Identifying System Resources - HP OmniBook 800 Evaluator Manual

Identifying System Resources

These default values offer maximum utility for most users; however, alternate
configurations exist in the System Configuration Utility, which lists port and audio
device configurations in the Input/Output menu. The tables in this section show
initial resource usage. Plug-and-play operating systems, drivers, and the SCU, may
change some entries.
Note See the Installation and Setup Guide for more information about using the System
Configuration Utility (SCU).
System Interrupts
0
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
System Memory
C0000 -C7FFF
C8000 -E7FFF
E8000 -FFFFF
Valid uses for memory addresses C8000-E7FFF:
System timer
Keyboard
Redirect IRQ 9
FREE
COM1 (serial port) and COM3
ESS sound
Disk drive
LPT1 (parallel port)
Real-time clock
FREE
Infrared (undocked), and SCSI (docked)
FREE
Mouse
Coprocessor
Internal hard disk drive
FREE
NeoMagic video BIOS
Free (see below)
Plug-and play, PCI, and system BIOS
Upper memory blocks (UMBs) in the range C8000-E7FFF.
PC card and ISA/PCI card memory windows in the range CC000-DFFFF.
ISA/PCI card boot ROM in the range CE000-DFFFF.
Introduction
Identifying System Resources
1-15