Advantech som-4450 cpu system on module som-4450 etx User Manual
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SOM-4450 User's Manual
B.1
System I/O ports
Table B-1: System I/O ports
Addr. range
(Hex)
(Hex)
Device
000-01F
DMA controller (slave)
020-03F
Interrupt controller 1, (master)
040-05F
8254 timer/counter
060-06F
8042 (keyboard controller)
070-07F
Real-time clock, non-maskable interrupt (NMI)
mask
080-09F
DMA page register,
0A0-0BF
Interrupt controller 2 (slave)
0C0-0DF
DMA controller (master)
0F0
Clear math co-processor
0F1
Reset math co-processor
0F8-0FF
Math co-processor
170- 178
2nd fixed disk for CompactFlash
1F0-1F8
1st fixed disk
200-207
Game I/O
278-27F
Reserved
2F8-2FF
Serial port 2
300-31F
Ethernet**
360-36F
LPT2
378-37F
Parallel printer port 1 (LPT1)
380-38F
SDLC, bisynchronous 2
3A0-3AF
Bisynchronous 1
3B0-3BF
Monochrome display
3C0-3CF
Reserved
3D0-3DF
Color/graphics monitor adapter
3F0-3F7
Diskette controller
3F8-3FF
Serial port 1
443
Watchdog timer
** default setting