The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2002
Filed:
Jan. 27, 1999
Jonathan H. Shiell, Plano, TX (US);
Texas Instruments Incorporated, Dallas, TX (US);
Abstract
A data processing circuit has an adder unit divided into plural sections. Each section receives a subset of the bits of the operands and generates a subset of the bits of the resultant. A carry multiplexer is disposed between the sections. This carry multiplexer selects one of a plurality of possible carry inputs to the following sections. The data processing circuit may make the specification of the selection of the carry control multiplexers by: the opcode of the instruction; a combination of the opcode and an opcode modification field; an immediate field directly specifying carry control signals; or designation a carry control register which stores the carry control signals. The adder unit may be divided into sections of equal size or of unequal size.