ADD TWO NUMBERS WHICH RESULT IS UP 10...Assembly Language

.MODEL SMALL
.STACK 100H
.DATA
.CODE
MAIN PROC
    MOV AH,1
    INT 21H

    MOV BL,AL
    INT 21H

    MOV BH,AL

    MOV AH,2
    MOV DL,0DH
    INT 21H
    MOV DL,0AH
    INT 21H

    ADD BL,BH


    MOV AL,BL
    MOV AH,0
    AAA

    MOV BX,AX
    ADD BH,48
    ADD BL,48

    MOV AH,2
    MOV DL,BH
    INT 21H


    MOV AH,2
    MOV DL,BL
    INT 21H


    MAIN ENDP
END MAIN