AXIOMTEK CAPA110, User Manual

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Single Board Computer
distronik GmbH
https://www.distronik.de
The onboard digital I/O has 8 bits (DIO0~7). Each bit can be set to function as input or output
by software programming. In default, all pins are pulled high with +5V level (according to main
power). The BIOS default settings are 3 inputs and 5 outputs where all of these pins are set to
1.
1 DI0 (Bit0) 2 DO0 (Bit 3)
3 DI1 (Bit1) 4 DO1 (Bit 4)
5 DI2 (Bit2) 6 DO2 (Bit 5)
7 GND 8 DO3 (Bit 6)
9 GND 10 DO4 (Bit 7)
Assembly sample code :
;Start set DIO program:
mov
dx,2Eh
mov al,87h ;Un-lock super I/O
out dx,al
out dx,al
mov dx,2Eh
mov al,07h
out dx,al
mov dx,2Fh
mov al,08h
out dx,al
mov dx,2Eh
mov al,30h
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