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Article #6103Re: Identifying an iAPX series processo
From: Kerro Panille
Date: Mon, 31 Mar 1986 15:39
Date: Mon, 31 Mar 1986 15:39
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> One way in which you could tell the difference between an 8088
>and an 8086 (and probably between an 80188 and an 80186, but I've never
>seen any documentation for either chip) is to take advantage of the
>instruction prefetch queue. The 8088 has a five byte prefetch que,
^^^^^^^^^
>the 8086 an 8 byte prefetch queue. So if you wrote a self modifying
^^^^^^
>program that did something like replace a set carry flag instruction
>six bytes ahead with a clear carry flag instruction, you could then
>do a branch on carry to appropriate routines for each processor.
>
>Mark Nelson
I belive those are 4 bytes and 6 bytes, if I'm not mistaken. I don't have my
PC Tech Journal handy.
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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site rruxd.UUCP Path: arc1-ca.pugleaf.net!utzoo!watmath!clyde!burl!ulysses!gamma!pyuxww!pyuxv!rruxa!rruxo!rruxu!rruxc!rruxr!rruxp!rruxff!rruxd!vch From: vch@rruxd.UUCP (Kerro Panille) Newsgroups: net.micro.pc Subject: Re: Identifying an iAPX series processo Message-ID: <137@rruxd.UUCP> Date: Mon, 31-Mar-86 10:39:25 EST Article-I.D.: rruxd.137 Posted: Mon Mar 31 10:39:25 1986 Date-Received: Wed, 2-Apr-86 01:29:45 EST References: <7901@watrose.UUCP> <53500027@trsvax> <290@cernvax.UUCP> Organization: Colony, Pandora Lines: 26