3 interrupt request (irq) lines, 1 pic mode, Pic mode – ADLINK ETX-BT User Manual

Page 44

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Page 44

8.3 Interrupt Request (IRQ) Lines

8.3.1

PIC Mode

IRQ#

Typical Interrupt Resource

Connected to Pin

Available

0 Counter

0

N/A

No

1

Keyboard controller

IRQ1 via SERIRQ / PIRQ

No

2

Cascade interrupt from slave PIC

N/A

No

3

Serial Port 2 (COM2)

IRQ3 via SERIRQ / PIRQ

Note (1)

4

Serial Port 1 (COM1)

IRQ4 via SERIRQ / PIRQ

Note (1)

5

Parallel Port (LPT)

IRQ5 via SERIRQ / PIRQ

Note (1)

6

Generic

IRQ6 via SERIRQ / PIRQ

Note (1)

7

Generic

IRQ7 via SERIRQ / PIRQ

Note (1)

8 Real-time

clock

N/A

No

9

Generic

IRQ9 via SERIRQ / PIRQ

Note (1)

10

Generic

IRQ10 via SERIRQ / PIRQ

Note (1)

11

Generic

IRQ11 via SERIRQ / PIRQ

Note (1)

12

PS/2 Mouse

IRQ12 via SERIRQ / PIRQ

Note (1)

13 Math

Processor

N/A

No

14

Primary IDE controller

IRQ14 via SERIRQ / PIRQ

Note (1)

15

Secondary IDE controller

IRQ15 via SERIRQ / PIRQ

Note (1)


Note (1):
These IRQs can be used for PCI devices when onboard device is disabled.

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