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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.:

US 5159688 B1

PDFFull Text
Date of Patent:
Oct. 27, 1992

Filed:

Apr. 25, 1991

Information processor performing interrupt operation in two modes

Applicant:
Inventors:

Osamu Matsushima, Tokyo, JP;

Yukio Maehashi, Tokyo, JP;

Shigetatsu Katori, Tokyo, JP;

Masahiro Nomura, Tokyo, JP;

Hiroko Shinohara, Tokyo, JP;

Kohichi Kariya, Tokyo, JP;

Mitsue Abe, Tokyo, JP;

Assignee:

NEC Corporation, Tokyo, JP;

Attorney:

Sughrue, Mion, Zinn, Macpeak & Seas

Primary Examiner:

Eddie P Chan

Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
395725 ; 395375 ; 395275 ; 364D / ; 3642329 ; 3642421 ; 3642808 ; 3642627 ; 3642473 ;
Abstract

An information processor has at least one interface unit by which the processor is coupled to a peripheral equipment. The interface unit can selectively generate either a first mode signal or a second mode signal when the processor performs an interruption operation according to request from the peripheral equipment. When the processor performs the interruption operation in response to the first mode signal, a stack operation for saving information necessary to restart a program execution which is stopped by the interruption to a stack memory is performed before start of the interruption operation. While the processor can perform the interruption operation in response to the second mode signal without the stack operation, whereby an improved processor with less overhead can be provided.

Find Patent Forward Citations

Matsushima, Osamu. (1992). Information processor performing interrupt operation in two modes (U.S. Patent No. 5159688). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5159688

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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