Advantech 2006957006 5th Edition D.2 1st MB memory map, D.3 DMA channel assignments, Device

Models: 2006957006 5th Edition

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D.2 1st MB memory map

D.2 1st MB memory map

Table D-2: 1st MB memory map

Addr. range (Hex)

Device

F000h - FFFFh

System ROM

 

 

E000h - EFFFh

Unused

 

 

D000h - DFFFh

SCSI ROM

 

 

*CC00h - CFFFh

Ethernet ROM

 

 

C000h - CBFFh

Expansion ROM

 

 

B800h - BFFFh

CGA/EGA/VGA text

 

 

B000h - B7FFh

Unused

 

 

A000h - AFFFh

EGA/VGA graphics

 

 

0000h - 9FFFh

Base memory

 

 

* If Ethernet boot ROM is enabled

D.3 DMA channel assignments

Table D-3: DMA channel assignments

Channel

Function

0

Available

 

 

1

Available

 

 

2

Floppy disk (8-bit transfer)

 

 

3

Available (Parallel Port)

 

 

4

Cascade for DMA controller 1

 

 

5

Available

 

 

6

Available

 

 

7

Available

 

 

** Parallel port DMA select 1 or 3

Appendix D System Assignments

107

Page 119
Image 119
Advantech 2006957006 5th Edition D.2 1st MB memory map, D.3 DMA channel assignments, Addr. range Hex, Device, Channel