Re: Strange 80x86 OPCODE

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#543

From: Arthur Rubin
Date: Wed, 29 Jul 1992 22:50

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In <3947@cruzio.santa-cruz.ca.us> aki@cruzio.santa-cruz.ca.us writes:


>Doing my thing I hit upon a truly strange op-code:

>It's 0F 3D,  i.e. 286+ 2-byte opcode that has 3D as the second
>byte.  Problem is,  that I can't find any reference to it anywhere.
>It looks like it's either something very new or undocumented.

>I considered the possibility of the 0F being a 8088/8086 POP CS,
>but the surrounding code excludes this.

>Anyone have any idea what that opcode does?

Sourcer from V Communications doesn't think it's valid in up to 486s.

--
Arthur L. Rubin: a_rubin@dsg4.dse.beckman.com (work) Beckman Instruments/Brea
216-5888@mcimail.com 70707.453@compuserve.com arthur@pnet01.cts.com (personal)
My opinions are my own, and do not represent those of my employer.
Our news system is unstable; if you want to be sure I see a post, mail it.

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Path: arc1-ca.pugleaf.net!sparky!uunet!elroy.jpl.nasa.gov!usc!noiro.acs.uci.edu!beckman.com!dn66!a_rubin
Newsgroups: comp.os.msdos.programmer
Subject: Re: Strange 80x86 OPCODE
Message-ID: <a_rubin.712450208@dn66>
From: a_rubin@dsg4.dse.beckman.com (Arthur Rubin)
Date: 29 Jul 92 22:50:08 GMT
References: <3947@cruzio.santa-cruz.ca.us>
Keywords: 80x86 Assembler Fun
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