I was looking for something else and ran across a
two-binder
set of something called "PC-MOS" by The Software Link, circa
1992. I opened the shrinkwrap on the nstallation manual and
the thing looks like
it's a multi-user version of MS-DOS, talking to terminals. I
appear to have a 5 user version.
Anyone familiar with this animal? The version is 4.2.
I remember this!
It was a multi user MS-DOS. It supported a number of 8 port serial cards
of the same generation (Starcomm or something like that). You'd attach
terminals to the serial board and run software that was written to run
under PC-MOS. Medical office software was what I mostly saw on these
systems.