Question

Write an ALP for addition of two 32 bit numbers in 8086

Answer 1

data segment

abc dd 12345678h

def dd 9ABCDEF0h

ghi dw ?

data ends

code segment

assume cs:code, ds:data

start:

mov ax,data

mov ds,ax

mov dl,00h

mov ax, word ptr abc

mov bx, word ptr def

add ax,bx

mov word ptr ghi,ax

mov ax, word ptr abc+2

mov bx, word ptr def+2

adc ax,bx

mov word ptr ghi+2,ax

jnc move

inc dl

move: mov byte ptr ghi+4,dl

int 3

code ends

end start