[TUHS] Is there a good, even definitive, list of reimplementations of the Unix kernel? What would good cut-off criteria be?

[Clem Cole via TUHS]

Al. That’s not uniflex. Adam and I have been communicating for a number of
years.

The 4404 was the product version of the Magnolia machine we built in
Teklabs. The OS was called Magix and started as V7 system when it was based
on the X series experimental chip that would eventually become the 68000.
Steve Glaser and I were the primary OS developers. Roger Bates (of Xerox
Alto and Dorado fame)  much of the HW, although I created the original
PDP-11 style base limit MMU.  If you do an Internet search you can find for
the original Magnolia papers.   Later when Roger Bates replaced the 68000
with a 68010, the OS was upgraded to be based on 4.1BSD.  That version was
the base for the 4404.  That said, I believe the 4404 itself was shipped on
a System III license.  It was also the HW used for the Tek Smalltalk system
which it could run instead of Unix.

Sent from a handheld expect more typos than usual


On Tue, Apr 21, 2026 at 11:10 AM Al Kossow via TUHS <tuhs at tuhs.org> wrote:

> On 4/21/26 4:27 AM, Brad Spencer via TUHS wrote:
> > Phil Budne via TUHS <tuhs at tuhs.org> writes:
> >
> >> Wesley Parish wrote:
> >>> Not forgetting, Doug Braun's UZI - Unix for the Z80
> >>
> >> How about UniFLEX and OS-9 for the 6809?
>
> someone has been re'ing 68K uniflex for a while for the
> tektronix 4404
>
>
> https://forum.vcfed.org/index.php?threads/advice-on-tuning-unix-process-scheduler.1257112/#post-1498893
>
> and other threads there by him
>
>