[SunHELP] Testing a Sparc 20

[Peter Stokes]

Hi

The key numbers on any of the Sun boards are the 501-XXXX or 370-XXXX
(depends if OEM part or not). The XXXX are the first 4 digits of the serial
number and define the board.

I just had a quick check and the SS20 is probably 501-2324 (Sparc 10 had
numerous numbers which is what I was thinking of)

To force the MBus to 40Mhz, set J1401 to link pins 1-2 (default 2-3 is
selection by the MBus module, as SM40 is not supported would not like to
rely on this)

Peter

-----Original Message-----
From: sunhelp-admin at sunhelp.org [mailto:sunhelp-admin at sunhelp.org]On
Behalf Of Bran Tregare
Sent: 29 June 2001 08:50
To: sunhelp at sunhelp.org
Subject: RE: [SunHELP] Testing a Sparc 20


At 08:20 AM 6/29/01 +0100, you wrote:
>Sparc 20 will run SM40, but you are running the SM30 outside its spec'd
>range. As well as this you need to make sure that the base board freqency
is
>set to 40Mhz, it is normally set to 50Mhz for the SM50, SM51 etc. Depending
>on the board this is set slightly differently. If you need to know for a
>specific, please let me know.
>
>Peter
The circuit board in this sparc 20 has a bear in a top hat on it, does that
help id it any?

I know that the SM30 is running outside spec, but after asking a few
questions around, apparemtly the SM 30 and SM40 are the same chip and
circuitboard everything on both are identical, other than the differing
barcodes that sun put on them. According to a tech in Sun's support group
they are the same cpu, just differing barcodes.

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