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BIOS Setup
· 58 ·
W21 SERIES
Interrupt No.
Device Description
IRQ0 System
timer
IRQ1
PS/2 standard keyboard
IRQ2 Reserved
IRQ3 COM2
IRQ4 COM1
IRQ5 Reserved
IRQ6 Reserved
IRQ7 Reserved
IRQ8
System CMOS/read time clock
IRQ9 Reserved
IRQ10 Reserved
IRQ11
PCI data acquisition and signal processing controller
IRQ12 Microsoft
PS/2
Mouse
IRQ13
Numeric data processor
IRQ14 Motherboard
resources
IRQ15 Reserved
AP
Advanced programmable interrupt controller. Most motherboards above P4
pport APIC and provide more than 16 interrupt sources, like IRQ16 -
IC
level su
IRQ23; while some others can have up to 28 interrupt sources, such as
motherboard supporting PCI-X. However, relevant OS are required to enable
that function.