HP CQ40-408AU, CQ40-416TU, CQ40-417TU, CQ40-404AX, CQ40-421AX manual System I/O address specifications

System I/O address specifications

I/O address (hex)	System function (shipping configuration)
000 – 01F	Direct memory access controller
020 – 021	Programmable interrupt controller
024 – 025	Programmable interrupt controller
028 – 029	Programmable interrupt controller
02C – 03D	Programmable interrupt controller
02E – 02F	Motherboard resources
030 – 031	Programmable interrupt controller
034 – 035	Programmable interrupt controller
038 – 039	Programmable interrupt controller
03C – 03D	Programmable interrupt controller
040 – 043	System timer
04E – 04F	Motherboard resources
050 – 053	System timer
060 – 060	Standard 101-/102-Key or Microsoft Natural Keyboard
061 – 061	Motherboard resources
062 – 062	Microsoft ACPI-Compliant Embedded Controller
063 – 063	Motherboard resources
064 – 064	Standard 101-/102-Key or Microsoft Natural Keyboard
065 – 065	Motherboard resources
066 – 066	Microsoft ACPI-Compliant Embedded Controller
067 – 067	Motherboard resources
070 – 070	Motherboard resources
070 – 077	System CMOS/real time clock
080 – 080	Motherboard resources
081 – 091	Direct memory access controller
092 – 092	Motherboard resources
093 – 09F	Direct memory access controller
0A0 – 0A1	Programmable interrupt controller
0A4 – 0A5	Programmable interrupt controller
0A8 – 0A9	Programmable interrupt controller
0AC – 0AD	Programmable interrupt controller
0B0 – 0B1	Programmable interrupt controller
0B2 – 0B3	Motherboard resources

96 Chapter 6 Specifications