Interruptable microprogram controller for microcomputer systems
US4438492A · kind A · utility
61Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1980 |
| Grant date | Mar 20, 1984 |
| Priority date | — |
| Expiry date | Aug 1, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/268
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A microprogram controller, in a microcomputer system used as an address sequencer intended for controlling the sequence of execution of microinstructions in a microprogram memory, is presented. The microprogram controller includes architecture that provides the capability to asynchronously receive indications of an event, break from the microinstruction sequence in response, branch to control of subroutine consisting of a predetermined microinstruction sequence directed to responding to the event, and returning to the interrupted sequence upon completion of the subroutine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.