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:
May. 02, 1995
Filed:
Oct. 13, 1993
Mark Forsyth, Fort Collins, CO (US);
Patrick Knebel, Fort Collins, CO (US);
Hewlett-Packard Company, Palo Alto, CA (US);
Abstract
A computer system implementing two levels of translation lookaside buffers (TLBs). The first-level TLBs are small, two-set associative, have a short access time and reside on the CPU chip. The second-level TLBs, on the other hand, are large, direct mapped, and reside in otherwise unused portions of the cache tag RAMs of the instruction and data cache sub-systems. As a result of this arrangement, performance may be improved without limiting the amount of available cache memory for a given implementation. Even if higher capacity memory devices are required for implementing the second-level TLBs in the cache tag RAMs in accordance with the invention, a significant savings over the cost of two sets of smaller devices would still result.