From what I remember, the 750 will run off single-phase 110 volt. So will an RM05, but it has to be 220 (which, in the US, requires two phases to make 220).

I think only the RP06/7's really needed 3-phase, but even then, I could be wrong. Most of this DEC equipment really only needed single-phase, but balancing the load was always a good idea in places that were already 3-phase capable.



On 10/14/2019 7:44 PM, Jim Geist wrote:
I can't remember, can the 750 run off of normal power or does it require 3-phase?

On Mon, Oct 14, 2019 at 6:56 PM Arthur Krewat <krewat@kilonet.net> wrote:
There's a small intersection between Lasseter and NYIT where I currently
work. A friend worked there during the CGL/NYIT days, and when they
closed up, I dumpster dived a lot of stuff.

Including the NFS 2.0 sources that Warren currently has in the TUHS
archives ;)

Towards the end, they were using BSD 4.3 on Vaxen - I even got my hands
on a couple of 750's, which have been ruined over the years because of
environmental problems with the storage location. I do still have a
complete set of boards.

I still have an RM05 pack, labeled /pix ... probably way past the
ability to be read, I'm afraid, unless someone wants to sacrifice an
RM05 drive to try.

art k.


On 10/14/2019 5:10 PM, Jim Geist wrote:
> I mentioned earlier in this thread that my first exposure to Unix was
> on our school's VAX many years ago. Today someone from school gifted
> me an original copy of the VAX 4.2BSD Unix User's Manual, complete
> with a B&W drawing of the daemon on the cover.
>
> I didn't know that John Lasseter of Pixar fame was responsible for
> that logo.