Digital microprocessor system with shared decode

Details Digital microprocessor system with shared decode Digital microprocessor system with shared decode

1976-08-16

1978-02-14

Nusbaum, Mark E.

Boots, shoes, and leggings

G06F 900

Patent

active

040743551

ABSTRACT:
A digital processor which may be used in a calculator or the like is provided by an MOS/LSI semiconductor chip which contains a ROM or read-only-memory for storing instructions, a bit-parallel arithmetic unit for operating on data stored in a random access memory and control circuitry for defining the operation of the system. The control circuitry includes a programmable logic array for decoding instruction words. Space on the chip is saved by a time-shared decoder which forms part of the programmable logic array and also decodes addresses for the ROM.

REFERENCES:
patent: 3636523 (1972-01-01), De Sandre et al.
patent: 3828322 (1974-08-01), De Sandre et al.
patent: 3921142 (1975-11-01), Bryant et al.
patent: 3946216 (1976-03-01), Van Dierendonck

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