A word oriented data processing system includes a plurality of system units all connected in common to a system bus. Included are a central processor unit (CPU), a memory system and a high speed buffer or cache system. The cache system is also coupled to the CPU. The cache includes an address directory...http://www.google.de/patents/US4214303?utm_source=gb-gplus-sharePatent US4214303 - Word oriented high speed buffer memory system connected to a system bus
