Data transfer system
US4231084A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 8, 1977 |
| Grant date | Oct 28, 1980 |
| Priority date | — |
| Expiry date | Dec 8, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4217
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
There is provided a data transfer system for use in a data processing system. The data processing system comprises a central processor for processing information in accordance with an instruction stored in a main memory equipment, a peripheral equipment operable by receiving the instruction from the central processor and transmitting to the central processor a control information which requires the central processor to effect successive controlling operation, and an address bus, data bus and execution bus connecting the central processor to the peripheral equipment. When transferring data from the central processor to the peripheral equipment, the operating sequence procedure of the central processor is changed in accordance with the content on the status bus through which the control information from the peripheral equipment is transmitted to the central processor, whereby a sequence commensurate with the status of the peripheral equipment in operation is effected within the same instruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.