assume cs: code ,ds: data
code segment
start:
mov ax,data
mov ds,ax
mov ax,00h
mov ax,num1
mov bx,num2
add ax,bx
mov result,ax
mov ah,4ch
int 21h
code ends
data segment
num1 dw 8h
num2 dw 7h
result dw 00h
data ends
end start