Table 1-9. System Input/Output Addresses (100-3FF) 170-177 Internal CD-ROM drive (secondary IDE controller) 1F0-1F7 Internal hard disk (primary IDE controller) 200-207 OmniBook 3000: Joystick 220-22F Crystal sound 376 Internal CD-ROM drive (secondary IDE controller) 378-37F LPT1 (printer port) 388-38B Sound 3B0-3BB VGA adapter 3C0-3DF VGA adapter 3E0-3E1 PCMCIA controller 3F0-3F5 Floppy controller 3F6 Internal hard disk (primary IDE controller) 3F7 Floppy controller 3F8-3FF COM1 (serial port) Table 1-10. DMA Channels 0 Sound record 1 Sound playback 2 Floppy drive 3 LPT1 (ECP parallel port) 4 Cascade 5 Free 6 Free 7 Free HP OmniBook 2100/3000/3100 Product Information 1-9