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From: callen@inmet.UUCP
Newsgroups: comp.sys.mac
Subject: new ROMs and 3rd party upgrades
Message-ID: <127200004@inmet>
Date: Fri, 3-Apr-87 16:00:00 EST
Article-I.D.: inmet.127200004
Posted: Fri Apr  3 16:00:00 1987
Date-Received: Thu, 9-Apr-87 00:49:46 EST
Lines: 49
Nf-ID: #N:inmet:127200004:000:1857
Nf-From: inmet.UUCP!callen    Apr  3 16:00:00 1987




Last weekend I helped a friend do the old Dr. Dobbs upgrade on his
128K Mac to 512K, bringing it into the 20th century. Today he went down
to a local Apple dealership to finish the job, by getting the ROM/disk
upgrade, so he would have a 512KE.

Imagine his surprise when the dealer told him that the latest rev of the
ROMs (rev "C"?) will NOT work with most 3rd party upgrades, only with a
"real" 512K Mac! The dealer had run into this problem several times.
Luckily for my friend, the dealer was able to scrounge some old
rev "B" ROMs off a floor demo 512KE.

I *KNOW* that this has to be a recent change, because a Mac that I
upgraded a few months ago accepted new ROMs and drive without a hitch.

How can this be? Does a "real" 512K board decode some address lines
that the Dr. Dobbs upgrade does not? I mean, how can the ROMs even
FIND OUT that this upgrade is not "the real mac-coy?" (sorry... :-)

Does anyone have any idea what would have to be done to make a homebrew
upgrade look like a factory board?

And now...

>>>>> FLAME ON! <<<<<

What POSSIBLE reason could CRAPple, uh, Apple have for introducing this
sort of problem EXCEPT to force their customers to buy THEIR upgrades?!?
THIS SUCKS! All it is going to do is generate 1) a lot of hostility
among their customers and 2) a traffic in black market ROMs. I have every
intention of taking my 512KE ROMs that *DO* work with the Dr. Dobbs
upgrade and offering to copy them FOR ANY POOR SLOB WHO NEEDS THEM!
512Kbit EPROMs have finally dropped a price where that's a reasonable
option.

I really like my Mac, but Apple just keeps right on stickin' it to us.

<<<<< flame off >>>>>

-- Jerry "not one penny for blackmail" Callen
   Intermetrics, Inc.
   733 Concord Ave.
   Cambridge, MA 01238

   ...{ima,ihnp4}!inmet!ada-uts!callen

   Do *YOU* speak for your employer? I certainly don't.