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:
Jun. 17, 1997
Filed:
Jan. 16, 1996
Bruce Ernest Whittaker, Mission Viejo, CA (US);
Leland Elvis Watson, Mission Viejo, CA (US);
Unisys Corporation, Blue Bell, PA (US);
Abstract
An enhanced computer system architecture provides a processor supported by a general cache and a mini-cache wherein the mini-cache will supply requested data words not available in the general cache thus eliminating the extra clock periods necessary to access main memory. The mini-cache stores frequently used data words and is refilled concurrently during processor command execution and is settable for handling data words or code words or both. A data queue storage stores a block of words which duplicate words in main memory. If the requested address matches an address register block in the mini-cache, the data queue store will make the words in the data queue available to requests from the processor. The mini-cache also monitors the system bus for any 'write' operations which might change the validity of the data in the address register block of the mini-cache. In this case, the data stored in the mini-cache is invalidated and cannot be used by the processor. Additionally, the mini-cache can be added to or removed from system operations.