Subtraction/shift-type dividing device producing a 2-bit partial

Details Subtraction/shift-type dividing device producing a 2-bit partial Subtraction/shift-type dividing device producing a 2-bit partial

1996-12-06

1999-08-31

Moise, Emmanuel L.

Boots, shoes, and leggings

G06F 752

Patent

active

059462230

ABSTRACT:
A first subtracting means subtracts divisor data from dividend data or partial remainder data. In parallel with the subtraction of the first subtracting means, a comparing means performs a comparison between the highest-3-bit data of the dividend or partial remainder data and that of the divisor data. A first selecting means supplies, after shifting leftward by one bit, the dividend data or partial remainder data, or output data of the first subtracting means to a second subtracting means in accordance with a comparison result of the comparing means. A 2-bit partial quotient is determined based on the comparison result of the comparing means and subtraction results of the first and second subtracting means. As a result, the critical path is simplified and hence the delay time is shortened.

REFERENCES:
patent: 5481745 (1996-01-01), Tatsumi
patent: 5485414 (1996-01-01), Yao et al.
patent: 5493523 (1996-02-01), Huffman
patent: 5517439 (1996-05-01), Suzuki et al.

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