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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
Device Description
000h – 00Fh
DMA Controller #1
020h – 021h
Interrupt Controller #1
040h – 043h
System Timer
060h – 064h
Keyboard Controller
070h – 073h
Real Time Clock
080h – 090h
DMA Page Register
0A0h – 0A1h
Interrupt Controller #2
0C0h - 0DFh
DMA Controller #2
0F0h
Clear Math Coprocessor Busy Signal
0F1h Reset
Math
Coprocessor
1F0h - 1F7h
Primary IDE Interface
376h
Secondary IDE Controller
3B0 – 3DFh
VGA Adapter
3F7h
Primary Controller
3F8h - 3FFh
Serial Port #1(COM1)
400h – 45Fh
ACPI I/O Space
CF8h – CFFh
PCI Configuration Port
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