[rescue] Sparc 20 Diag question

Steve Hatle shatle at nfldinet.com
Wed Dec 11 21:25:35 CST 2019


And the verdict is bad RAM in slot 0. Moved things around and the 
machine came right up.

I'll have to dig around and see what other DIMMs I have to fill this guy 
up - minus the VSIMM which I'm going to put back in and play with, even 
though there's a CG6 in the machine, and I have a few TGXs sitting around.

Thanks for the reminder on cooling for the SM71s.B  I have 8 SM81s in my 
SS1000E. It's a lot of fun :-)

Steve

Chase Rayfield wrote on 12/11/19 1:07 PM:
> Also, you'll fool yourself into thinking the wrong slot is zero they don't go in order... check page 36 of the service manual. Slot 0 is the one furthest from the sbus/mbus slots.
>
> https://docs.oracle.com/cd/E19127-01/sparc20.ws/801-6189-12/801-6189-12.pdf
>
> Also make sure you have extra cooling SM71s are much hotter than the stock cards, I don't have any personally but they are some of the hottest modules as far as I know you don't want those modules to die from overheating SM71s are semi rare much rare than SM81s ironically. I have SM81s in mine but there is an extra fan in there and few other cards.
>
> I think a lot of people go for the SM71s as a max upgrade so they disappear quickly since people don't realize you can run SM81s as they aren't officially compatible. SM71s and SM81s were only sold in Sparcservers I think since those have hefty cooling.
>
> Chase
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