Interrupt channel assignments (irqs), Table 3-1, Interrupt channel (irqs) assignments (typical) – ADLINK ETX-PVR User Manual

Page 27

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Chapter 3

Hardware

ETX-PVR

Reference Manual

21

Interrupt Channel Assignments (IRQs)

The interrupt channel assignments are listed in

Table 3-1

.

Legend: D = Default, O = Optional, X = Fixed

Table 3-1. Interrupt Channel (IRQs) Assignments (Typical)

Device vs IRQ No.

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

Timer X
Keyboard

X

Secondary Cascade

X

COM1

O D

COM2

D O

Floppy

D

Parallel

O

D

RTC

X

IDE

D

Math Coprocessor

X

PS/2 Mouse

X

HD Audio CODEC

D

PCI INTA

Automatically Assigned

PCI INTB

Automatically Assigned

PCI INTC

Automatically Assigned

PCI INTD

Automatically Assigned

USB

Automatically Assigned

Video

Automatically Assigned

Ethernet

Automatically Assigned

NOTE

The IRQs for the Ethernet, Video, USB, and PCI are automatically assigned by
the BIOS Plug and Play logic. Local IRQs assigned during initialization can not
be used by external devices.

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