Associative scalar data cache with write-through capabilities for a vector processor
US5717895A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 1, 1994 |
| Grant date | Feb 10, 1998 |
| Priority date | — |
| Expiry date | Dec 1, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F12/0888
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Method and apparatus for a scalar data cache in a scalar/vector supercomputer. The scalar data cache comprises a cache array and a cache controller. The cache array comprises a plurality of cache frames; each cache frame comprises a plurality of cache lines; and each cache line comprises a plurality of data words. The cache controller performs a broadside compare of the reference address against all addresses held in the cache, and translates the reference address into a cache-array address. For each cache line, there is a corresponding cache-line validity indication which is set "valid" only when every data word in the cache line contains valid data. A cache-line validity comparator operates to provide a cache-line-hit indication if a data word requested is in a valid cache line. A cache-load controller is described for loading data from a common memory into every data word of a cache line and for marking the cache line "valid". For at least one of the plurality of scalar registers, a cache accessor is described for providing fetch access to the data words in the cache array, and for providing write-through-cache capability to the data words in the cache array.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.