Problem $3.(10$ points$)$

How long will the following codes take to run with an $8$MHZ clock:

a$.$ Program source code$1$:

$1$: CALL WAIT

$.......$

$2$: WAIT: MOVLW d$4$

$3$: MOVWF COUNT

$4$: LOOP: DECFSZ COUNT, $1$

$5$: GOTO LOOP

RETURN

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

b$.$ Program source code$2$:

$1$: A: MOVLW d$3$

$2$: MOVWF COUNT

$3$: NXT: DECFSZ COUNT, F

$4$: GOTO NXT

B: $...$

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$