SUMMARY: SS10 & two CPU

Hey folks!

ORIGINAL PROBLEM:

> Question about my SS10:
>
> I am trying to upgrade it....
> I attach two CPU MBUS modules (SM61) and I get the following error (no
> matter which order I put the cpus in, or even if I only use one):
>
>      ERROR : Address = 00000008, exp = 00000000, obs = 00010002, xor =
> 00010002
>      U-NUMBER : U0201 Data Access Exception
> ok boot
>
>      ERROR : Address = 00000008, exp = 00000000, obs = 00010002, xor =
> 00010002
>      U-NUMBER : U0201 Data Access Exception
> ok
>
> Currently, this system has one SM50 or SM51 (i am not sure, but here is
> the banner):
>
> SPARCstation 10  (1 X 390Z55), No Keyboard
> ROM Rev. 2.12, 128 MB memory installed,...
> ...
> and psrinfo:
>
> Status of processor 0 as of: 06/07/01 02:47:01
>   Processor has been on-line since 06/07/01 02:20:57.
>   The sparc processor operates at 50 MHz,
>         and has a sparc floating point processor.
>
> This is sun4m kernel architecture, so I don't have prtdiag utility
> available.
>
> So basically:
> 1. How do I find out which SM?? I have? (sysdef and prtconf -v were not
> very helpful)
> 2. Does anyone know what the errors above mean?
> 3. To go from one CPU to 2 CPUs, is there a jumper I have to change on
> this SS10 motherboard?
>
> Thanks so much, and will summarize.
>
> Thank you,
> Konstantin Rozinov
>
> _______________________________________________
> sunmanagers mailing list
> sunmanagers@sunmanagers.org
> http://www.sunmanagers.org/mailman/listinfo/sunmanagers

SOLUTION:
After many responses from many people, the most common answer was to
upgrade the PROM to v2.25.  I finally got around to doing it, and it
worked!  Note that it was discovered that one of the CPUs was bad, and even
with the PROM upgrade, still gave the "Data Access Exception."  So i just
replaced that CPU. =)  Now I have two SM61s running and I even added 64 mb
of ram thanks to a friend of mine (who supplied me free of charge).  Here
is the updated banner:

SPARCstation 10 MP (2 X 390Z55), No Keyboard
ROM Rev. 2.25, 192 MB memory installed, Serial #.....
.....

other advice included:
    -check memory dimm to make sure it is completely seated
    -upgrade PROM to ver. 2.25 (WORKED)
    -no, you don't need to change any jumpers on the SS10mb to enable two
or more CPUs
    -www.sunstuff.org to check hardware (serial numbers)

THANKS A LOT!!(in no order):
        "Timothy Lorenc" <tim@load.com>
        Mansell Gary <GRMansell@ricardo.com>
        "Ryan A. Krenzischek" <ryan@bbnx.net>
        dave floyd <dave.floyd@pa.press.net>
        David Manchester <David.Manchester@alphawest6.com.au>
        Rick McKinney <rtmckinney@home.com>
        "Kulp, Scott (Scott)** CTR **" <skulp@agere.com>
        lwallyci@onramp.net (Leslie Connally)


Thanks again!

Konstantin Rozinov