Advantech user manual Appendix C System Assignments, C.1 System I/O Ports, PCA-6774 User Manual

Models: PCA-6774

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Appendix C System Assignments

Appendix C System Assignments

C.1 System I/O Ports

Table C.1: System I/O ports

Addr. range (Hex)

Device

 

 

00-1F

Master DMA controller

 

 

20-3F

Master Interrupt controller

 

 

40-5F

Timer/Counter

 

 

60-6F

Keyboard controller

 

 

(60h)

KBC Data

 

 

(61h)

Misc Functions & Spkr Ctrl

 

 

(64h)

KBC Command/Status

 

 

70-77

RTC/CMOS/NMI-Disable

 

 

78-7F

-available for system use-

 

 

80

-reserved-(debug port)

 

 

81-8F

DMA Page Registers

 

 

90-91

-available for system use-

 

 

92

System Control

 

 

93-9F

-available for system use-

 

 

A0-BF

Slave Interrupt Controller

 

 

C0-DF

Slave DMA Controller

 

 

E0-FF

-available for system use-

 

 

100-CF7

-available for system use*

 

 

CF8-CFB

PCI Configuration Address

 

 

CFC-CFF

PCI Configuration Data

 

 

D00-FFFF

-available for system use-

 

 

200-20F

Game Port

 

 

2F8-2FF

COM2

 

 

378-37F

Parallel Port (Standard & AFF)

 

 

3F0-3F1

Configuration Index/Data

 

 

3F0-3F7

Floppy Controller

 

 

3F8-3FF

COM1

 

 

PCA-6774 User Manual

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Page 124
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Advantech Appendix C System Assignments, C.1 System I/O Ports, Table C.1 System I/O ports, PCA-6774 User Manual