Microsequencer for a data processing system using a unique trap handling technique
US4742449A · kind A · utility
6Cited by
9References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 21, 1985 |
| Grant date | May 3, 1988 |
| Priority date | — |
| Expiry date | Oct 21, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/0793
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A data processing system in which macroinstructions are decoded to provide a sequence of microinstructions comprising one or more microroutines. If a fault condition occurs, the currently executing microinstruction of a sequence thereof is interrupted, while the fault is being handled. When the fault has been resolved, execution of the interrupted microinstruction resumes. If the fault cannot be resolved the sequence of microinstructions is permanently aborted. The process of interrupting the sequence and resuming operation at the interrupted microinstruction is essentially invisible to the microprogram.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.