HP DV4 System I/O address specifications, Address hex System function shipping configuration

Specifications

System I/O address specifications

I/O address (hex)		System function (shipping configuration)
000	- 00F	Direct memory access controller
010 - 01F		Motherboard resources
020	- 021	Programmable interrupt controller
02E - 02F		Motherboard resources
040	- 043	System timer
060	- 060	Standard 101/102-key keyboard or Microsoft Natural PS/2 Keyboard with HP
061	- 061	System speaker
062	- 062	Microsoft ACPI-Compliant Embedded controller
064	- 064	Standard 101/102-key keyboard or Microsoft Natural PS/2 Keyboard with HP
066	- 066	Microsoft ACPI-Compliant Embedded controller
068	- 068	Standard 101/102-key keyboard or Microsoft Natural PS/2 Keyboard with HP
06C - 06C		Standard 101/102-key keyboard or Microsoft Natural PS/2 Keyboard with HP
070	- 071	System CMOS/real time clock
072	- 073	Motherboard resources
080	- 080	Motherboard resources
081	- 08F	Direct memory access controller
092	- 092	Motherboard resources
0A0 - 0A1		Programmable interrupt controller
0B0 - 0B1		Motherboard resources
0C0 - 0DF		Direct memory access controller
0F0 - 0FE		Numeric data processor
3B0 -3BB		PCI standard PCI-to-PCI bridge
3C0 - 3DF		PCI standard PCI-to-PCI bridge
400	- 4CF	Motherboard resources
4D0 - 4D1		Motherboard resources
4D6 - 4D6		Motherboard resources
77A - 77A		Motherboard resources
C00 - C01		Motherboard resources
C14 - C14		Motherboard resources
C50 - C52		Motherboard resources
C6C - C6C		Motherboard resources
C6F - C6F		Motherboard resources
CD0 - CDB		Motherboard resources
2000 - 20FF		Realtek PCIe Fe Family Controller
2000 - 2FFF		PCI standard PCI-to-PCI bridge
3000 - 6FFF		PCI standard PCI-to-PCI bridge

(Continued)

6–8 Maintenance and Service Guide