Microprogrammed large-scale integration (LSI) microprocessor

Details Microprogrammed large-scale integration (LSI) microprocessor Microprogrammed large-scale integration (LSI) microprocessor

1977-04-01

1978-11-21

Thesz, Joseph M.

Boots, shoes, and leggings

G06F 916

Patent

active

041268962

ABSTRACT:
A microprogrammed LSI microprocessor comprises a read only memory (ROM) for storing therein microprograms and a decode table for the operation code of macroinstructions, and an arithmetic logic control section constructed into a one package of LSI circuit. The arithmetic logic control section is constructed into a circuit arrangement which, on the assumption that the operation code of macroinstructions be an address, sets the starting address of a corresponding macroinstruction read from the ROM in a location counter, reads from the ROM a microinstruction corresponding to the starting address set in the location counter to set this microinstruction in a microinstruction register, and arithmetically executes the microinstruction stored in the microinstruction register.

REFERENCES:
patent: 3391394 (1968-07-01), Ottaway et al.
patent: 3958221 (1976-05-01), Serra et al.
patent: 4004281 (1977-01-01), Bennett et al.

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