Advantech PCA-6763, User Manual

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81 PCA-6763 User Manual
Appendix C
P
rogramming
the
G
PIO
INC DX
MOV AL,07H ; Select logical device 7
OUT DX,AL ;
DEC DX
MOV AL,E0H
OUT DX,AL
INC DX
MOV AL,00H ; 1:Input 0:output for GPIO respective
OUT DX,AL
DEC DX
MOV AL,E2H ;
OUT DX,AL
INC DX
MOV AL,00H ;Set GPIO is normal not inverter
OUT DX,AL;
DEC DX
MOV AL,E1H
OUT DX,AL
INC DX
MOV AL,??H ; Put the output value into AL
OUT DX,AL
------------------------------------------
Exit extended function mode |
------------------------------------------
MOV DX,2EH
MOV AL,AAH
OUT DX,AL