HP 900 - Software System Resources

Specifications and Regulatory Information
Software System Resources
Reference Guide 131
Software System Resources
The tables in this section show typical default 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.
To see other, non-default possibilities, refer to the BIOS Setup utility, which lists port
and audio device configurations in the Input/Output menu.
System Interrupts
0 System timer
1 Keyboard
2 Cascade IRQ 9
3 Free (or COM2 infrared port, if enabled)
4 COM1 (serial port)
5 Audio
6 Floppy drive
7 LPT1 (ECP parallel port)
8 Real-time clock
9 Video Controller (unmarked models*)
Free (“900 B” models*)
10 USB and CardBus - assigned by Windows driver
Video Controller (“900 B” models*)
11 Free
12 Pointing device
13 Numeric data processor
14 Internal hard disk (primary IDE controller)
15 Internal CD-ROM drive (secondary IDE controller)
* Unmarked models have no “900” after the serial number, “900 B” models have
“900 B” after the serial number.