Interrupt expander circuit
US4275458A · kind A · utility
44Cited by
4References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 14, 1979 |
| Grant date | Jun 23, 1981 |
| Priority date | — |
| Expiry date | Dec 14, 1999 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/26
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An interrupt expander circuit provides for greatly enlarging the capacity of vectored interrupts in a microprocessor system. This circuit provides the capability for a very large number of peripheral devices to be connected to a microprocessor centeral processing unit via an interrupt structure while maintaining the same interface requirements between the interrupting peripheral devices and the microprocessor. This circuit provides a priority interrupt structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.