Memory control in a multipurpose system utilizing a broadcast

摘要: In a multiprocessing computer where plurality of processors, each with its own buffer memory, share main broadcast system provides processor the capability to query other determine whether modified (e.g. updated) version desired data is located in another processor''s memory. The memory control unit simultaneously initiates read cycle and signal response request for data. If found be it transferred by unit. then changed write so that replaces original switched onto bus transmitted requesting processor. Using this system, which only allows one contain any item, obtains most current such manner appears originating from