HP Presario CQ61-300 Compaq Presario CQ61 Notebook PC and HP G61 Notebook PC - - Page 99
System interrupt specifications, System I/O address specifications
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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