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:
Apr. 04, 2017
Filed:
May. 21, 2014
Applicant:
Renesas Electronics Corporation, Tokyo, JP;
Inventor:
Fumio Arakawa, Kodaira, JP;
Assignee:
Renesas Electronics Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F 9/30 (2006.01);
U.S. Cl.
CPC ...
G06F 9/30185 (2013.01); G06F 9/3001 (2013.01); G06F 9/3016 (2013.01); G06F 9/30029 (2013.01); G06F 9/30058 (2013.01); G06F 9/30094 (2013.01); G06F 9/30181 (2013.01);
Abstract
Instructions for generating flags according to operands' data sizes, and instruction sets handled by a RISC data processor including an instruction capable of executing an operation on operands in more than one data size are disclosed. An identical operation process is conducted on the small-size operand and on low-order bits of the large-size operand, and flags are generated capable of coping with the respective data sizes regardless of the data size of each operand subjected to the operation. Thus, a reduction in instruction code space of the RISC data processor can be achieved.