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Specifications
Maintenance and Service Guide 6–7
System interrupt specifications (for models with UMA graphics subsystems)
Hardware IRQ System function
IRQ1 Standard 101/102-key keyboard or Microsoft Natural PS/2 Keyboard with HP
IRQ12 PS/2 Compatible Mouse
IRQ13 Numeric data processor
IRQ16 High Definition Audio Controller
IRQ16 Standard OpenHCD USB Host Controller
IRQ16 Standard OpenHCD USB Host Controller
IRQ17 PCI standard PCI-to-PCI bridge
IRQ17 Standard Enhanced PCI to USB Host Controller
IRQ18 Atheros AR5009 802.11a/g/n WiFi Adapter
IRQ18 PCI standard PCI-to-PCI bridge
IRQ18 Standard OpenHCD USB Host Controller
IRQ18 Standard OpenHCD USB Host Controller
IRQ19 High Definition Audio Controller
IRQ19 PCI standard PCI-to-PCI bridge
IRQ19 Realtek PCIe FE Family Controller
IRQ19 Standard Enhanced PCI to USB Host Controller
IRQ22 Standard AHCI 1.0 Serial ATA Controller
IRQ81-190 Microsoft ACPI-Compliant System