test.asm

.model small
.stack 100h
.data
prompt db 13, 10, 'First number:','$'
prompt db 13,10, 'Second number:', '$'
result db 13, 10, 'Sum','$'

;Variables

num1 db ?
num2 db ?
sum db ? 

.code 
main proc

	mov ax,@data		   ;get data segment address
	mov ds,ax			   ;initialize ds

;Display Prompt

	mov ah,9	;print string function
	mov dx,offset prompt;ds:dx points to string
	int 21h

; Numbers from the user
 	mov ah,1 	;input function
 	int 21h
 	mov bl,al 	;save the value from input
	mov num1,al

	mov ah,9
	lea dx, prompt 	;print prompt
	int 21h

	mov ah,2 	;input second function
 	int 21h
 	mov bh,al 	;save the value from second input
	mov num2,al

;Addition
		mov ax,num1			;move num1 into ax
		add ax,num2			;add first and second numbers together
		mov sum,ax			 ;move the total sum of numbers in sum



;Print Sum
	mov ah,9
		lea dx, result		 ; print result
	int 21h

	mov ah,2 
	mov dl,bl
	int 21h

		mov dl,'+'			 ;display + sign
	int 21h

	mov dl,bh
	int 21h


		mov dl,'='			 ;display = sign
	int 21h

	mov dl,bh
	int 21h

		mov ah,4ch
		int 21h

 main endp


end main