11/45 pictures & questions (cleaning question too)

From: Jay West <jwest_at_classiccmp.org>
Date: Sun Dec 28 19:00:06 2003

Zane wrote...
> Do you know anything about the history of this system? Based on the odd
collection of flipchips and such that you mention and the fact that it's
only got 8k of RAM, I'm guessing that it was used as some sort of
intelligent industrial controller.

Yup, airforce or navy, forget what the previous owner said. Definitely some
type of testbed or process control or automated testing yada yada yada

> With only 8k of RAM I'm not sure you can run anything other than the PTOS
(Papertape OS). I'm not sure if DOS/Batch would fit on a 8k system as I've
not messed with it. I'm fairly sure the RAM boards in your /44 won't work
in a /45. Once you get a decent amount of RAM in the system I'd recommend
RSTS/E for an OS (it seems the most appropriate to me), and failing that
either RSX-11M/M+ or RT-11.

Oh no, I didn't strive so long for a /45 to have it run PTOS (no paper tape
reader for it anyways). Unix is my preference for this, failing that, RSTS.
But my inability to find semiconductor memory and the segmentation boards
may dictate otherwise. We'll see. This will be a very fun project. Maybe
I'll put it ahead of my 8E restoration and my 11/44 restoration :)

Hey... this machine, like some of the others I've worked on, has some very
large bundles of wiring that are virtually impossible to clean when dirt is
caked into them. Anyone found a good way to degrease and get the dirt off
wiring harnesses? My methods clean the surface but seem to mainly drive the
grit inbetween the wires making up the bundle. Anyone have a trick to this?

Jay
Received on Sun Dec 28 2003 - 19:00:06 GMT