Apparatus and method for computation of sticky bit in a multi-st

Details Apparatus and method for computation of sticky bit in a multi-st Apparatus and method for computation of sticky bit in a multi-st

1996-06-28

1998-06-23

Ngo, Chuong Dinh

Boots, shoes, and leggings

36471508, 36474501, 36474805, G06F 700, G06F 738

Patent

active

057711836

ABSTRACT:
Provided is a multi-stage shifter for use in both alignment and normalization shifters that provides faster implementation of the shifting process, requires less hardware and is less complex. One embodiment of the present invention provides a shift controller generating shift controller signals and a multi-stage normalization shifter having distinct multiple stages, coupled to a shift controller and receiving a number for normalization. The multi-stage shifter shifts the input number at predetermined increments at each stage and producing a sticky bit output at each stage that participates in the final sticky bit. These sticky bit outputs are ORed together to produce the final sticky bit. The present invention provides for production of the sticky bit with less hardware without sacrificing performance.

REFERENCES:
patent: 4782457 (1988-11-01), Cline
patent: 4887232 (1989-12-01), Wolrich et al.
patent: 4901263 (1990-02-01), Ho et al.
patent: 4999796 (1991-03-01), DeWitt et al.

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