Malmer Jr Michael M, Perkins Cornelius C, Waldenmayer Donald W, Chowning Patrick J, Gardner Leonard R: Small reconfigurable processor for a variety of data processing applications. Burroughs Corporation, April 3, 1973: US3725868 (161 worldwide citation)

An improved microinstruction data processor capable of operating as an independent processor or as a terminal unit for a large general purpose computer employing a read/write disk memory to hold both macroinstructions and microinstructions, wherein the microinstructions implement macroinstructions. ...