[rescue] SS10 / SS20 Memory and SS10 or SS20 Clone?

Sandwich Maker adh at an.bradford.ma.us
Fri Jul 18 11:09:10 CDT 2003

"From: Jochen Kunz <jkunz at unixag-kl.fh-kl.de>
"On 2003.07.18 01:13 Curtis H. Wilbar Jr. wrote:
"> Sounds like an SS20 clone that uses the Sun Microelectronics
"> SparcEngine 20 mainboard (which looks like an upgraded SS10 design
"> mainboard).

makes me wonder if the 'se20' is actually a ss10sx main board.

"Hmm. Can't find anything on sunsolve about the SparcEngine...

probably because it's industrial oem and long out of support.  i
looked for the ultra-20 - yes, there was one, essentially a u1 non-e
but with u2-style plug-in cpu, all in a ss20-shape board - but no

the u20 was intended to replace the se20 in embedded industrial apps,
but it also fits aurora chassis...  making it the smallest ultra?

"> It has the 50MHZ mbus speed (although I can't seem to
"> get mine to do it), and supports SS20 VSIMMS
"How can I determine if the MBUS is running at 40 MHz or 50 MHz? But with
"that 40 MHz oscillator near the MBUS controller it looks more like a

on a real ss20, there's a 40/50 jumper.

"BTW: What is the main difference from SS10 to SS20? Only MBUS and RAM

functionally.  the 20 [and 10sx] also has some redesigned chips.
Andrew Hay                                  the genius nature
internet rambler                            is to see what all have seen
adh at an.bradford.ma.us                       and think what none thought

More information about the rescue mailing list