CMX147786HX
RTD Embedded Technologies, Inc.
61
Input/Output Address Map
As with all standard PC/104 boards, the Input/Output (I/O) space is addressed by 10 address lines
(SA0-SA9). This allows 2
10
or 1024 distinct I/O addresses. Any add-on modules you install must
therefore use I/O addresses in the range 0-1023 (decimal) or 000-3FF (hex).
The table below lists I/O addresses reserved for the cpuModule.
If you add any PC/104 modules or other peripherals to the
system you must ensure they
do not
use reserved addresses
listed below, or malfunctions will occur. The exception to
this is if the resource has been released by the user.
Table 31: I/O Addresses Reserved for the cpuModule
Address Range
Bytes
Device
000H-00FH 16
DMA
Controller
010H-01FH
16
Reserved for CPU
020H-021H
2
Interrupt Controller #1
022H-02FH
13
Reserved
040H-043H
4
Timer
060H-064H
5
Keyboard Interface
070H-071H
2
Real Time Clock port
080H-08FH
16
DMA page register
0A0H-0A1H
2
Interrupt controller #2
0C0H-0DFH
32
DMA controller #2
0F0H-0FFH
16
Math co-processor
100H-101H
2
Video Initialization
1F0H-1FFH
16
Hard disk
1
200H-201H
2
Reserved
238H-23BH
4
Bus Mouse
4
2E8H-2EFH
8
Serial Port
2
2F8H-2FFH
8
Serial port
2
378H-37FH
8
Parallel port
3
3BCH-3BFH
4
Parallel port
3
3E8H-3EFH
8
Serial port
2
Содержание cpuModule CMX147786HX
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