1-20 Chapter 1: Product introduction
* These IRQs are usually available for ISA or PCI devices.
Interrupt assignments
IRQ Standard function
1 Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
2 High precision event timer
4 Communications Port (COM1)
6 Standard oppy disk controller
8 High precision event timer
9 Microsoft ACPI-Compliant System
13 Numeric data processor
11 NVIDIA nForce PCI System Management
17 PCI standard PCI-to-PCI bridge
18 PCI standard PCI-to-PCI bridge
20 NVIDIA GeForce 8200
20 Standard Enhanced PCI to USB Host Controller
21 NVIDIA nForce System Management Controller
21 Standard Enhanced PCI to USB Host controller
22 Standard OpenHCD USB Host Controller
22 Standard OpenHCD USB Host Controller
23 Microsoft UAA Bus Driver for High Denition Audio
23 NVIDIA Network Bus Enumerator
23 Standard Dual Channel PCI IDE Controller
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