Write an assembly program that:

$-$ Loads AL with the value that is stored in location $0$x$0600$ in the memory map.

$-$ Check whether the number is a negative number or positive number.

$-$ If the number is negative, change it to positive and display it in port $0$ in the trainer kit.

$-$ Else write value $0$xFF in location $0$x$0605$ in the memory map.