Technique for supporting semi-compliant PCI devices behind a PCI

Details Technique for supporting semi-compliant PCI devices behind a PCI Technique for supporting semi-compliant PCI devices behind a PCI

1996-01-23

1998-08-04

Sheikh, Ayaz R.

395309, G06F 1340

Patent

active

057908141

ABSTRACT:
Method and apparatus for detecting the presence of a semi-compliant PCI device in a secondary expansion slot of a PC and instructing the user to reinsert the device into one of the primary slots are disclosed. In one embodiment, upon detection of a semi-compliant PCI device in a secondary slot, a video image instructing the user to reinsert the device into one of the primary slots is displayed on a display of the PC. Operation remains suspended until the device is relocated to a primary slot. In a presently preferred embodiment, a hardware enhancement to a PCI-to-PCI bridge connecting a primary PCI bus to a secondary BCI bus enables the device to operate flawlessly on the secondary PCI bus, such that the user remains unaware of the otherwise undesirable situation.

REFERENCES:
patent: 5396602 (1995-03-01), Amini et al.
patent: 5448703 (1995-09-01), Amini et al.
patent: 5450551 (1995-09-01), Amini et al.
Swanke, John E., "BIOS Compression, Using PS/2 BIOS compression as a tool for DOS memory management", Programmer's Journal, May 1991.
"PCI to PCI Bridge Architecutre Specification", Revision 1.0, pp. 12-29, 48, Apr. 5, 1994.

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