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_at_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
>
>
Received on Tue Aug 28 2001 - 18:07:54 BST