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From: keithe@tekgvs.TEK.COM (Keith Ericson)
Newsgroups: comp.sys.ibm.pc
Subject: Re: 386 motherboard, and 387
Message-ID: <2620@tekgvs.TEK.COM>
Date: Mon, 31-Aug-87 14:46:45 EDT
Article-I.D.: tekgvs.2620
Posted: Mon Aug 31 14:46:45 1987
Date-Received: Sat, 5-Sep-87 00:56:02 EDT
References: <2245@bellcore.bellcore.com>
Reply-To: keithe@tekgvs.UUCP (Keith Ericson)
Distribution: na
Organization: Tektronix, Inc., Beaverton, OR.
Lines: 27
Keywords: Is 387 square or DIP?

>>> = somebody
>> = me
> = tom h
then me, again

In article <2245@bellcore.bellcore.com> hundt@wind.UUCP (tom hundt) writes:
>>>You can try Intel but your best bet is probably Cheetah International.  They
>>>have either the 16Mhz or 20Mhz motherboards.  Try them at 1-800-CHEETAH.
>>
>>...but make sure - as it, get it in writing - that they will accept
                                                               ^^^^^^
>>the 80387 chip. Even Intel's earlier motherboards won't.
>
>Is the 80387 packaged the same as the 80287 (40 pin DIP)?  Or is it
>a square chip-carrier package?  (If so, just look at the empty socket.)
>
My apologies - my use of "accept" is vague, prompting Tom's response.

	The problem is that earlier '386 motherboard do not generate
the correct initialization sequence for the '387. The Intel moherboards
prior to their "Fab 6" version are all guilty of this problem. (Don't
ask me what the "correct initialization sequence" is because I Don't
Know. Apparently neither did the Board designers :-)) So physically
the '387 plugs in; logically (or electronically - I'm not sure which)
it doesn't.

keith (sorry for the confusion) ericson