[SunRescue] SS20 (??) is it really?

James Lockwood lockwood at ISI.EDU
Thu Jul 29 17:35:04 CDT 1999

On Thu, 29 Jul 1999, Chris Conn wrote:

>            SMCC SPARCstation 10/20 UP/MP POST version VR3.41 (09/06/94)
> CPU_#0       TI, TMS390Z55(3.x)       1Mb External cache
> CPU_#1       ******* NOT installed *******
> CPU_#2       ******* NOT installed *******
> CPU_#3       ******* NOT installed *******

It's a SS20.  The POST version message means that the code was used in
both the Sparc 10 and 20 in both uniprocessor and multiprocessor (UP/MP)

You have a single mbus module installed in the lower mbus slot with 1 CPU
on it.  It's got 1MB e-cache and has a rev 3 cache controller, so it's
most likely an SM61 module.  When it finishes POST, send a break over your
serial connection and type "module-info".  This will tell you what your
CPU is.

> Is there a framebuffer on this machine?  There is a connector <:-)  I
> read in the SUN Hardware reference FAQ that there was a SPARCstation   
> 10/20 machine; so which is it?  The bottom has written "MODEL: 544" and
> "SERVICE CODE: S20".  I am confused.

The connector will only function if a VSIMM is installed.  These are
special SIMMs that activate the onboard SX framebuffer and provide fast
8bpp and 24bpp displays.  They're getting cheaper, if you must have 24bpp
then they are by far the best way to go on a pre-Ultra system.  If you
just want a display on the cheap then pick up a GX or similar framebuffer.


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