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List:       linux-smp
Subject:    Re: Hardware: P6DNF configuration?
From:       Bodo Junglas <junglas () uni-muenster ! de>
Date:       1997-06-30 10:38:09
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On Sun, 29 Jun 1997, Edward Welbon wrote:

> This may give you a clue.  On a P6DOF board, the jumpers have these
> settings: 
> 
> J47  J48  J49  BUS
> -----------------------
> [...]
> 
> J65  J64  J63  J63  RATIO
> -------------------------
> [...]

So far I interprete the P6DNF manual, we only have a total of six jumpers 
handling the CPU/PCI-clocks ( J29,J30,J31,J32,J36,J37 )
More precise:
The Manual says
 J29  J30  J31  J32  J36  J37
 off  on   on   on   on   off     150 Mhz CPU(s)
 off  on   on   on   off  on      166 Mhz CPU(s)
 on   off  on   on   on   off     180 Mhz CPU(s)
 on   off  on   on   off  on      200 Mhz CPU(s)

THE FOLLOWING IS MERELY MY GUESS!
IF YOU TRY YOU'RE EXPERIMENTING ON YOUR OWN RISC (MOTHERBOARD/CPU(s)):
I would say that at least J36, J37 regulate the PCI-clock (60 Mhz, 66 Mhz?)
and J29, J30 the CPU-ratio (2.5:1, 3:1 ?)
Extrapolating I assume that J31 and J32 also belong to CPU-ratio. You 
might first leave the PCI-clock at 60 Mhz (or below, if possible) and 
find out the right combination for 2:1 (if it exists) after this you can 
freely experiment with the PCI-clock.
If you want to be sure you better contact someone at SuperMicro.

============================================================================
Bodo Junglas             Phone: +49-251-83-34917 (be warned: It's very old)
Institut fuer            E-Mail: junglas@uni-muenster.de
Theoretische Physik I        or: junglas@poincare.uni-muenster.de
Wilhelm-Klemm-Str. 9             junglas@chaotix.uni-muenster.de
48149 Muenster, Germany    WWW : http://planck.uni-muenster.de:8080/~junglas

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