Compaq Presario CQ40-400 - Notebook PC - 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