Microprocessor shifter using rotation and masking operations

Details Microprocessor shifter using rotation and masking operations Microprocessor shifter using rotation and masking operations

1995-10-31

1998-03-17

Treat, William M.

Boots, shoes, and leggings

395564, 395565, G06F 9305

Patent

active

057294828

ABSTRACT:
A shifter design which is useful in microprocessors is presented. The shifter can perform the operations of a shift right, shift left and shift right arithmetic in which the sign bit of the shifted data word is replicated into the vacated bit positions caused by the shift to the right. The shifter has a rotation count unit, a rotation unit, a mask decoder unit and a logic unit for high-speed operation and occupies a minimal amount of area in an integrated circuit.

REFERENCES:
patent: 3395396 (1968-07-01), Pasternak
patent: 3969704 (1976-07-01), Liebel, Jr.
patent: 3982229 (1976-09-01), Rouse et al.
patent: 4139899 (1979-02-01), Tulpule et al.
patent: 4396994 (1983-08-01), Kang et al.
patent: 4467444 (1984-08-01), Harmon, Jr. et al.
patent: 4569016 (1986-02-01), Hao et al.
patent: 4653019 (1987-03-01), Hodge et al.
patent: 4766566 (1988-08-01), Chuang
patent: 4839839 (1989-06-01), Tokumaru et al.
patent: 4903228 (1990-02-01), Gregoire et al.
patent: 5379240 (1995-01-01), Byrne
patent: 5590350 (1996-12-01), Guttag et al.

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