HP BOOK XE3 manual System Resources, System Interrupts, System Memory

System Resources

The following tables list the default values for the notebook’s system resources. Use the BIOS Setup utility (see page 3-29) to view all available port and audio device configurations in the System Devices menu.

The tables in this section show typical resource usage as set up by the notebook’s BIOS. Plug-and- play operating systems, drivers, and BIOS Setup settings may change some of the entries.

Table 1-1. System Interrupts

0

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

System timer

Keyboard

Cascade from secondary interrupt controller

Free

COM1 (serial port)

Audio

Floppy disk drive

LPT1 (ECP parallel port)

Real-time clock

SCI

PCI IRQ (shared by all PCI devices)

Free (or MIDI if enabled)

Touch pad, PS/2 mouse

Numeric coprocessor

Internal hard disk drive (primary IDE controller)

Internal CD-ROM drive (secondary IDE controller)

00000–9FFFF

A0000–BFFFF

C0000–CFFFF

D0000–DBFFF

DC000–FFFF

Table 1-2. System Memory

System memory

Video

Video BIOS

Free: can be used for upper memory blocks (UMBs) or PC card memory windows

System BIOS

HP OmniBook XE3 Product Information 1-15