1-8 Product Information HP OmniBook XE2
System Resources
Below are default values for system resources. To see other, non-default possibilities, use the BIOS
Setup utility (see page 3-22), 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 1-5. System Interrupts
0 System timer
1 Keyboard
2 Cascade from secondary interrupt controller
3 Free (or COM2, IrDA port, if enabled)
4 COM1 (serial port)
5 Audio
6 Floppy disk drive
7 LPT1 (ECP parallel port)
8 Real-time clock
9 Free in APM mode (SCI in ACPI mode)
10 PCI IRQ (shared by all PCI devices)
11 Free (or MIDI, if enabled).
12 Touch pad, PS/2 mouse
13 Numeric coprocessor
14 Internal hard disk drive (primary IDE controller)
15 Internal CD-ROM drive (secondary IDE controller)
Table 1-6. System Memory
00000 - 9FFFF System memory
A0000 – BFFFF Video
C0000 - CFFFF Video BIOS
D0000 - DBFFF Free (valid uses: upper memory blocks (UMBs) or PC Card
memory windows)
DC000 - FFFFF System BIOS
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