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Question $15$

What does the next instructions?

LDR RO$,$ GPIO$\_$PORTA$\_$DEN$\_$R

MOV R$1,0$xF$0$

STR R$1,[$R$0]$

This procedure disables the digital pins $7,6,5$ and $4$ of port $A.$

This procedure enables the digital pins $7,6,5$ and $4$ of port $A.$

This procedure enables the digital pins $3,2,1,$ and $0$ of port A

This procedure enables the Port $A$ as input