Multi-microprocessing unit on a single semiconductor chip

Details Multi-microprocessing unit on a single semiconductor chip Multi-microprocessing unit on a single semiconductor chip

1974-11-26

1976-09-14

Nusbaum, Mark E.

Communications: electrical

Digital comparator systems

G06F 916, G06F 918

Patent

active

039809927

ABSTRACT:
This disclosure relates to a multimicroprocessor unit which is adapted for implementation in a single MOS semiconductor chip, which unit includes a plurality of sets of registers where each set represents a different processing capability. The unit further includes common elements which are shared by the different sets of registers in a time multiplex manner. The shared elements include two scratch pad memories, an arithmetic logic unit, and a control unit which incorporates a composite read only memory from which control signals are fetched to initiate the respective data transfers and arithmetic operations. This control memory acts as a decoder for encoded microinstructions retrieved from outside of the multi-processor unit. In this sense, the present invention employs both vertical and horizontal microprogramming as those terms are conventionally defined. The different sets of dedicated registers are formed of 4-bit shift registers so as to permit a four-way time slicing among the processing capabilities.

REFERENCES:
patent: 3597641 (1971-08-01), Ayres
patent: 3641511 (1972-02-01), Cricchi et al.
patent: 3757306 (1973-09-01), Boone
patent: 3758761 (1973-09-01), Henrion
patent: 3786436 (1974-01-01), Zelinski et al.

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