I/O Interrupt sequencing for real time and burst mode devices
US4275440A · kind A · utility
37Cited by
8References
4Claims
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Key dates
| Filing date | Oct 2, 1978 |
| Grant date | Jun 23, 1981 |
| Priority date | — |
| Expiry date | Oct 2, 1998 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/34
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An improved I/O interrupt sequencing method and apparatus including generation of an instruction priority request signal to indicate that a real time task requires programmed I/O service. Generating an end of chain signal to suspend burst I/O control of the I/O bus and allow programmed I/O service to a real time device, and resetting the instruction priority request signal to allow burst mode data transfer to continue at the count positions at which it was suspended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.