Data processor having apparatus for controlling the selection of

Details Data processor having apparatus for controlling the selection of Data processor having apparatus for controlling the selection of

1980-12-24

1983-05-17

Malzahn, David H.

Boots, shoes, and leggings

364756, 364763, 364781, 364900, G06F 750, G06F 752

Patent

active

043843409

ABSTRACT:
A commercial instruction processor executes decimal arithmetic instructions on string decimal and packed decimal operands. A read only memory is responsive to control signals generated from the operation code portion of the instruction, a type signal from a descriptor word of the instruction, and signals indicating the present decimal digit position being processed to generate signals indicating next decimal digit position to be processed.

REFERENCES:
patent: 3878514 (1975-04-01), Faber
patent: 4075688 (1978-02-01), Lynch, Jr. et al.
Jeremiah, "Hardware Design Enhances Direct Decimal Calculations", Computer Design, Jun. 1980, pp. 118, 122, 124, 126 and 130.

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