Programmed allocation of computer memory workspace
US4025904A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 8, 1975 |
| Grant date | May 24, 1977 |
| Priority date | — |
| Expiry date | Sep 8, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/461
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
The invention relates to context switching wherein the memory address of the workspace of a problem program is stored in the memory workspace of an interrupt program. In a more specific aspect, workspace in memory stores a problem program workspace pointer, program counter contents and contents of a status register upon occurrence of an interrupt. The location of a workspace in main computer memory is referenced by the contents of a workspace pointer register. Upon occurrence of an interrupt, the contents of the register are stored in one element of a new workspace in main memory while referencing the new workspace by loading new contents into the workspace pointer register.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.