[rescue] SPARCclassic bits

Curtis H. Wilbar Jr. rescue at hawkmountain.net
Sat Oct 20 22:20:52 CDT 2007

Marcin 'Rambo' Roguski wrote:
>> Nice... your memory must be 3rd party then.  IPX iirc uses 80ns parts.  
>> Attempting to use 80ns parts in a Classic/LX can be done, but will either not
>> work, or likely will run into corruption/crashes as you'd be pushing the parts 
>> beyond their 80ns speed.
> I suspect they will immediately bail out on test, unless classic can fall back to slower
> RAS/CAS. And ironically, it's getting harder and harder to find something slow
> (in 15 years I haven't actually seen any 72-pin SIMM that wasn't running more than
> 60 ns chips).

I think I have gobs of 80ns ram here.... in 30 pin, probably even have 
some 100ns
parts around.

I even have some SIPPs ! (1M too :-) ).

>> Good to know your parts should be fast enough to satisfy the Classic/LX 
>> though.
> Yep, I see reports that they can utilize newer true-parity SIMMs just fine.
> The memory is history itself, as it came to me with SGI Indigo, then was briefly
> utilized in DEC3000, IPX, Indigo2, another Indigo and finally another IPX.
Heh, I have some of all those except the DEC3000 :-)

I'd like to find some more 64mb 72 pin full parity simms...
I don't have enough of those :-)

-- Curt

> Rambo

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