|(operating system)||Realtime Disk Operating System - A Data General operating system
developed in the 1970s or 1980s. When used in conjuction with
a BASIC (e.g. Business Basic) it could support 16
concurrent users at the record locking level and two
printers all on 128K memory.|
Reputedly IBM wanted to license this for the first IBM PC but DG turned them down so they went to Microsoft instead. How different the world could have been.