Date:	Tue, 1 Feb 2000 21:48:16 -0500
Message-Id:	<200002020248.VAA01210@delorie.com>
X-Posting-Agent:	Hamster/1.3.8.0
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: I need to advice on timing...
From:	buers AT gmx DOT de (Dieter Buerssner)
References:	<F77915E7F086D31197F4009027CC81C921AA68 AT probe-2 DOT as-london DOT acclaim DOT com>
User-Agent:	Xnews/2.11.08
To:	Shawn Hargreaves <djgpp AT delorie DOT com>
Mime-Version:	1.0
Reply-To:	djgpp AT delorie DOT com

On 01 Feb 2000, you wrote in comp.os.msdos.djgpp:

>I don't know the details of exactly why this is, but presumably it is
>something to do with branch prediction, or forcing which of the two
>Pentium execution units will be used for the main loop.

Thank you, for your answer. At least I seeem not to be the only
one, who doesn't really understand this.  I cannot follow your 
argument, anyway. I would have thougt, that such a delay loop should 
be, as much as possible, independant from the processor type.
Your mention of "Pentium execution units" seems to contradict this.
Anyway, I can not think of any easier case for the branch prediction
logic, than this code. It should almost always do right. 

Regards,
Dieter

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