Tony wrote...
I think the problem is on one of the processor cards.
To find it is going
to involve diging into the logic
Oh Joy. Supposedly this set of processor cards
booted up Unix just before it
was shipped to me, but I guess you never know. I'd be more inclined to
suspect that someone/thing before me messed up something on the backplane.
-- do you have the necessary test gear
(logic probe, 'scope, etc)?
Very likely. HP logic probe, pulser, current
tracer, Tek 2246 scope, HP 1631
logic analyzer, HP freq. counter, HP bench DVM... probably most things you'd
call out :)
Do you feel happy getting amongst a machine
with over 1000 ICs in it (yes, I know the feeling. That's how I felt when
I got my 11/45. I spent weeks just reading the printset).
Happy? Absolutely! Feel
like I have a clue what I'm doing? No! But I'm
willing to learn. I have no extender cards for the machine though, so
hopefully much can be done just from the backplane side.
If you do want to go ahead with this (and I think you
should!), I'll get
out the prints and the technical manual and go through it with you.
If you can put
up with my lack of skill & knowledge, I'd love to go through
it at your direction. It'd help me learn the machine, and it'd get up and
running so I could move on to other machines and thus consolidate space in
the basement and make wife happier :)
That is, unless I get flamage for not providing scans
of these manuals.
Not from me you wouldn't :)
Jay