Table 1-8. System Memory

00000 - 9FFFF

System memory

A0000 - BFFFF

Video

C0000

- CFFFF

Video BIOS

D0000

- DBFFF*

Free**

DC000*- FFFFF

System BIOS

*Approximate boundary.

**Valid uses for memory addresses D0000-DBFFF: Upper memory blocks (UMBs).

PC card memory windows.

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)

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

1-8

Product Information

HP OmniBook 7100