Logic Controller for Time Multiplexed Data Bus Interface.
DEPARTMENT OF THE ARMY WASHINGTON DC
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The present invention relates to multi-unit electronic systems requiring digital communication between units and, more particularly, to systems including a common data bus for communication of digital data between all units. A firmware programmed microprogram memory controls data to and from a standard logic controller operative to control the transfer of data between a time multiplexed data bus and a shared buffer random access memory. The logic controller performs most of the functions in storage and retrieval of the data in the shared buffer random access memory thus freeing the time of a central processing unit for the more time-consuming functions of processing data. Thus, the logic controller and central processing unit are substantially transparent to each other.
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