TRS-80 Model II Family
From Computer History Wiki
This was an expensive Tandy computer with a 68000 CPU, and up to 1MB of ram... I recall these selling for $10,000 in a configuration that could run Xenix. And they could support 3 (or more?) users. These machines, much like the Sun-1 had a custom MMU to run Unix, and as far as I know there is no emulator for it, unlike the Apple Lisa.
Some information can be found:
- http://ripsaw.cac.psu.edu/~mloewen/Oldtech/Tandy/Model6000HD.html
- http://home.iae.nl/users/pb0aia/cm/modelii.html
- http://www.trs-80.com/wordpress/trs-80-computer-line/model-ii/
Xenix can be downloaded from here: