Shifter/rotator with preconditioned data

Details Shifter/rotator with preconditioned data Shifter/rotator with preconditioned data

1993-03-08

1995-01-03

Envall, Jr., Roy N.

Boots, shoes, and leggings

G06F 738

Patent

active

053792408

ABSTRACT:
Rotate circuitry operable to perform rotate operations on various size operands including preconditioning circuitry (10) for duplicating an operand a predetermined number of times to form a preconditioned word. The rotate operation is performed by shifter (22) which shifts the preconditioned word by a specified number of bits. For rotate through carry operations, Cy bit of the carry flag is inserted in the preconditioned word prior to shifting.

REFERENCES:
patent: Re33664 (1991-08-01), Kang et al.
patent: 4472788 (1984-09-01), Yamazaki
patent: 4839839 (1989-06-01), Tokumaru et al.
patent: 5113516 (1992-05-01), Johnson

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