Скачать или смотреть Installing: Microsoft XENIX 3.3 (m68k)

This is Microsoft XENIX 3.3 (m68k) being installed on a Virtual Tandy TRS 80 Model 6000. The last actual official release for this system was 3.2, however the community have since produced an unofficial XENIX 3.3 release with many improvements.

XENIX was a massively popular UNIX based system in the 1980s. XENIX was originally developed by Microsoft, licensed from the original AT&T UNIX source code. Traditionally, most UNIX systems are based on System V or BSD, but XENIX can be considered a 3rd flavour along with its contemporaries, eventually becoming part of the SVR4 standard.

As well as some of the TRS-80 line, XENIX was also produced for Z8000, LSI-11, PC and PS/2 based systems and probably others. XENIX was also licensed to many other OEMs including IBM, SCO as well as Tandy.

The installation shows
XENIX 3.2 installation
XENIX Games
XENIX Development System 3.0
XENIX Development System 3.2 Upgrade
XENIX 3.3 Upgrade

https://en.wikipedia.org/wiki/Xenix