <54600001@iuvax.UUCP>
Reply-To: luscher@nicmad.UUCP (Jim {4thNIC} Luscher)
Organization: Nicolet Instrument Corp. Madison WI
Lines: 17

I have updated 3 machines to 1 meg, using TI and Mitsubishi drams.
On one of the machines one of the drams didn't work (anti-static foil
was used so I must assume the chip was bad from the factory).  This
machine still booted (with 1/2 meg.) since the boot found bad memory
in the top 1/2 meg.  As a developer, (i.e. SID debugger and schematics)
I found it relatively straightforward to find and fix the problem,
although time consuming.  All of these used the (unnecessary?) 68
ohm resistors.

It is up to the individual to assess their level of expertise in 
a mod like this, and/or their willingness to gamble on the outcome
and the possible steps they may have to take if things go bad.

My experience has been positive on the whole.
-- 
Jim Luscher / Nicolet Instruments / Oscilloscope Div.
5225 Verona Rd Bldg-2 / Madison Wi 53711 USA / 608/271-3333x2274