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7.3
I/O Address Map
The I/O-port addresses of the microETXexpress®-SP 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
0000 - 001F
System
Ressources
0020 - 003F
Interrupt
Controller 1
002E - 002F
WB 83627
0040 - 005F
Timer, Counter
004E - 004F
TPM
0060 - 006F
Keyboard
controller
0070 - 007F
RTC and CMOS
Registers
0080
BIOS Postcode
0081 - 008F
DMA Page Register
00A0 - 00BF
Interrupt
Controller 2
00C0 - 00DF
DMA Controller 2
00E0 - 00EF
System Control
00F0 - 00FF
Math Coprocessor
0170 – 0177
Fixed Disk
0376
01F0 - 01F7
Fixed Disk
03F6
0290-0295
WB83627 HWM
03B0 - 03DF
VGA
0400 - 043F
SMBus
0480 - 04BF
GPIO
04D0 - 04D1
PIC Extension
0900 - 091F
Power
Management
09C0 - 09FF
GPE
0A05 – 0A06
WB83627HG
Hardware Monitor
0A80 – 0A81
CPLD
C000 - CFFF
PCIe-to-PCI bridge
0CF8 - 0CFF
PCI Configuration
D000 - DFFF
PCIe-to-PCI bridge
D880 - D88F
Sil SATA Controller
E080 - E09F
PCI USB Controller
E480 - E49F
PCI USB Controller
E880 - E887
VGA
EF00 - EF1F
PCI USB Controller
FFA0 - FFAF
PCI IDE Controller
61
Available
Comment
No
Fixed
No
Fixed
No
Fixed if WB83627HG is in system
No
Fixed
No
Fixed if TPM is in system
No
Fixed
No
Fixed
No
Fixed
No
Fixed
No
Fixed
No
Fixed
No
Fixed
No
Fixed
No
Available if IDE port 1 is disabled
No
Available if IDE port 1 is disabled
No
Fixed if WB83627HG is in system
No
Fixed
No
Fixed
No
Fixed
No
Fixed
No
Fixed
No
Fixed
No
Fixed if WB83627HG is in system
No
in Future versions
No
Dynamic (BIOS default address)
No
Fixed
No
Dynamic (BIOS default address)
No
Dynamic (BIOS default address)
No
Dynamic (BIOS default address)
No
Dynamic (BIOS default address)
No
Dynamic (BIOS default address)
No
Dynamic (BIOS default address)
No
Dynamic (BIOS default address)
microETXexpress®-SP / System Ressources
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