[TUHS] Can PDP-11/23 PLUS run Unix?

[Clem Cole via TUHS]

https://gunkies.org/wiki/PDP-11/23#:~:text=hampage.hu,are%20no%20problems%20with%20this.


To your questions. Because it lacks separate I/D
Space and does not support supervisor mode (only user and kernel) 2.11BSD
will not work.  However V6 and V7 are possible. I think Ultrix-11 should be
able to work and is more likely to have the low level details that 11/23
will need.


Sent from a handheld expect more typos than usual


On Thu, Feb 26, 2026 at 5:52 PM ROBERT MYERS via TUHS <tuhs at tuhs.org> wrote:

> I’ve just obtained a 11/23 Plus system off of EBay and plan to get a QBone
> to emulate memory along with a few other things.  I need to know if
> Floating Point support is a requirement as well if I can also emulate up to
> 4 Mb of memory.  I’m interested in v6/v7/BSD2.11 for Unix variants.
> Sent from my iPhone
>