Re: PUSH on i8088/i80x86

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Article #21995

#21995

From: Gordon LETWIN
Date: Tue, 09 Jan 1990 01:43

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In article <5524@bd.sei.cmu.edu>, firth@sei.cmu.edu (Robert Firth) writes:
> 
> Well, I just checked my manuals for the 8086, 8088, 80286 and 80386.
> As best I can determine, all of them agree on this
      .....
> . There is no difference among the 80xxx processors in the semantics
>   of the PUSH instruction

This is totally wrong.  It's a fact that the handling of "push sp" differs
between some of these processors.  I forget which does what and am too
lazy to look it up, but this is *fer sure* listed in a difference table
that Intel has somewhere.  And I've seen it used as part of a "identify
processor" subroutine.

	Gordon letwin
	Microsoft

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!microsoft!gordonl

References: <182DAVISTD@MSU> <5524@bd.sei.cmu.edu>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!microsoft!gordonl
From: gordonl@microsoft.UUCP (Gordon LETWIN)
Newsgroups: comp.arch
Subject: Re: PUSH on i8088/i80x86
Summary: Push differences
Message-ID: <10190@microsoft.UUCP>
Date: 9 Jan 90 01:43:55 GMT
References: <182DAVISTD@MSU> <5524@bd.sei.cmu.edu>
Organization: Microsoft Corp., Redmond WA
Lines: 16

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