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Software System Resources
6-4
Software System Resources
Below are default values for the system resources. To see other, non-default
possibilities, refer to the System Configuration Utility, which lists port and audio
device configurations in the Input/Output menu.
System Resources
The tables in this section show typical resource usage as set up by the OmniBook
BIOS. Plug-and-play operating systems, drivers, and SCU settings may change some
of the entries.
System Interrupts
0
System timer
1
Keyboard
2
Redirect IRQ 9
3
COM2 and COM4 (undocked) / Free (docked)
4
COM1 and COM3 (serial port)
5
Crystal sound
6
Floppy disk drive
7
LPT1 (parallel port)
8
Real-time clock
9
MIDI
10
PCI-type interrupt: CardBus (undocked) / SCSI (docked)
11
Free
12
Mouse
13
Coprocessor
14
Internal hard disk (primary IDE controller)
15
Internal CD-ROM (secondary IDE controller)
System Memory
C0000-CAFFF
Chips & Technologies video BIOS
CB000-CBFFF
Enhanced parallel port BIOS
CC000-E7FFF
Free (see below)
E8000-FFFFF
Plug-and play, PCI, and system BIOS
Valid uses for memory addresses CC000-E7FFF:
• Upper memory blocks (UMBs) in the range CC000-E7FFF.
• PC card and ISA/PCI card memory windows in the range CC000-DFFFF.
• ISA/PCI card boot ROM in the range CE000-DFFFF.