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:
May. 06, 1997
Filed:
Nov. 03, 1994
Toshimichi Matsuzaki, Mino, JP;
Nobuo Higaki, Osaka, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
The object of the present invention is to provide an interruption processing apparatus which allows for improvements in operational speed and offers flexibility for a variety of systems, while using a lower amount of hardware. When an interruption occurs, then for the present invention shown in FIG. 2 , the corresponding interruption request flag in the interruption control register 1 in the group interruption control unit 5 is set. The interruption request unit 2 then outputs the interruption signal to the CPU 6 based on the interruption request flag. The interruption level arbitration unit 3 adjusts any conflict with other group control units and outputs, as the arbitration result, a signal showing whether output is possible or not for the interruption signal. The group number output unit 4 then outputs the fixed group number for the group in accordance with the arbitration result in response to access from the CPU 6. Once the CPU 6 receives the interruption request signal, no matter from what group interruption control unit the interruption was from, it activates the start of a program starting at the same address.