Method and apparatus for writing information to registers in a data processing system using a number of registers for processing instructions
US5805906A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 15, 1996 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Oct 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3861
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a data processing system using a number of registers for processing instructions, a method and apparatus for writing information to the registers. Ports are accessed for writing back to processor registers, information ("results") resulting from and associated with executing instructions. Certain of the results are stored for restoring to the registers. In response to an interruption at least one of the ports is accessed for restoring stored results to the registers. Accesses to the ports are arbitrated in response to comparing writeback and restoration results. A result includes identification of the instruction the result is associated with (a "TID"), and a register that is targeted by the result (a "TR"). The comparing includes comparing TID's and TR's for the results.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.