.define .mli4 .text yl=2 yh=4 ! x * y ! xl in ax ! xh in dx .mli4: mov bx,sp push dx mov cx,ax mul yh(bx) ! xl*yh pop dx push ax mov ax,dx mul yl(bx) ! xh * yl pop dx add dx,ax ! xh*yl+xl*yh mov ax,cx mov cx,dx mul yl(bx) ! xl*yl add dx,cx ret 4