On Sequent Symmetry S81 and PC Jr.

From: Christopher Smith <csmith_at_amdocs.com>
Date: Fri Dec 14 11:08:31 2001

Since these two are probably the only not-yet-functional machines I haven't
posted questions to this list about, I've decided to ask about them. Easy
one first:

Can anybody give me the pinout of the power-connector for the PC-Jr. I
don't have a power cord. Failing that, has anyone got a spare? :) (If I
understand properly, the power supply is inside, and the power running
through the cord should be AC, right?)

Next, the hard part:

I have a Sequent Symmetry S81. It's in need of at least the following:

CPU boards

RAM boards

Drives, but I can probably handle that...

A version of DYNIX which will support it (likely on QIC-120)

For those of you who don't know it, this is a 1987 model mini that used
Intel CPUs in parallel. Up to 30 (IIRC) 386/16 cpus, on boards which
contain sets of two could be used. Each CPU had a dedicated Weitek
co-processor, too. I believe it was UMA/shared memory. I also believe that
the peripheral bus was VME. I have quite a set of boards in that bus right
now, whatever it is, and would be interested in any help I could get in
cataloging them and figuring out what I've got.

I believe that the system was board-for-board compatible with the S27, and
the only difference was the enclosure. Speaking of which, I could also use
help in determining whether I can hope to get this running on normal
wall-power. The system is built-in to a rack, which has an inch-thick cord
(no plug :/) coming out of it. It seems on the inside of the rack that the
power is broken out into something more manageable, and, IIRC, 115 - 120
volts. (It's been a while since I've pulled it out and looked.)

I would like to get this system working, so...

Does anyone know where to find parts or system software?

Is there anyone who could possibly help me ID some of the parts already in
the system? I'll try to get all the serial numbers, etc, from the boards if
there are any takers.

What are my chances of getting this thing to run off of wall-power without
blowing anything up?

Regards,

Chris

Christopher Smith, Perl Developer
Amdocs - Champaign, IL

/usr/bin/perl -e '
print((~"\x95\xc4\xe3"^"Just Another Perl Hacker.")."\x08!\n");
'
 
Received on Fri Dec 14 2001 - 11:08:31 GMT