HP OmniBook XE3 Reference Manual page 130

Specifications and Regulatory Information
Hardware and Software Specifications
System Input/Output Addresses (100-3FF)
170-177 Internal CD-ROM drive (secondary IDE controller)
1F0-1F7 Internal hard disk drive (primary IDE controller)
220-22F DOS games (FM decoding)
376 Internal CD-ROM drive (secondary IDE controller)
378-37F LPT1 (printer port)
388-38B DOS games (FM decoding)
3B0-3BB VGA adapter
3C0-3DF VGA adapter
3E0-3E1 PCMCIA controller
3F0-3F5 Floppy disk drive controller
3F6 Internal hard disk drive (primary IDE controller)
3F7 Floppy disk drive controller
3F8-3FF COM1 (serial port)
DMA Channels
0 Free
1 LPT1 (ECP parallel port)
2 Floppy disk drive
3 Free
4 Cascade from secondary DMA controller
5 Free
6 Free
7 Free
130 Reference Guide