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1-20 Chapter 1: Product introduction
IRQ assignments for this motherboard
A B C D
PCI slot 1 used – – –
PCI slot 2 – used – –
IEEE1394 – – used –
* These IRQs are usually available for ISA or PCI devices.
When using PCI cards on shared slots, ensure that the drivers support “Share
IRQ” or that the cards do not need IRQ assignments; otherwise, conicts will
arise between the two PCI groups, making the system unstable and the card
inoperable.
Interrupt assignments
IRQ Standard function
0 High precision event timer
1 Standard 101/102-Key or Microsoft Natural PS/2 keyboard
4 Communications Port (COM1)*
6 Standard oppy disk controller
8 High precision event timer
9 Microsoft ACPI-Compliant System
12 PS/2 Compatible Mouse
13 Numeric data processor
16 Microsoft UAA Bus Driver for High Denition Audio
16 Standard OpenHCD USB Host Controller
17 Standard OpenHCD USB Host Controller
17 Standard OpenHCD USB Host Controller
18 ATI Radeon Xpress 1200 Series
18 Standard OpenHCD USB Host Controller
18 Standard OpenHCD USB Host Controller
19 Realtek RTL8168/8111 PCI-E Gigabit Ethernet NIC
19 Standard Enhanced PCI to USB Host Controller
22 Standard Dual Channel PCI IDE Controller
22 VIA OHCI Compliant IEEE1394 Host Controller