*BSD News Article 16253


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From: sn@plato.chemietechnik.uni-dortmund.de (sn)
Newsgroups: comp.os.386bsd.questions
Subject: Re: Vesa Local Bus 50 MHz IDE controller / 386bsd?
Date: 18 May 1993 19:15:28 GMT
Organization: Universitaet Dortmund, CT, Germany
Lines: 23
Message-ID: <1tbckgINN7vi@unidoct.Chemietechnik.Uni-Dortmund.DE>
References: <1stqsdINNk3v@unidoct.Chemietechnik.Uni-Dortmund.DE> <C75L96.B7B@csi.compuserve.com> <C78BBt.2yrr@austin.ibm.com>
NNTP-Posting-Host: plato.chemietechnik.uni-dortmund.de

guyd@austin.ibm.com (Guy Dawson) writes:

>> 	My advice is: don't.  The VL local bus is only "officially"
>> rated at 33MHz and a variety of interesting things begin to happen when
>> you run cards on it at 50.  It tends to overheat the CPU and the failure
>> rate of the cards is pretty substantial.  I would advise that you either
>> wait to see what happens with the Intel local bus (I know, I know, but
>> the word is that it is really a decent product) or get a 33MHz board
>> instead.

>There is also a VESA spec for slots at 40Mhz - same pinouts etc, just a
>faster clock. I don't remember if it allows for 1 ( probably ) or 2 slots.

>Guy

At 40 Mhz, the VLB only allows one slot.
Anyways, I've had some people mail me with 50 MHz boards and they were
having no problems. I don't know if NOBODY has problems, but it looks
like it can be done. You just have to be lucky and get a motherboard
and cards that handle the 50 MHz.

-Sven