11/45 pictures & questions

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Sun Dec 28 20:28:07 2003

> Looks like the machine has no FP option, and 8K of core memory. I haven't
> decided what OS I want to run on this thing yet, maybe RT11, or RSTS, but I
> was really hoping to run 2.9BSD or Unix 7 or some flavor of unix. That's not
> gonna happen with 8K of core. I have some RL02's I could put on it. Anyone
> want to trade the bits to make it use semiconductor memory in exchange for
> the core backplane and core boards? Is FP required for anything I've

I don't think you need the floating point processor for unix. It's
useful, though.

> mentioned? I'll get it up and running on 8K to test & refurb, but definitely
> want to go the semiconductor memory route so I can run one of the above
> O/S's. Hey, can this thing use any of the memory boards I have in my 11/44?

Unlikely. The 11/44 uses special memory boards (after all it has 22 bit
addressing). You can use normal MUD memory boards in an 11/45 with the
right backplane, though. But not in the memory slots of the CPU backplane.
MUD memory boards are not difficult to find (or at least they weren't
when I was putting my 11/45 together) -- 11/34s seem to be stuffed with
them...

-tony
Received on Sun Dec 28 2003 - 20:28:07 GMT