[rescue] Sparc 20 Diag question

rescue rescue at hawkmountain.net
Tue Dec 31 15:46:31 CST 2019


Drat, private reply.... sigh....

Happy new years eve.

-- Curt

On 2019-12-30 23:54, rescue wrote:
> I have not found any further SS20 mainboards.
>
> I have found at least some of my SS10/20 memory and cpu modules.  I
> need to go through what I have.
>
> Sorry I've been slow on this, work was busy leading into the
> holidays.... and then.... the holidays :-)
>
> Need to get through this stuff before work ramps back up again.
>
> -- Curt
>
> On 2019-12-12 03:42, Peter Stokes wrote:
>> Hi
>>
>> Just a little add on to this.
>>
>> I am often struggling to find enough larger men DIMMs for the SS20. 
>> The
>> 501-2480 is the official 64Mb DIMM, but you can use the later 
>> 501-3136 128Mb,
>> but it will only be recognised as 64MB, however they appear 
>> plentiful as they
>> were used in many of the Ultra class systems. There is one issue 
>> however and
>> that there were essentially two styles of 3136, one appears to have 
>> some form
>> of regulator on it and that does not work. The one without it is the 
>> one that
>> works. You will not damage the SS20 if you try the one with the 
>> regulator, it
>> just will not be recognised.
>>
>> Peter
>>
>> Sent from my iPad
>>
>>> On 12 Dec 2019, at 03:27, Steve Hatle <shatle at nfldinet.com> wrote:
>>>
>>> o;?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
>>>> _______________________________________________
>>>> rescue list - http://www.sunhelp.org/mailman/listinfo/rescue
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