Abstract :
This paper gives a description of the "virtual machine" of MULTICS, the multiple-user computer system conceived at M.I.T. and implementedfdhuf on the General Electric Model 645 time-sharing computer. The virtual machine is the machine which is seen by the system "user," i.e., the application programmer working at the assembly language level. The MULTICS virtual machine has a number of salient features which distinguish it from conventional machines.
