IRQ holder for PCI steering

Updated: 09/12/2023 by Computer Hope

PCI IRQ steering is a feature created to fix problems with interrupt sharing between PCI (peripheral component interconnect) cards on computers. It was first supported in Windows with the introduction of Windows 95 OSR (OEM service release) 2.5 running under a BIOS (Basic Input/Output System) that also supported PCI IRQ (interrupt request) Steering. When enabled, PCI IRQ Steering allows two or more PCI cards to use the same interrupt by dynamically mapping the device's interrupt using PnP.

IRQ Steering in Windows Device Manager

IRQ holder for PCI steering is an error found in the Windows Device Manager if Microsoft Windows is installed with PnP (plug and play) disabled. If this error is seen in the Device Manager, ensure PnP is enabled in the BIOS setup.

IRQ, Operating system terms