System Resources

Below are default values for system resources. To see other, non-default possibilities, use the BIOS Setup utility (see page 3-23), which lists port and audio device configurations in the System Devices menu.

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

 

Table 1-7. System Interrupts

0

System timer

1

Keyboard

2

Cascade IRQ 9

3

Free (or COM2 infrared port, if enabled)

4

COM1 (serial port)

5

Crystal sound

6

Floppy drive

7

LPT1 (ECP parallel port)

8

Real-time clock

9

Free

10

USB and CardBus - assigned by Windows driver

11

Free

12

Pointing device

13

Numeric data processor

14

Internal hard disk (primary IDE controller)

15

Internal CD-ROM drive (secondary IDE controller)

 

Table 1-8. System Memory

00000 - 9FFFF

System memory

A0000 - BFFFF

Video

C0000 - CBFFF

Video BIOS

CC000 - DBFFF*

Free**

DC000*- FFFFF

System BIOS

*Approximate boundary.

**Valid uses for memory addresses CC000-DBFFF: Upper memory blocks (UMBs).

PC card memory windows.

HP OmniBook 4100

Product Information

1-7