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From: cem@intelca.UUCP (Chuck McManis)
Newsgroups: net.micro,net.micro.pc
Subject: Re: info on AT wanted
Message-ID: <393@intelca.UUCP>
Date: Tue, 28-Aug-84 12:29:19 EDT
Article-I.D.: intelca.393
Posted: Tue Aug 28 12:29:19 1984
Date-Received: Thu, 30-Aug-84 11:07:44 EDT
References: <150@ucsbcsl.UUCP> <903@trwrba.UUCP>
Organization: Intel, Santa Clara, Ca.
Lines: 24

In reference to the incompatibility of using PC boards with the AT, this
is sorta of true and sort of false. The PC AT has an additional card edge
connector in "front" of the PC compatible edge connector. This extra 
connector has the extended address lines and some other useful signals 
that are present on the 80286, the problem arises from the fact that some
manufacturers, in order to get an extra couple of square inchs of board
space made there boards with an overhang. In military jargon this "conflicts"
with the second connector. Attempt at picture follows :


		Bad				Good
|				|	|				|
|				|	|				|
|		      +-+	|	------------------------+       |
+---------------------+ +-------+				+-------+ 

So if you have a "good" board it will work. 

-- 
-- Chuck                                    - - - D I S C L A I M E R - - - 
{ihnp4,fortune}!dual\                     All opinions expressed herein are my
        {proper,idi}-> !intelca!cem       own and not those of my employer, my
 {ucbvax,hao}!hplabs/                     friends, or my avocado plant. :-}
                             ARPAnet    : "hplabs!intelca!cem"@Berkeley