Interrupt sharing system assigning each interrupt request signal

Details Interrupt sharing system assigning each interrupt request signal Interrupt sharing system assigning each interrupt request signal

1998-07-21

2000-10-31

Lee, Thomas C.

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral configuration

710 8, 710 16, 710104, G06F 1310

Patent

active

061417033

ABSTRACT:
A mechanism that automatically configures the manner in which interrupt signals are shared in order to avoid system failures and improves the system performance is herein disclosed. The mechanism executes as part of the system BIOS during system initialization or reset. The mechanism utilizes information found in the configuration register space to determine the characteristics of the device. The device characteristics are used to determine which devices share IRQ signals. In this manner, devices that cause system failures due to sharing interrupt signals are not assigned a common interrupt signal thereby minimizing system failures and improving the overall system performance.

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MindShare, Inc. by Tom Shanley/Don Anderson, "PCI System Architecture" Third Edition, covers PCI Revision 2.1--Chapter 11 "Interrupt-Related Issues", pp. 209-230 (1997).

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