
C.3 System IRQ and DMA Resource
C.3.1 IRQ
IRQ Number Device
0 System timer
1 Standard 101/102-Key or Microsoft Natural Keyboard
2 Programmable interrupt controller
3 Communications Port (COM2)
4 Communications Port (COM1)
5 Intel(R) 82801DB/DBM USB Universal Host Controller - 24C2
5 IRQ Holder for PCI Steering
5 Intel(R) 82845G/GL Graphics Controller
6 Standard Floppy Disk Controller
7 Printer Port (LPT1)
8 System CMOS/real time clock
9 Intel (R) USB Enhanced Host Controller (ICH4)
9 IRQ Holder for PCI Steering
10 Avance AC97 Audio
10 Intel(R) 82801DB/DBM SMBus Controller - 24C3
10 Intel(R) GD82559ER PCI Adapter
10 Intel(R) 82801DB/DBM USB Universal Host Controller - 24C4
10 IRQ Holder for PCI Steering
11 Intel(R) PRO/100 VE Network Connection
11 Intel(R) 82801DB/DBM USB Universal Host Controller - 24C7
11 IRQ Holder for PCI Steering
12 PS/2 Compatible Mouse Port
13 Numeric data processor
14 Primary IDE controller (dual fifo)
14 Intel(R) 82801DB Ultra ATA Storage Controller - 24CB
15 Secondary IDE controller (dual fifo)
15 Intel(R) 82801DB Ultra ATA Storage Controller - 24CB
FS-977 User’s Manual
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