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:
Feb. 07, 1984
Filed:
Aug. 03, 1981
John H Christian, Pima County, AZ (US);
Michael H Hartung, Pima County, AZ (US);
Arthur H Nolta, Pima County, AZ (US);
David G Reed, Pima County, AZ (US);
Richard E Rieck, Pima County, AZ (US);
Gerald E Tayler, Pima County, AZ (US);
John S Williams, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A plurality of addressable data storage devices are selectively directly accessed or accessed via a cache memory. Access via the cache memory uses one of a plurality of logical addresses; each of the data storage devices is represented by a plurality of the logical addresses. Each of the data storage devices can be reserved for direct access; such reservation does not apply to device accesses via the cache. Accesses to the devices are queued on a device basis.