Apparatus for selecting a user programmable address for an I/O device
US5748982A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 1996 |
| Grant date | May 5, 1998 |
| Priority date | — |
| Expiry date | Mar 15, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/4068
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Manual insertion of hardware jumpers to configure I/O device selection and addressing is eliminated through the implementation of specialized hardware which allows for program control over several addressing paths. A register file is utilized within a programmable device to configure demultiplexers and multiplexers which map I/O address control line signals to set up various communication paths for address I/O exchanges. I/O configuration is entirely removed from add-on cards through the use of the programmable device. Accordingly, such add-on cards only require minimum circuitry, thus facilitating the use of miniature or baby cards as option cards which are much smaller than standard add-on cards.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.