Wow I’m surprised a few hours googleing about and I got it running….
I found this ‘idle’ emulator (“Incomplete Draft of a Lisa Emulator”
http://sourceforge.net/projects/idle-lisa-emu ), which can infact run Xenix! It also says it can run the uniplus SYSV (so says the readme)..

Searching around I found the following site:
http://unixsadm.blogspot.com/2007/12/xenix-blast-from-past-looking-back-at.html

Whas Xenix 3.0 disk images in the DART format… which as luck would have it idle cannot mount. However I found another lisa emulator, lisaem ( http://www.sunder.net/ ) which has a tool to convert the disks from DART to DC42 (disk copy 4.2). So it was a simple matter of converting the disks

lisafsh-tool.exe “Xenix OS Boot Floppy”
quit

… etc etc… ad nasium…

Then firing up idle, setting the CPU to max speed, and booting up whenver I was going to answer a question I toggled it back to 5Mhz.. otherwise it would take FOREVER to boot… lol like the ‘good old days’.

Once the boot floppy had formatted the 5mb hard disk image, and transfered on reboot I had to tell the bootloader to boot from the profile disk..

pf(0,0)xenix

And away it went. After installing the OS & the C compiler I’m left with 23 blocks free!.. which I guess for a 5mb disk, is pretty cool.. Anyways there are assorted Xenix PDF’s which can be found here:

http://www.tenox.tc/docs/

Namely these two for Apple Lisa Xenix..
http://www.tenox.tc/docs/apple_lisa_xenix_programmers_guide.pdf
http://www.tenox.tc/docs/apple_lisa_xenix_programmers_reference.pdf
It’s amazing that lisa emulators were sort of capable of running Lisa Office System, now they can run the old unix stuff… it’s still impressive.