HP Presario CQ61-100 Compaq Presario CQ61 Notebook PC and HP G61 Notebook PC - - Page 99

System interrupt specifications, System I/O address specifications - cpu

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Specifications System interrupt specifications Hardware IRQ System function IRQ0 System timer IRQ1 Standard 101-/102-Key or Microsoft® Natural Keyboard IRQ2 Cascaded IRQ4 COM1 IRQ6 Diskette drive IRQ7* Parallel port IRQ8 System CMOS/real-time clock IRQ9* Microsoft ACPI-compliant system IRQ12 Synaptics PS/2 TouchPad IRQ13 Numeric data processor IRQ14 Primary IDE channel IRQ15 Secondary IDE channel *Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none. ✎ PC Cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15. Either the infrared or the serial port may assert IRQ3 or IRQ4. System I/O address specifications I/O address (hex) 000 - 00F 010 - 01F 020 - 021 022 - 024 025 - 03F 02E - 02F 040 - 05F 044 - 05F 060 061 062 - 063 064 065 - 06F 070 - 071 072 - 07F 080 - 08F 090 - 091 System function (shipping configuration) DMA controller no. 1 Unused Interrupt controller no. 1 Opti chipset configuration registers Unused 87334 "Super I/O" configuration for CPU Counter/timer registers Unused Keyboard controller Port B Unused Keyboard controller Unused NMI enable/RTC Unused DMA page registers Unused (Continued) 6-6 Maintenance and Service Guide

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6–6
Maintenance and Service Guide
Specifications
System interrupt specifications
System I/O address specifications
Hardware IRQ
System function
IRQ0
System timer
IRQ1
Standard 101-/102-Key or Microsoft
®
Natural Keyboard
IRQ2
Cascaded
IRQ4
COM1
IRQ6
Diskette drive
IRQ7*
Parallel port
IRQ8
System CMOS/real-time clock
IRQ9*
Microsoft ACPI-compliant system
IRQ12
Synaptics PS/2 TouchPad
IRQ13
Numeric data processor
IRQ14
Primary IDE channel
IRQ15
Secondary IDE channel
*Default configuration; audio possible configurations are IRQ5, IRQ7, IRQ9, IRQ10, or none.
✎
PC Cards may assert IRQ3, IRQ4, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11, or IRQ15. Either the infrared or the serial port
may assert IRQ3 or IRQ4.
I/O address (hex)
System function (shipping configuration)
000 - 00F
DMA controller no. 1
010 - 01F
Unused
020 - 021
Interrupt controller no. 1
022 - 024
Opti chipset configuration registers
025 - 03F
Unused
02E - 02F
87334 “Super I/O” configuration for CPU
040 - 05F
Counter/timer registers
044 - 05F
Unused
060
Keyboard controller
061
Port B
062 - 063
Unused
064
Keyboard controller
065 - 06F
Unused
070 - 071
NMI enable/RTC
072 - 07F
Unused
080 - 08F
DMA page registers
090 - 091
Unused
(Continued)