Edinburgh Multiple Access System

Edinburgh Multiple Access System (EMAS)
DeveloperUniversity of Edinburgh, University of Kent
Written inEdinburgh IMP
Initial release1971 (1971)
Marketing targetMainframe computers
Supported platformsICL System 4/75, ICL 2900 series of mainframes, Amdahl 470 mainframe clone, IBM System/370-XA architecture, National Advanced System (NAS) VL80 IBM mainframe clone
Default
user interface
basic command interpreter

The Edinburgh Multi-Access System (EMAS) was a mainframe computer operating system at the University of Edinburgh. The system went online in 1971.

EMAS was a powerful and efficient general purpose multi-user system which coped with many of the computing needs of the University of Edinburgh and the University of Kent (the only other site outside Edinburgh to adopt the operating system).