Appendix
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29
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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.
3
.2 Interrupt Request Lines (IRQ)
Level
Function
IRQ 0
System Timer
IRQ
Keyboard
IRQ 2
Cascaded with IRQ 9
IRQ 3
COM2
IRQ 4
COM
IRQ
AC’97
IRQ 6
Floppy Drive Controller
IRQ 7
LPT
IRQ 8
Real Time Clock
IRQ 9
USB, ACPI
IRQ 0
USB, VGA
IRQ
USB, LAN
IRQ 2
PS/2 mouse or Open
IRQ 3
Math Coprocessor
IRQ 4
Primary Hard Drive controller
IRQ
Secondary Hard Drive controller
Содержание 3308180
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Страница 11: ...Introduction...
Страница 14: ...Installation 11 2 Chapter 2 Installation Chapter 2 Installation...
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