Trap mechanism for a data processing system
US4074353A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 24, 1976 |
| Grant date | Feb 14, 1978 |
| Priority date | — |
| Expiry date | May 24, 1996 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/462
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A plurality of trap save areas are linked to form a pool of such areas from which an area may be loaded with context from various sources in response to a trap condition, such as the addressing of unuseable memory, the loaded area unlinked from the pool, and various pointers changed to reflect such unlinking. The unlinked area is associated with the process which was executing at the time of the occurrence of the trap condition by effectively being coupled to the interrupt level of such process. Independent of the interrupt level, a trap handler routine, specific to the nature of the trap condition, is executed following which the unlinked area is returned to the pool and the various pointers changed to reflect such return.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.