For sale 128K Core RAM Industrial PDP 11/40 Massbus System

Christian Gauger-Cosgrove captainkirk359 at
Sun Oct 30 17:47:29 CDT 2016

On 30 October 2016 at 18:09, Mike Ross <tmfdmike at> wrote:
> Unix? Probably a complete brain fart by me - but I thought Unix
> required a machine with separate I/D spaces and the 11/40 wasn't one
> of them?
V5 and V6 will run on an 11/40. I *think* but I might be wrong, that
V5 doesn't support split I/D.

> If I'm wrong that will be of some assistance to me actually :-)
Why, plannign to run an old UNIX on a blinkenlights '11? :P

Christian M. Gauger-Cosgrove
Contact information available upon request.

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