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:
Aug. 25, 1992
Filed:
Apr. 18, 1989
Applicant:
Inventor:
Sakou Ishikawa, Hadano, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395375 ; 364D / ; 3642451 ; 364245 ; 3642452 ; 3642549 ; 3642551 ; 3642548 ; 364247 ;
Abstract
In a data processing unit having an instruction precontrol function, when an instruction for new address mode setting, branch address generation and branching is decoded in a preexecution cycle of the instruction, a branch destination address is calculated by using an address mode of the branch destination address represented by a specific bit in operand data of the instruction, as the address mode, and the branch destination instruction is fetched based on the calculated address.