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From: ayac071@ut-ngp.UUCP (William T. Douglass)
Newsgroups: comp.sys.ibm.pc
Subject: Re: NOP
Message-ID: <6375@ut-ngp.UUCP>
Date: Fri, 25-Sep-87 22:48:11 EDT
Article-I.D.: ut-ngp.6375
Posted: Fri Sep 25 22:48:11 1987
Date-Received: Sun, 27-Sep-87 07:11:33 EDT
References: <2306@sphinx.uchicago.edu> <4478@amd.AMD.COM>
Reply-To: ayac071@ngp.UUCP (Bill Douglass)
Organization: UTexas Computation Center, Austin, Texas
Lines: 13
Keywords: NOP

In article <4478@amd.AMD.COM> ching@amd.UUCP (Mike Ching) writes:
>In article <2306@sphinx.uchicago.edu> cjdb@sphinx.uchicago.edu (Charles Blair) writes:
>         The NOPs are never executed and don't slow down the
>processor.

Actually, I thought that NOPs did an OR of the AX register on itself (or some
similar operation that causes no change to data.)  As such, they DO affect the
execution time involved.

Could someone knowledgeable confirm or refute this?

Bill Douglass
ayac071@ngp.UUCP