Subject: Re: AMD or Cyrix?
To: Michael L. VanLoon -- HeadCandy.com <michaelv@HeadCandy.com>
From: Stefan Grefen <grefen@convex.com>
List: port-i386
Date: 06/04/1996 11:01:49
In message <199606040007.RAA18294@MindBender.HeadCandy.com> "Michael L. VanLoon -- HeadCandy.com" wrote:
>
[...]
> >following message:
> >CPU: Cx486DLC (Cyrix 486-class CPU)
> >WARNING: CYRIX 486DLC CACHE UNCHANGED.
> >
> >Why does NetBSD think I've got a 486DLC?
>
[...]
> Regardless, the "UNCHANGED" part means it simply uses whatever
> settings your BIOS sets, and doesn't try to change anything (not sure
> if the DX would respond correctly to the DLC register cache settings,
> anyway). So, this should be a harmless bit of (mis?)information.
>
> Perhaps the Cyrix probe should be changed to simply print "CPU: CYRIX
> 486", or something like that, instead. Does anyone else see the DLC
> message with a Cyrix true-DX or 5x86 (or 6x86)?
I got that message on a Cyrix DX4/100. And it was slow as hell (regardless
of the BIOS settings). I enabled CYRIX_CACHE_REALLY_WORKS (or so) and
it's running fine. I didn't try just enabling the cache on the CPU
(which is prevented in locore.s if a CYRIX is detected).
Stefan
>
> -----------------------------------------------------------------------------
> Michael L. VanLoon michaelv@HeadCandy.com
> --< Free your mind and your machine -- NetBSD free un*x >--
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> Sun4/4c/4m, DEC MIPS, DEC Alpha, PC532, VAX, MVME68k, arm32...
> NetBSD ports in progress: PICA, others...
>
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> -----------------------------------------------------------------------------
--
Stefan Grefen Convex Computer GmbH, Frankfurt, Germany
grefen@convex.com Phone: +49-69-665270
"Anything that can go wrong will. It's more fun that way"
-- Sayings of Murphitus, ancient Husaquahrian philosopher
(Jack L. Chalker "Vengeance of the Dancing Gods")