Question $3$

$(4$ Marks$)$

$($a$)$ What can the following program do$?$

$($b$)$ Compute the last value of SUM and AX$.$

$.$MODEL SMALL

$.$STACK $64$

$.$DATA

Count EQU $05$

DATA$\_$IN DB $125,235,190,90,10$

Sum DW $?$

$.$CODE

MAIN PROC FAR

MOV AX$,$ @DATA

MOV DS$,$ AX

MOVCS, Count

MOV SI$,$ OFFSET DATA$\_$IN

MOV AX$,00$

BACK: ADD AL$,[$SI$]$

JNC OVER

INC AH

OVER: INCSI

DEC CX

JNZ BACK

MOV SUM,AX

MOV AH$,4$ CH

NT $21$ H

MAIN ENDP

END MAIN