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:
Apr. 13, 1993
Filed:
Sep. 10, 1991
Applicant:
Inventor:
Kazuyuki Sato, Koganei, JP;
Assignee:
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ;
U.S. Cl.
CPC ...
395400 ; 395425 ; 36523003 ; 364243 ; 3642434 ; 36424341 ; 364244 ; 3642442 ; 364D / ;
Abstract
A cache LSI has an expansion pin which is set to '0' (GND) level or '1' (Vcc) level. A portion of a SET field of a cache directory is used as a field for selecting a cache LSI. Each cache LSI includes a determination circuit. The determination circuit performs a predetermined logical operation based on a level signal set at the expansion pin and a level signal of the cache selection field in the SET field, and determines whether or not an intra-chip is selected.