From: "Zane H. Healy" <healyzh at aracnet.com>
 ELKS will run on a 286, right?  IIRC, I've got a
286 S-100 Bus CPU
card (I know I have a 80186 card). 
There was a V6 port to the 286 for which at least some source is laying
around the net (I've never looked to see if it was remotely
complete/buildable).  V7 should be doable, if anyone remembers enough about
it to try.  There was Xenix & Venix as well, not that anyone wants to run
Xenix unless they have too...:-).
Wonder if 2BSD could be the basis of a port.  Sorta similar constraints.
Ken