Microprocessor peripheral access control circuit
US4692895A · kind A · utility
10Cited by
7References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1983 |
| Grant date | Sep 8, 1987 |
| Priority date | — |
| Expiry date | Dec 23, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4243
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A microprocessor system is adapted to permit the accessing of peripheral devices that have slow data bus release times without acquisition conflicts by placing the microprocessor in the hold state after the data acquisition. Logic circuitry responsive to the hold state supplies control signals to the peripheral devices over the bus during the hold state. At the end of one hold state, normal operation is resumed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.