Re:
1979
First multi-user operating system CROMIX (UNIX derivative)
First multi-user operating system...what? On a micro? Maybe.
Even then, dubious. When did OS-9 come out?
IIRC, I was using a multiuser Alpha Micro (probably an AM 100)
in my apartment around June or July of 1978. It was based on the
Western Digital microengine, which emulated a DEC 11.
Stan