HP DV4 manual System interrupt specifications, Hardware IRQ System function

		Specifications
System interrupt specifications
	Hardware IRQ	System function
	IRQ1	Standard 101/102-key keyboard or Microsoft Natural PS/2 Keyboard with HP
	IRQ4	ENE CIR Receiver
	IRQ12	Alps Pointing-device(2-way) for 14-In Wide LCD
	IRQ13	Numeric data processor
	IRQ16	High Definition Audio Controller
	IRQ16	PCI standard PCI-to-PCI bridge
	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	Broadcom 4322AG 802.11a/b/g/draft-n Wi-Fi 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
	IRQ23	HP Mobile Data Protection Sensor
	IRQ81-190	Microsoft ACPI-Compliant System

Maintenance and Service Guide 6–7