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Irq mapping table – Nortel Networks CALLPILOT 555-7101-217 User Manual

Page 17

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May 2003

1001rp server description

Part 2: 1001rp Server Hardware Installation

17

IRQ mapping table

Introduction

The following table displays the assignments for each Interrupt Request
Line (IRQ) with the associated slot or device. You do not need this
information for installation, but you may need it for troubleshooting.

Note: IRQs 9, 10, 11, and 15 are assigned to system PCI slots rather than to
specific devices.

IRQ

Slot or device

0

Timer

1

Keyboard

2

System / Unused

3

Serial port 2 (COM2)

4

Serial port 1 (COM1)

5

Available

6

Floppy controller

7

Parallel port (LPT1)

8

Real Time Clock

9

Assigned to slots 9, 15, and 20

10

Assigned to slots 10, 13, and 19

11

Assigned to slots 11, 14, and 17

12

PS/2 mouse

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