Length decode to detect one-byte prefixes and branch
US6496923B1 · kind B1 · utility
43Cited by
6References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 17, 1999 |
| Grant date | Dec 17, 2002 |
| Priority date | — |
| Expiry date | Dec 17, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3816
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention provides a system and method which can be used for pre-decoding one-byte instruction prefixes and branch instruction indicators. A static line detect generates a number of instruction indicators. Further, a prefix and branch decode unit combines at least two of the number of instruction indicators, and a pre-decode unit decodes the combined instruction indicators. Embodiments of the invention decode one byte prefixes without additional cycle penalty and generate one and two byte branch indications early.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.