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:
Sep. 28, 1993
Filed:
Oct. 12, 1990
Applicant:
Inventors:
Michael Fuccio, Santa Clara, CA (US);
Sanjay Desai, Sunnyvale, CA (US);
Assignee:
LSI Logic Corporation, Milpitas, CA (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G11C / ;
U.S. Cl.
CPC ...
395425 ; 364D / ; 364240 ; 36424341 ; 395575 ; 365201 ;
Abstract
A microprocessor with embedded cache memory is disclosed. In a 'test mode' of operation, caches are accessed directly from the memory interface signals. Direct writing and reading to/from the instruction and data caches allows the testing of the functionality of the cache memory arrays. External memory interface is granted to an external master via a bus arbitration mechanism so that the test mode operation can be utilized.