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From: kevin@hp-lsd.COS.HP.COM (Kevin Hall)
Newsgroups: comp.sys.intel
Subject: Re: Instruction Decoder/Clock Cycle Counter for 80386
Message-ID: <7680002@hp-lsd.COS.HP.COM>
Date: 4 Jun 90 17:19:55 GMT
References: <4323@munnari.oz.au>
Organization: HP Logic Systems Division - ColoSpgs, CO
Lines: 14


	
	Care should be used when relying on the cycle numbers in the
	manual. From experience they are best case, in a vacumn, numbers.
	Actual counts are dependant on what instructions preceed you
	and come after you in the instruction queue, generally making
	the numbers worse. We were generally able to reproduce the numbers
	in the manuals by surrounding the instruction with a queue full
	of NOP's both ahead of and after.


		
Kevin Hall
hplabs!hp-lsd!kevin