HP OmniBook 800 Notebook PC - Manual (Page 55)

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System Resources
Below are default values for system resources. To see other, non-default
possibilities, use the
System Configuration Utility, which lists port and audio device
configurations in the Input/Output menu.
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.
Interrupts (IRQs)
0 System timer
1 Keyboard
2 programmable interrupt controller
3 Free (COM2 or COM4 if modem installed)
4 COM1 (external serial port)
5 ESS sound chip
6 Floppy-disk drive
7 LPT1 (external parallel port)
8 Real-time clock
9 Free
10 IrDA (infrared) and SCSI
11 Free
12 Pointing device
13 Math co-processor
14 Hard disk
15 Docking/PCI slot
A PC Card's IRQ depends on the card.
DMA Channels
0 Free
1 Sound
2 Floppy-disk drive
3 Free
4 DMA controller
5 Wave 2
6 Free