Table 1-9. System Input/Output Addresses (100-3FF) 120-127 Audio (OmniBook 900† only) 170-177 Internal CD-ROM drive (secondary IDE controller) 1F0-1F7 Internal hard disk (primary IDE controller) 220-22F Audio 376 Internal CD-ROM drive (secondary IDE controller) 378-37F LPT1 (printer port) 388-38B Audio 3B0-3BB Video adapter 3C0-3DF Video adapter 3E0-3E1 PCMCIA controller 3F0-3F5 Floppy controller 3F6 Internal hard disk (primary IDE controller) 3F7 Floppy controller 3F8-3FF COM1 (serial port) † Models called 900† in this manual have no marking in the serial number, whereas models called 900B have 900 B after the serial number. Table 1-10.
DMA Channels 0 Sound record (OmniBook 900† only) Free (OmniBook 900B only) 1 Sound playback 2 Floppy drive 3 LPT1 (ECP parallel port) 4 Cascade 5 Free 6 Free 7 Free † Models called 900† in this manual have no marking in the serial number, whereas models called 900B have 900 B after the serial number. 1-8 Product Information HP OmniBook 900