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:
Dec. 15, 1987
Filed:
Oct. 24, 1984
Patrick F Dutton, Endicott, NY (US);
Earl W Jackson, Jr, Apalachin, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A masking circuit for a multiprocessor system is disclosed. The masking circuit senses the existence and type of commands stored in the command status registers associated with the system processors. Masking begins if it is determined that information needed by one processor is located in the cache memory of another processor and is to be flushed to the main memory, which is accessible by the first processor. The masking circuit masks the command present in the command status register associated with the first processor, for the first processor to access the main memory, until after the information has been flushed from the cache to the main memory. The first processor is thus prevented from accessing the main memory until after the information has been flushed thereto.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile