Specifications and Regulatory Information
Hardware and Software Specifications
Reference Guide 129
Software system resources
The tables in this section show typical resource usage as set up by the HP notebook
BIOS. Plug-and-play operating systems, drivers, and BIOS setup settings may change
some of the entries. To see other, nondefault possibilities, refer to the BIOS Setup utility,
which lists port configurations in the System Devices menu.
System Interrupts
0 System timer
1 Keyboard
2 Cascade from secondary interrupt controller
3Free
4 COM1 (serial port)
5 Audio
6 Floppy disk drive
7 LPT1 (ECP parallel port)
8 Real-time clock
9SCI
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)
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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