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:
Feb. 07, 1995
Filed:
Mar. 12, 1991
Kenji Iimura, Hitachi, JP;
Sakae Miki, Komae, JP;
Shunji Shimada, Koganei, JP;
Michio Hara, Kodaira, JP;
Kenjirou Yasunari, Kodaira, JP;
Hiroshi Takahashi, Hitachi, JP;
Kenichi Kimura, Ohnojou, JP;
Akira Ikuta, Yokohama, JP;
Kenji Kawakita, Yokohama, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A system of adding an operand address included in an instruction word to the contents of a modification register to obtain an effective address, wherein address data which designates each of a plurality of data tables constituted with prescribed storage capacity, is stored in a plurality of modification registers. Prescribed address data of one of the plurality of modification registers is selected based on the instruction word. The effective address for addressing the operand is obtained by adding the prescribed address data of the one of the plurality of modification registers to address data included in the operand address. The address data included in the operand address designates addresses which correspond to addresses of the plurality of data tables.