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.

Date of Patent:
Oct. 02, 1990

Filed:

Dec. 04, 1989
Applicant:
Inventor:

Kazuyuki Sato, Tokyo, JP;

Assignee:

Kabushiki Kaisha Toshiba, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ; 3642802 ; 36424341 ; 36424292 ;
Abstract

A microprocessor includes an initializing section for generating a reset signal, in response to an input reset instruction. A controller outputs a bus acquisition request to the microprocessor, in response to the reset signal output from the initializing section. The microprocessor is reset in response to the reset signal output from the initializing section, and generates a bus acquisition acknowledge in accordance with the bus acquisition request output from the controller, thereby releasing a bus and holding an operation state. The controller initializes a cache directory, using the bus which is released in accordance with the bus acquisition acknowledge from the microprocessor.


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