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:
Mar. 04, 2003
Filed:
Dec. 16, 1999
Michiharu Hara, Kawasaki, JP;
Aiichiro Inoue, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
In an instruction control apparatus that enables a plurality of instructions of different instruction lengths to be selected simultaneously from an instruction buffer, the amount of circuitry is reduced while achieving high speed processing. The instruction control apparatus includes a selection circuit and a pointer that points to the beginning of the next instruction word, within the instruction sequence fetched in a holding means, to be loaded into an execution stage. The selection circuit first selects a portion of the instruction sequence, starting from the beginning pointed to by the pointer and extending until reaching a maximum length of instructions that can be loaded into the execution stage, then simultaneously examines the lengths of instructions contained in the selected portion on the basis of a minimum instruction length unit, and selects the plurality of instructions to be loaded into the execution stage, based on the combination of the instruction lengths. One or more instructions thus selected are held in a plurality of loading ports.