Interrupt steering circuit for PCI bus
US6115780A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 20, 1998 |
| Grant date | Sep 5, 2000 |
| Priority date | — |
| Expiry date | Oct 20, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F13/24
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In an interrupt steering circuit for a computer system having a PCI bus connected to four expansion slots, a controller includes a non-volatile memory previously storing a selection information of an initialization device select signal. Four selectors are provided to the four expansion slots, respectively. Each of the selectors is controlled by the controller on the basis of the selection information of the non-volatile memory for selecting one bit of an address/data bus of the PCI bus to supply the selected bit to a corresponding one of the "n" expansion slots. The non-volatile memory is rewritable in a software manner by the computer system, so that the device number of the devices connected to the expansion slots can be changed on the basis of the value set in the non-volatile memory.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.