In a data processing system, a central processor unit requests procedural data words or non-procedural data words stored in the system memory. A control store device executes firmware instructions including a local bus field for controlling the transfer of the requested procedural data words and non-procedural...http://www.google.de/patents/US4349874?utm_source=gb-gplus-sharePatent US4349874 - Buffer system for supply procedure words to a central processor unit
