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echo: 80xxx
to: FERNANDO ARIEL GONT
from: BRIAN MCCLOUD
date: 1998-02-10 04:05:00
subject: micro-ops

FAG>I really thank you for your help... but the fact is that I'm looking for
FAG>the _*micro-ops*_ table...
FAG>That means, at least in Pentium II and Pentium Pro, Each instruction is
FAG>decoded to "simpler" instructions called micro-ops....
I must admit I hadn't worked enough with Pentium processors to be aware of
this.  Thank you for clarifying that these "micro-ops" aren't the same as
instruction clocks.
FAG>The speed with which a program executes depends on the orden in which you
FAG>put the instructions of the program (besides a lot of things), because
FAG>there are threee decode units, but one of them can handle some 
instructions
FAG>that the others can, so that you must put the instructions in a certain
FAG>order so that you keep all decode-units busy all the time...
FAG>It's a very simple and not-so-good explanation about Pentium II and 
Pentium
FAG>Pro microarchitecture, but it does to explain you what I am needing, I
FAG>think...
I'd say the explanation is sufficient... I also wonder if these "micro-ops"
would be useful if one were porting from a Pentium to a PowerPC... 
FAG>Anyway, thank you very much! (Do you know where I can get the table I
FAG>need?)
I can look for such a table...
((Cloud))
MauveCloud@juno.com
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