Oh yes, I read Eldon Halls book on that quite a few years ago. Meetings
held to discuss competing potential uses for a word of memory that had
become free.

That one would be a challenging Plan9 port..

On Fri, 12 Oct 2018 at 05:13, Lyndon Nerenberg <lyndon@orthanc.ca> wrote:

> Digby R.S. Tarvin writes:
>
> > Agreed, but the PDP11/70 was not constrained to 64KB memory either.
>
> > I do recall the MS-DOS small/large/medium etc models that used the
> > segmentation in various ways to mitigate the limitations of being a 16
> bit
> > computer. Similar techniques were possible on the PDP11, for example
>
> Coincidental to this conversation, I'm currently reading "The Apollo
> Guidance Computer: Architecture and Operation" by _Framk O'Brien_.
> (ISBN 978-1-4419-0876-6)  Very interesting to see what you can do with
> a 15 bit architecture when sufficiently motivated.
>
> --lyndon
>
>