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Path: utzoo!mnetor!seismo!gatech!amdcad!phil
From: phil@amdcad.AMD.COM (Phil Ngai)
Newsgroups: comp.arch,comp.sys.intel
Subject: Re: 386 pipeline details
Message-ID: <16632@amdcad.AMD.COM>
Date: Sun, 10-May-87 16:16:20 EDT
Article-I.D.: amdcad.16632
Posted: Sun May 10 16:16:20 1987
Date-Received: Sun, 10-May-87 19:11:28 EDT
References: <648@mipos3.UUCP> <2271@tekgvs.TEK.COM>
Reply-To: phil@amdcad.UUCP (Phil Ngai)
Organization: Advanced Micro Devices, Inc., Sunnyvale, Ca.
Lines: 11
Xref: mnetor comp.arch:1242 comp.sys.intel:235

In article <2271@tekgvs.TEK.COM> toma@tekgvs.UUCP (Thomas Almy) writes:
>Thus the pipeline will be filled, and a steady state instruction time will
>be calculated (in my case, interrupts were disabled as well).  The two byte
>instruction "MOV EAX,EBX" (AX,BX in my friends case) took 2.1 clocks on 
>average.  The manual says 2 clocks.  What is consuming the extra .1 clock?

Just a shot in the dark, but does the board use dynamic memory and
could refresh be slowing the program down? 

-- 
Phil Ngai, {ucbvax,decwrl,allegra}!amdcad!phil or amdcad!phil@decwrl.dec.com