Table 1-9. System Input/Output Addresses (100-3FF)

120-127

Audio (OmniBook 4150† 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

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)

†Models called 4150† in this manual have no marking in the serial number, whereas models called 4150B have 4150 B after the serial number.

 

Table 1-10. DMA Channels

0

Sound record (OmniBook 4100/4150†)

 

Free (OmniBook 4150B)

1

Sound playback

2

Floppy drive

3

LPT1 (ECP parallel port)

4

Cascade

5

Free

6

Free

7

Free

†Models called 4150† in this manual have no marking in the serial number, whereas models called 4150B have 4150 B after the serial number.

1-8

Product Information

HP OmniBook 4100/4150