Branch advanced control apparatus for advanced control of a branch instruction in a data processing system
US4827402A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 22, 1986 |
| Grant date | May 2, 1989 |
| Priority date | — |
| Expiry date | Apr 22, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/3804
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In the pipeline data processing system, a branch instruction is preliminarily detected from a string of instructions to be executed before execution thereof and the branch address is calculated. When the branch address is thereafter changed due to a change in the content of the register used to calculate the branch address, the calculated branch address is invalidated and a new branch address is calculated and the branch is executed. The change of the branch address is checked and performed on a basis of the comparison between the fields used for address calculation and the field of the address into which the data is to be written.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.