Microcode control apparatus
US4771377A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1985 |
| Grant date | Sep 13, 1988 |
| Priority date | — |
| Expiry date | Nov 15, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/223
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Apparatus and method is disclosed for controlling the timing of the addressing, fetching and executing of microinstructions in a data processing system such that delayed sequencing microinstructions, stretched delayed sequencing microinstructions and immediate sequencing microinstructions may be intermixed in the microinstruction stream. Circuitry is provided to determine the type of sequencing specified for each microinstruction and control the generation of the execution cycle signal and the microinstruction address clocking signal such that these signals occur in the appropriate time sequence to accomplish the specified sequencing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.