SUMMARY: SRAM error Ultra1

From: Chris Stoddart (
Date: Wed Sep 22 1999 - 11:20:53 CDT

Thanks to the following folks, who all told me more-or-less the same
thing - poorly CPU or poorly cache:

Jim Craven <>
Lucia Gonzalez <>
Dylan Carlson <>
Richard Felkins <>
Adrian Stovall <>
Scott Kulp <>
"Schultz, Juergen" <>
"Newman, Timothy L" <>
"Thomas Carter"<>

Sun confirmed it was a CPU problem and replaced the CPU (we have a
maintenance contract). It turned out that they had to replace the
whole mainboard since the CPU was a fixture. I notice that the new
mainboard had a /huge/ heatsink and no fan - obviously a redesign because
we have had to replace two Ultra-1 CPU fans in the last year (including
the one on this machine).

Cheers again everyone,


Original message below:

> I have an Ultra1/170 running Sol 7 that has experienced a couple of
> crashes recently with the error:
> panic[cpu0]/thread=70cf7340: CPU0 Ecache SRAM Data Parity Error:
> AFSR 0x00000000.00400002 AFSR 0x00000000.37effff0
> Does this mean that one of the memory SIMMs is misbehaving? If so, any
> ideas how to find out which one from that lot above? Or indeed to deciper
> it into something more practical?
> Any info gratefully received.

Dr Chris Stoddart: Unix SysAdmin,
Department of Computer Science, 
Sheffield University, U.K.

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