; Program to compute 16 bit subtraction of the data.
DATA SEGMENT ;INITIALIZE DATA SEGMENT
NUM1 DW 4537H ;INITIALIZE NUM1 ANY DATA
NUM2 DW 2222H ;INITIALIZE NUM2 ANY DATA
RESULT DW ? ;INITIALIZE RESULT
DATA ENDS ;END OF DATA SEGMENT
CODE SEGMENT ;INITIALIZE CODE SEGMENT
START: ;START THE CODE
ASSUME CS:CODE , DS:DATA ;ASSUMPTION OF CODE AND DATA
MOV AX,DATA ;MOV DATA INTO ACCUMULATOR AX
MOV DS,AX ;MOV DATA FROM ACCUMULATOR INTO DATA SEGMENT REGISTER
MOV AX,NUM1 ;MOV NUM1 INTO ACCUMULATOR AX REGISTER
MOV BX,NUM2 ;MOV NUM2 INTO BASE BX REGISTER
SUB AX,BX ;SUBTRACTING THE CONTENTS OF AX AND BX. RESULT IS STILL IN ACCUMULATOR
MOV RESULT,AX ;MOVE THE RESULT FROM AX INTO RESULT VARIABLE
MOV AH,4CH ;END OF THE CODE
INT 21H ;END OF THE CODE
CODE ENDS ;END OF CODE SEGMENT
END START ;END OF START
Darshan Gajara 