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:
Jul. 31, 1990
Filed:
Sep. 07, 1988
Clarence W DeKarske, St. Paul Park, MN (US);
Aaron C Peterson, Columbia Heights, MN (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
A high-speed partitioned set associative cache memory is provided with a plurality of cache memory boards. Each of the boards is provided with a partial data array and a full tag array on each board. At least one memory address register is mounted on each of the boards with the partial data array and the full tag array for receiving a unique address from the central processing unit which enables the plurality of memory address registers to simultaneously access addresses in the partial data arrays on different boards and to also address tag addresses associated with the data addresses by sequencing controls mounted on a separate board with logic circuits which monitor output signals from the data arrays and the tag arrays. The output signals resulting from accessing memory locations in the cache memory are coupled to logic circuits for determining the type of error and the exact array where a single error has occurred.