[TUHS] First Unix that could run on a PDP-11 with QBUS

Ron Natalie ron at ronnatalie.com
Tue Jul 29 01:57:21 AEST 2014

We had miniunix that we were running on a 11/40 without mm moved to the 11/03 in the lab at JHU.   We replaces that with an 11/23 running our own v6-derived kernel with little difficulty.

Sent from my iPhone

> On Jul 26, 2014, at 9:37 PM, Mark Longridge <cubexyz at gmail.com> wrote:
> Hi folks,
> I was digging around trying to figure out which Unixes would run on a
> PDP-11 with QBUS.  It seems that the very early stuff like v5 was
> strictly UNIBUS and that the first version of Unix that supported QBUS
> was v7m (please correct me if this is wrong).
> I was thinking that the MicroPDP-11's were all QBUS and that it would
> be easier to run a Unix on a MicroPDP because they are the most
> compact. So I figured I would try to obtain a Unix v7m distribution
> tape image. I see the Jean Huens files on tuhs but I'm not sure what
> to do with them.
> I have hopes to eventually run a Unix on real hardware but for now I'm
> going to stick with simh. It seems like DEC just didn't make a desktop
> that could run Bell Labs Unix, e.g. we can't just grab a DEC Pro-350
> and stick Unix v7 on it. Naturally I'll still have fun checking out
> Unix v5 on the emulator but it would be nice to eventually run a Unix
> with all the source code at hand on a real machine.
> Mark
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