Interrupt steering circuit for PCI bus

Details Interrupt steering circuit for PCI bus Interrupt steering circuit for PCI bus

1998-10-20

2000-09-05

Ray, Gopal C.

Electrical computers and digital data processing systems: input/

Interrupt processing

Programmable interrupt processing

710260, G06F 948, G06F 1314

Patent

active

061157805

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.

REFERENCES:
patent: 4930070 (1990-05-01), Yonekura et al.
patent: 4933846 (1990-06-01), Humphrey
patent: 5473757 (1995-12-01), Sexton
patent: 5673400 (1997-09-01), Kenny
patent: 5752043 (1998-05-01), Suzuki

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