Microprogram control unit having multiway branch
US4907192A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 10, 1986 |
| Grant date | Mar 6, 1990 |
| Priority date | — |
| Expiry date | Nov 10, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F9/264
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A microprogram control unit is provided for processing conditional branch micro-instructions stored in a micro-instruction memory to control the function of an information processing apparatus. The unit includes a microprogram counter coupled to the micro-instruction memory and contains an address for accessing the micro-instruction stored in the memory. A circuit is provided for registering the micro-instruction received from the micro-instruction memory and having an address field coupled to the microprogram counter and a condition field for designating a condition to be judged. A detecting circuit is coupled to the registering circuits to receive the micro-instruction therefrom and for detecting the conditional branch micro-instruction. Further, there is provided a circuit for generating status signals representing respectively a plurality of the status of the information processing apparatus and selectively outputting anyone of the status signals. There is also provided a circuit for judging the coincidence between the status signal selectively outputted from the status signal generating circuit and the condition designated by the content of the condition field of the micro-ins…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.