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I/O Port Address Map
Each peripheral device in the system is assigned a set of I/O port addresses, which
also becomes the identity of the device. There is a total of 1K-port address space
available. The following table lists the I/O port addresses used on the Industrial CPU
Card.
Address
000h - 01Fh
020h - 03Fh
040h - 05Fh
060h - 06Fh
070h – 07Fh
080h
081h-09Fh
0A0h - 0BFh
0C0h - 0DFh
0F0h - 0FFh
2E8h – 2EFh
2F8h – 2FFh
3B0h – 3DFh
3E8h – 3EFh
3F8h – 3FFh
4D0h – 4D1h
CF8h – CFFh
Device Description
DMA Controller #1
Interrupt Controller #1
Timer
Keyboard Controller
Real Time Clock, NMI
BIOS Post Code
DMA Controller #1
Interrupt Controller #2
DMA Controller #2
Math Coprocessor
Serial Port #4(COM4)
Serial Port #2(COM2)
VGA Controller
Serial Port #3(COM3)
Serial Port #1(COM1)
System Board Resource
System Board Resource
64
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