Multiplier to selectively perform unsigned magnitude multiplicat

Details Multiplier to selectively perform unsigned magnitude multiplicat Multiplier to selectively perform unsigned magnitude multiplicat

1996-05-22

1999-02-09

Malzahn, David H.

Boots, shoes, and leggings

36476001, 364757, G06F 752

Patent

active

058703225

ABSTRACT:
A multiplier for selectively performing an unsigned magnitude multiplication or a signed magnitude multiplication with a modified Booth algorithm for a multiplication operation. It includes a selection unit which provides an extension bit for performing an unsigned magnitude multiplication in a signed magnitude multiplication which is expressed by a two's complement format, and a partial product generator for performing a sign digit operation increased by the extension bit. It preferably includes a carry look-ahead adder for generating and propagating a look-ahead carry.

REFERENCES:
patent: 4926371 (1990-05-01), Vassiliadis
patent: 5226003 (1993-07-01), Nagamatsu
patent: 5473559 (1995-12-01), Makino
patent: 5506799 (1996-04-01), Nakao
patent: 5544084 (1996-08-01), Fukumoto

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