as a sop to customers after canning
Multics in 1985. Opus
was to provide everything Multics had and more, plus total
"Opus" was a code name, the system was officially named VS3
(short for HVS R3 or Honeywell Virtual System Release Three).
It was to run on the
DPS6-plus hardware known internally as
the MRX and HRX, and be all things to all people.
The hardware was a dud (though it did run the native DPS6
software just fine), and the goal was, shall we say,
ambitious. The effort was cancelled by
Bull in 1987, in
favor of another project going on in France.