TOM WALKER wrote in a message to WAYNE CHIRNSIDE:

WC>->  DD> UNIX is a generic term, not a particular OS.

WC>-> Really?  When did it cease to be a trademark?

WC>I always thought Unix was System 5 Unix by Bell.

 TW> That is how it started I think .Like CP/M since then there are soem
 TW> non compatable implementations. BUT it is Still an Operating System
 TW> tha same as the mostly NON compatable versions of CP/M.

What are you talking about with non-compatible versions of CP/M?  The major
differences were in the different manufacturers using different disk
formats, but the OS itself,  and most of the software,  worked across all
machines pretty much.  There were programs (Uniform, Media Master) that
worked to get across disk formats,  too.

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