3 i/o address map, Table 22: i/o address assignments – Kontron ETXexpress-AI User Manual
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Kontron ETXexpress-AI User’s Guide
71
7.3
I/O Address Map
The I/O-port addresses of the ETXexpress®-AI COM are functionally identical
to those of a standard PC/AT system, so any addresses not mentioned in Table
22 should also be available. All addresses are fixed I/O ranges that are
decoded by the PCH used in this module.
Table 22: I/O Address Assignments
I/O
Address
Read Target
Write Target
Internal
Unit
00h-08h
DMA Controller
DMA Controller
DMA
09h-oEh
Reserved
DMA Controller
DMA
0Fh
DMA Controller
DMA Controller
DMA
10h-18h
DMA Controller
DMA Controller
DMA
19h-1Eh
Reserved
DMA Controller
DMA
1Fh
DMA Controller
DMA Controller
DMA
20h-21h
Interrupt
Controller
Interrupt
Controller
Interrupt
24h-25h
Interrupt
Controller
Interrupt
Controller
Interrupt
28h-29h
Interrupt
Controller
Interrupt
Controller
Interrupt
2Ch-2Dh
Interrupt
Controller
Interrupt
Controller
Interrupt
2E-2F
LPC SIO
LPC SIO
Forwarded
to LPC
30h-31h
Interrupt
Controller
Interrupt
Controller
Interrupt
34h-35h
Interrupt
Controller
Interrupt
Controller
Interrupt
38h-39h
Interrupt
Controller
Interrupt
Controller
Interrupt
3Ch-3Dh
Interrupt
Controller
Interrupt
Controller
Interrupt
40h-42h
Timer/Counter
Timer/Counter
PIT (8254)
43h
Reserved
Timer/Counter
PIT
4E-4F
LPC SIO
LPC SIO
Forwarded
to LPC
50h-52h
Timer/Counter
Timer/Counter
PIT
53h
Reserved
Timer/Counter
PIT
60h
Microcontroller
Microcontroller
Forwarded
to LPC
61h
NMI Controller
NMI Controller
Processor
I/F
62h
Microcontroller
Microcontroller
Forwarded
to LPC
64h
Microcontroller
Microcontroller
Forwarded
to LPC
–66h
Microcontroller
Microcontroller
Forwarded
to LPC