Article View: comp.sys.intel
Article #905Re: Undocumented instructions in x86 CPUs
From: A. Mostert
Date: Sun, 08 Nov 1992 11:34
Date: Sun, 08 Nov 1992 11:34
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In article <Bx9sv5.1yo@aeon.in-berlin.de> thomas@aeon.in-berlin.de (Thomas Wolfram) writes: >PS: What is the '386 bit string stuff'? On early 386s there were IBTS and XBTS (Insert/eXtract Bit String) instructions, but they were removed in later versions. They are absent in all versions of the 486. I don't know the opcodes or exactly what they do. +----------------------------------+---------------------------------------+ | A. Mostert, Stellenbosch, RSA | "WAFTI" - GFMTHC, SLATFATF, D. Adams | | mostert@cs.sun.ac.za | | |__________________________________|_______________________________________|
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Newsgroups: comp.sys.intel Path: arc1-ca.pugleaf.net!sparky!uunet!psgrain!hippo!rga1.itrga.sun.ac.za!mostert From: mostert@cs.sun.ac.za (A. Mostert) Subject: Re: Undocumented instructions in x86 CPUs Message-ID: <mostert.55@cs.sun.ac.za> Sender: news@hippo.ru.ac.za Organization: University of Stellenbosch References: <mostert.51@cs.sun.ac.za> <Bx9sv5.1yo@aeon.in-berlin.de> Date: Sun, 8 Nov 1992 11:34:12 GMT Lines: 11