Register device
US4945510A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 16, 1987 |
| Grant date | Jul 31, 1990 |
| Priority date | — |
| Expiry date | Dec 16, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/462
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A register device includes a register set group, a switching control unit, a write control unit, a write flag memory unit, and a read control unit. The register set group consists of a plurality of register sets each constituted by a plurality of registers. The switching control unit selects a register set to be used in processing from the register set group in response to a saving/recovery instruction. The write control unit writes data in registers of the register set selected by the switching control unit in response to a write instruction. A write flag representing whether data is written in each of the registers is held by the write flag memory unit. The read control unit determines, in response to a read instruction, a register in which data is written most recently of a plurality of registers corresponding to each other between the register sets with reference to the write flags, thereby reading out data from the register.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.