This program adds two double digits numbers the easy way. Click to download source code
; CODE BEGINS
TITLE TWO_DIGIT_ADDITION
.MODEL SMALL
.STACK 100H
.DATA
DIGIT1 DB 0AH, 0DH, "ENTER FIRST DIGIT: $"
DIGIT2 DB 0AH, 0DH, "ENTER SECOND DIGIT: $"
RESULT DB 0AH, 0DH, "RESULT IS $"
.CODE
MAIN:
MOV AX, @DATA
MOV DS, AX
LEA DX, DIGIT1
MOV AH, 09H
INT 21H
MOV AH, 01H
INT 21H
SUB AL, 30H
MOV BH, AL
MOV AH, 01H
INT 21H
SUB AL, 30H
MOV BL, AL ; BH:BL FIRST NUMBER
LEA DX, DIGIT2
MOV AH, 09H
INT 21H
MOV AH, 01H
INT 21H
SUB AL, 30H
MOV CH, AL
MOV AH, 01H
INT 21H
SUB AL, 30H
MOV CL, AL ; CH:CL SECOND NUMBER
ADD BL, CL
MOV AL, BL
MOV AH, 00H
AAA
MOV CL, AL ; LAST DIGIT OF ANSWER
MOV BL, AH
ADD BL, BH
ADD BL, CH
MOV AL, BL
MOV AH, 00H
AAA
MOV BX, AX
;MOV BH, AH
;MOV BL, AL
MOV DX, OFFSET RESULT
MOV AH, 09H
INT 21H
MOV DL, BH
ADD DL, 30H
MOV AH, 02H
INT 21H
MOV DL, BL
ADD DL, 30H
MOV AH, 02H
INT 21H
MOV DL, CL
ADD DL, 30H
MOV AH, 02H
INT 21H
EXIT:
MOV AH, 04CH
INT 21H
END MAIN
; CODE ENDS
FOLLOWING IS THE OUTPUT OF THE PROGRAM
