Microprogrammed information processing system having self-checking function
US4355389A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 25, 1980 |
| Grant date | Oct 19, 1982 |
| Priority date | — |
| Expiry date | Jan 25, 2000 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F11/2268
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An information processing system of the microprogram control type having a control storage is provided with an exclusive memory unit for storing only the address information of a microprogram stored in the control storage and an exclusive control circuit for reading a specific microprogram out of the control storage by the address information from the exclusive memory unit and executing the program read out. The exclusive control circuit operates when the information processing unit is an idle state to execute successively the micro-steps of the specified microprogram read out in accordance with the address information in the exclusive memory unit, thereby to verify the information processing unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.