3 interrupt request (irq) lines, Interrupt request (irq) lines, Pic mode – ADLINK ETX-CV User Manual

Page 34: Apic mode

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ETX-CV User’s Manual

Page 34

7.3 Interrupt Request (IRQ) Lines

PIC Mode

IRQ#

Typical Interrupt Resource

Connected to Pin

Available

0

Counter 0

N/A

No

1

Keyboard controller

N/A

No

2

Cascade interrupt from slave PIC

N/A

No

3

Serial Port 2 (COM2) / PCI

IRQ3 via SERIRQ

Note (1)

4

Serial Port 1 (COM1) / PCI

IRQ4 via SERIRQ

Note (1)

5

Parallel Port 2 (LPT2) / PCI

IRQ5 via SERIRQ

Note (1)

6

Floppy Drive Controller

IRQ6 via SERIRQ

No

7

Parallel Port 1 (LPT1) / PCI

IRQ7 via SERIRQ,

Note (1)

8

Real-time clock

N/A

No

9

SCI / PCI

IRQ9 via SERIRQ

Note (1)

10

PCI

IRQ10 via SERIRQ

Note (1)

11

PCI

IRQ11 via SERIRQ

Note (1)

12

PS/2 Mouse / PCI

IRQ12 via SERIRQ

Note (1)

13

Math Processor

N/A

No

14

Primary IDE controller / PCI

IRQ14 via SERIRQ

Note (1)

15

Secondary IDE controller / PCI

IRQ15 via SERIRQ

Note (1)

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

APIC Mode

IRQ#

Typical Interrupt Resource

Connected to Pin

Available

0

Counter 0

N/A

No

1

Keyboard controller

N/A

No

2

Cascade interrupt from slave PIC

N/A

No

3

Serial Port 2 (COM2) / PC

IRQ3 via SERIRQ

Note (1)

4

Serial Port 1 (COM1) / PCI

IRQ4 via SERIRQ

Note (1)

5

Parallel Port 2 (LPT2) / PCI

IRQ5 via SERIRQ

Note (1)

6

Floppy Drive Controller

IRQ6 via SERIRQ

No

7

Parallel Port 1 (LPT1) / PCI / ISA

IRQ7 via SERIRQ

Note (1)

8

Real-time clock

N/A

No

9

SCI / PCI

IRQ9 via SERIRQ

Note (1),

10

PCI

IRQ10 via SERIRQ

Note (1)

11

PCI

IRQ11 via SERIRQ

Note (1)

12

PS/2 Mouse / PCI

IRQ12 via SERIRQ

Note (1)

13

Math Processor

N/A

No

14

Primary IDE controller / PCI

IRQ14 via SERIRQ

Note (1)

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