28 Aug
2001
28 Aug
'01
6:07 p.m.
Hi Gunther,
I know I have said this before, but I have and will scan in the 11/785
Installation manual that covers the CPU upgrade. I will try to do
some tonight.
According to the upgrade manual:
Upgrading the KA780 to a KA785 consists of replacing the CPU
cardcage and backplane assembly, inserting new CPU modules,
replacing the memory board in the LSI-11, and attaching a new
logo to the CPU cabinet.
So you need the 11/785 card cage/backplane and a new memory
board for the console computer. No changes to power supplies.
I would think that it would be hard to source the new card cage/
backplane and LSI-11 memory board, but if you can get your hands
on a working 11/780 take it! They are really nice old hardware, its
only 0.5 of a VUP (although when you compare 1VUP to 1.5VUPs
its 33% increase).
Regards,
Tim.
Hello,
I know some of you are former VAX field service technicians or
have other deep working knowledge of this: what exactly (!)
does it take to upgrade a VAX 11/780 to a VAX 11/785 (or
11/780-5 as it was called.) I believe this includes changing
the SBI backplane. But what else does it include? Is the
console computer any different? Power supply?
As you probably all know, I have the 11/785 board set on
hand but no cabinet. Now I have the chance of transporting
one or two 11/780 accross the country. Those are in real
good shape as I gather (were stored inside!) So I figure I
rather have a nice 11/780 than a rusty incomplete 11/785
that lacks a console computer. And with some chance I can
upgrade one to an 11/780-5. So, what does it take?
thanks for your advice,
-Gunther
--
Gunther Schadow, M.D., Ph.D. gschadow(a)regenstrief.org
Medical Information Scientist Regenstrief Institute for Health Care
Adjunct Assistant Professor Indiana University School of Medicine
tel:1(317)630-7960 http://aurora.regenstrief.org