Advantech som-4450 cpu system on module som-4450 etx User Manual

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SOM-4450 User's Manual

B.3

Interrupt assignments

Table B-3: Interrupt assignments

Interrupt#

Interrupt source

NMI

Parity error detected

IRQ 0

Interval timer

IRQ 1

Keyboard

IRQ 2

Interrupt from controller 2 (cascade)

IRQ 3

Serial communication port 2

IRQ 4

Serial communication port 1

IRQ 5

Available

IRQ 6

Diskette controller (FDC)

IRQ 7

Parallel port 1 (print port)

IRQ 8

Real-time clock

IRQ 9

Reserve

IRQ 10

Available

IRQ 11

Reserved for watchdog timer

IRQ 12

PS/2 mouse

IRQ 13

INT from co-processor

IRQ 14

Preliminary IDE

IRQ 15

Secondary IDE for CompactFlash

USB and Ethernet IRQ is automatically set by the system