On Thu, 12 Apr 2007, David W. Erhart wrote:
Sounds like the PC-MOS I used in the mid-80's to
build a multi-user
system using an IBM PC/AT with an expansion box that had one CGA card
per user. The expansion box had special cables for monitor and keyboard
(thick & bulky). This let me run DBase III, Wordstar 2000, etc. in an
office for up to eight stations. Each station appeared to have the
PC/AT to itself. Worked really well.
(WORDSTAR on 1/8 of an 8MHz AT == WORD on 500MHz Pentium)