Centralized generation of data transfer acknowledge pulses for microprocessors
US4613936A · kind A · utility
9Cited by
9References
2Claims
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Assignee
Inventor
Key dates
| Filing date | Feb 25, 1983 |
| Grant date | Sep 23, 1986 |
| Priority date | — |
| Expiry date | Feb 25, 2003 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4239
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Centralized generation of data transfer acknowledgment (DTACK) pulses is provided instead of providing each of the devices with their own DTACK pulse generation facilities. In this centralized DTACK generator, a number of gating circuits are gated on at different intervals by sequential pulses from a delay circuit. Device access lines from the microprocessor address decoder are all fed to one of these gates. When there is concurrence of one of the sequential pulses and a device access pulse at the inputs of one of the gates, the gate places an acknowledgment pulse on the DTACK line.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.