Information handling system including a direct access set associative cache and method for accessing same
US5897651A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 1995 |
| Grant date | Apr 27, 1999 |
| Priority date | — |
| Expiry date | Nov 13, 2015 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2212/6082
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information handling system includes a cache memory architecture which includes a means for performing a direct lookup by identifying the double word in the cache using the congruence class ID field, a set ID field and a double word ID field of the request address, and sending the double word to the CPU, and if the tag of the identified double word does not match the tag of the request address, sending a cancel signal to the CPU, and the double word with a matched tag in the congruence class, and if no match occurs, reloading the line l1 into the improved cache from a lower level cache or from main memory. The line in the set identified by the set ID field replaces the least recently used line in the congruence class and its place is taken by the missing line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.