3 i/o address map, I/o address map, Etx-oh / system resources – Kontron ETX-OH User Manual

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ETX-OH / System Resources

5.3

I/O Address Map

The I/O-port addresses of the are functionally identical to a standard PC/AT. All addresses not mentioned in this table
should be available. We recommend that you do not use I/O addresses below 0100h with additional hardware for
compatibility reasons, even if available.

I/O Address Used for

Available

Comment

0000 - 001F

System Ressources

No

Fixed

0020 - 0021 Interrupt Controller 1

No

Fixed

0022 - 003F

System Ressources

No

Fixed

002E - 002F

SIO

No

Fixed

0040 - 0043 Timer, Counter

No

Fixed

0044 - 005F System Ressources

No

Fixed

004E - 004F

TPM

No

Fixed

0060 - 0060 Keyboard controller

No

Fixed

0061 - 0061

System Speaker

No

Fixed

0062 - 0063 System Ressources

No

Fixed

0064 - 0064 Keyboard controller

No

Fixed

0065 - 006F

System Ressources

No

Fixed

0070 - 007F

RTC and CMOS Registers No

Fixed

0080

BIOS Postcode

No

Fixed

0081 - 009F

DMA Controller

No

Fixed

00A0 - 00BF Interrupt Controller

No

Fixed

00C0 - 00DF DMA Controller

No

Fixed

00E0 - 00EF

System Ressources

No

Fixed

00F0 - 00FF

Math Coprocessor

No

Fixed

0290 - 029F

SIO

No

Fixed

02E8 - 02EF

External SIO COM4

Not with ext. SIO Fixed

03B0 - 03DF VGA

No

Fixed

03E8 - 03EF

External SIO COM3

Not with ext. SIO Fixed

040B - 040B Chipset

No

Fixed

04D0 - 04D1 Chipset

No

Fixed

04D6 - 04D6 Chipset

No

Fixed

0800 - 089F

Chipset

No

Fixed

0900 - 090F

Chipset

No

Fixed

0910 - 091F

Chipset

No

Fixed

0B20 - 0B3F Chipset

No

Fixed

0C00 - 0C01

Chipset

No

Fixed

0C14

Chipset

No

Fixed

0C50 - 0C52

Chipset

No

Fixed

0C6C

Chipset

No

Fixed

0C6F

Chipset

No

Fixed

0CD0 - 0CDF Chipset

No

Fixed

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