What is the VME bus?

VME (Virtual Machine Environment) is a mainframe operating system developed by the UK company International Computers Ltd (ICL). Originally developed in the 1970s (as VME/B, later VME 2900) to drive ICL's (then) new 2900 Series mainframes, the operating system is now known as OpenVME incorporating a Unix subsytem, and runs on ICL Series 39 and Trimetra mainframe computers.