Newsgroups: comp.os.msdos.djgpp
Subject: Re: special registers in ASM
From: frenchc AT cadvision DOT com (Calvin French)
References: <01bd371c$3b3ff0a0$b1fcffc2 AT fsl22 DOT novo DOT dk> <6bt4l8$kn9$1 AT rosenews DOT rose DOT hp DOT com>
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Date: 14 Feb 98 04:03:19 GMT
Organization: CADVision Development Corporation (http://www.cadvision.com/)
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>Did you read the instruction timing for them?  THe debug registers are 10x
>slower than regular registers
>(also 10x slower than a push or a pop instruction), and CR3 is 20x slower.
>This is on a Pentium.  Also,
>you can't do anything with them, just move to and from.  Rewrite your code
>to be more register efficient
>or just push/pop.

How does push/pop relate time-wise to actually storing/retrieving from 
memory. I was under the impression the push/pop was rather slow compared to 
direct memory accessing, but I haven't programmed asm since 386 days (ahhh... 
=) I'm just getting into it now and finding it quite fun, except I can't get 
my code to debug under RHIDE at all. :-(

- Calvin -