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Mail Archives: djgpp/1998/01/23/13:19:43

Message-Id: <m0xvi48-000S25C@inti.gov.ar>
Comments: Authenticated sender is <salvador AT natacha DOT inti DOT gov DOT ar>
From: "Salvador Eduardo Tropea (SET)" <salvador AT inti DOT gov DOT ar>
Organization: INTI
To: jah AT rrnet DOT com (Hjelmo), djgpp AT delorie DOT com
Date: Fri, 23 Jan 1998 15:24:57 +0000
MIME-Version: 1.0
Subject: Re: Speed problems with AMD K6
In-reply-to: <6a5qvn$hp$1@news.rrnet.com>

jah AT rrnet DOT com (Hjelmo) wrote:

> Salvador Eduardo Tropea (SET) (salvador AT inti DOT gov DOT ar) wrote:
> : michaelm AT moon DOT dataplusnet DOT com wrote:
> 
> : > Actually, I think all AMD K6 processors run at 60 or 66 mhz bus speed and
> : > all Cyrix do too (except for the one that runs at 75mhz).  Thus, I would
> : > probably suspect that it has to do either with the OS or maybe DJGPP
> : > itself (probably software related).
> :  
> : I think that Cyrix PR166 is a 150MHz or 180MHz CPU but not 166MHz. AMD K5 
> : speeds aren't announced in the AMD pages, etc ... So double check it.
> 
> I don't think that the bus runs at 75mHz, at least I've never heard of a
> bus running at that speed..  
I have a mother (ASUS) that supports 75 and 83 MHz but ASUS says isn't 
recomended to use these speeds.

> Also, it just seems silly that certain
> software would run slower on compatible processors for internal reasons
> when everything else runs faster...  I'd say it has to be bus speed.
You are wrong, the original post clearly talked about DJGPP+ALLEGRO that means 
graphics with 99% of probability and the video card speed is TOO sensitive to 
the bus speed, in some video boards a faster bus produeces an slower result 
(due to the wait states needed).

SET 
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Salvador Eduardo Tropea (SET). (Electronics Engineer)
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