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Appendix
0x000001CE-0x000001CF
VgaSave
0x000002E8-0x000002EF
VgaSave
Appendix B: Interrupt Request Lines (IRQ)
Peripheral devices use interrupt request lines to notify CPU for the service
required. The following table shows the IRQ used by the devices on board.
Level
Function
IRQ 9
Microsoft ACPI-Compliant System
IRQ 16
PCI standard PCI-to-PCI bridge
IRQ 16
Standard Enhanced PCI to USB Host Controller
IRQ 16
PCI standard PCI-to-PCI bridge
IRQ 11
Video Controller (VGA Compatible)
IRQ 11
PCI PCI Simple Communications Controller
IRQ 5
Ethernet Controller
IRQ 5
SM Bus Controller
IRQ 22
Microsoft UAA Bus Driver for High Definition Audio
IRQ 23
Standard Enhanced PCI to USB Host Controller
IRQ 8
System CMOS/real time clock
IRQ 0
System timer
IRQ 1
Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
IRQ 12
Microsoft PS/2 Mouse
IRQ 4
Communications Port (COM1)
IRQ 3
Communications Port (COM2)
IRQ 13
Numeric data processor
IRQ 19
Standard Dual Channel PCI IDE Controller
IRQ 19
Standard Dual Channel PCI IDE Controller
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