Microprocessor with immediate and indirect addressing

Details Microprocessor with immediate and indirect addressing Microprocessor with immediate and indirect addressing

1973-12-26

1976-03-09

Ruggiero, Joseph F.

Communications: electrical

Digital comparator systems

G06F 900

Patent

active

039434958

ABSTRACT:
A microprocessor with a bus structure for carrying address and data signals wherein an address may be modified by an index value for indirect addressing by deriving said index value from an index register or a control word field. Immediate addressing is provided on branch instructions by providing two separate incrementing paths to avoid loss of a machine cycle during branch.

REFERENCES:
patent: 3061192 (1962-10-01), Terzian
patent: 3315235 (1967-04-01), Carneuale et al.
patent: 3374466 (1968-03-01), Hanf et al.
patent: 3689895 (1972-09-01), Kitamura
Hill et al. - Digital Systems: Hardware Organization and Design - Feb. 1973 - pp. 241-247.

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