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Kontron
System Resource Allocations
48
MOPS/386A User’s Guide
20.4
I/O Address Map
The I/O-port addresses of the processor module MOPS/386A 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 0110hex with additional hardware for
compatibility reasons, even if they are available on the MOPS/386A.
I/O
Addresses
Use
Available
Comment
0000-000Fh
DMA Controller 1
No
Fixed
0020-003Fh
Interrupt Controller 1
No
Fixed
0040-0043h
Counter/timer
No
Fixed
0050-005Fh
Onboard control registers
No
Fixed
0060-0064h
Keyboard controller
No
Fixed
0070-0071h
Real-time clock
No
Fixed
0080-008Fh
DMA page register 74LS612
No
Fixed
0092h
Port A register (Fast A20 Gate)
No
Fixed
00A0-00BFh
Interrupt Controller 2
No
Fixed
00C0-00DEh
DMA Controller 2
No
Fixed
00EC-00EFh
Configuration registers
No
Fixed
00F0-00FFh
Math coprocessor
No
Fixed
01F0-01F8h
Fixed disk
No
Fixed
0278-027Fh
Parallel Port 2
Yes
Free in standard configuration,
but possible address of LPT.
02E8-02EFh
User specific Serial Port
(COM4)
Yes
Free in standard configuration,
but possible address of COM.
02F8-02FFh
Serial Port 2
No
Default for COM B, free with
different configuration.
0300-030Fh
Onboard Ethernet
No
The Ethernet controller can be
configured to another I/O port
address with the setup tool; it
cannot be disabled.
0370-0377h
Configuration Port
No
Configuration address for SMC-
controller.
0378-037Fh
Parallel Port 1
No
Default for LPT 1; free with
different configuration.
03BC-03C4h
User-specific Parallel Port
Yes
Free in standard configuration
but possible address of LPT.
03E8-03Efh
User-specific Serial Port
(COM3)
Yes
Free in standard configuration,
but possible address of COM.
03F0-03F7h
Diskette controller
No
Fixed.
03F8-02FFh
Serial Port 1
No
Default for COM A; free if
different configuration used.
Note
: The Super I/O Controller is connected to ISA address lines A0 to A10. The I/O port
addresses of the SMsC FDC37C669 will be mirrored every 800hex in the I/O address
space.