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From: karld@chinet.UUCP (Karl Denninger)
Newsgroups: comp.sys.ibm.pc
Subject: Speeding up True Blue ATs (6 -> 10?)
Message-ID: <954@chinet.UUCP>
Date: Mon, 4-May-87 16:13:27 EDT
Article-I.D.: chinet.954
Posted: Mon May  4 16:13:27 1987
Date-Received: Tue, 5-May-87 06:02:51 EDT
Distribution: na
Organization: Chinet, Chicago Ill.
Lines: 22
Keywords: Speed up kit IBM AT

Does anyone out there in Net-land have any pointers to speed-up kits for the
original IBM AT systems. Specifically, I am interested in upgrading a
half-dozen 6 Mhz machines to between 8-10 Mhz.

We were considering simply switching crystals, but have heard that there is
a routine in the AT's POST which will prevent bootup if the clock rate is
monkeyed with. Supposedly there is a company which has a small board out to
get around this problem -- it starts at 6 Mhz and gradually speeds up after
a preset time period (so the POST can complete first). Only problem with
this approach is that I am unable to find the reference!

Any pointers to companies making such boards/kits would be appreciated, as
would any information on doing these upgrades, problems you have had, etc.
Please mail responses to me, or call at either number listed in the .sig.

As usual, I will summarize responses to the net.

-- 

Karl Denninger				UUCP : ...ihnp4!ddsw1!karl
Macro Computer Solutions		Dial : +1 (312) 566-8912 (300-2400)
"Quality systems at a fair price"	Voice: +1 (312) 566-8910 (24 hrs)n