Date: Tue, 18 Jun 1996 08:58:50 -0700 From: "Michael L. VanLoon -- HeadCandy.com" <michaelv@HeadCandy.com> To: "Eloy A. Paris" <Eloy.Paris@ven.ra.rockwell.com> Cc: "M.R.Murphy" <mrm@marmot.mole.org>, questions@freebsd.org, hardware@freebsd.org Subject: Re: FreeBSD works with Cy486DLC processors? Message-ID: <199606181558.IAA16170@MindBender.HeadCandy.com> In-Reply-To: Your message of Tue, 18 Jun 96 10:30:16 -0400. <2.2.16.19960618104803.1597ca9a@zeus.ven.ra.rockwell.com>
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>Ooppss!!! You are absolutely right. My CPU is a 486DX4 NOT a 486DLC. The
>problem was that I was looking at what the kernel gives me at boot time:
>FreeBSD 2.1.0-RELEASE #2: Mon Jun 17 12:22:05 AST 1996
> eparis@skynet.ven.ra.rockwell.com:/usr/src/sys/compile/SKYNET
>CPU: Cy486DLC (486-class CPU)
> Origin = "Cyrix"
Yeah, that's a bone-headed move on Cyrix' part. The DLC
identification code was originally taken out of a piece of code used
to identify DLC/SLC parts, published in a Cyrix manual.
Then, the idiots went and made their DX processors respond the same
way to the same test!
>The processor has "486DX4" written on top of it. My apologies for causing
>this confussion.
>Can it be that the problem is that FreeBSD is mistakenly identifying the
>processor? Can I force FreeBSD to correctly identify the processor?
Unlikely. That message is just telling you what FreeBSD found.
Unless someone has significantly changed the code since the last time
I read it, the kernel should just be using the processor the way the
BIOS sets it up.
Keeping in mind that you have a DX processor, and are seeing those
problems, you probably just have a badly designed motherboard, and
that CPU might work OK in a better motherboard.
Alternatively, you might be overheating the CPU if it's a 100MHz part.
Make sure your CPU fan is securly fastened and makes uniform contact
across the entire surface of the chip.
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Michael L. VanLoon michaelv@HeadCandy.com
--< Free your mind and your machine -- NetBSD free un*x >--
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