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