יחעחי

mov di,0
        mov si,0
        mov cx,10

    ll:
        mov ah,1
        int 21h
        mov str1[si],al

        lea dx,msg
        mov ah,9
        int 21h

        cmp al,'0'
        je con


        inc si

        loop ll

        mov si,0
        mov cl,str1[2]



    con:


        mov dl,str1[di]

        cmp dl,'0'
        je finish
        mov ah,2
        int 21h

        inc di
        loop con

    finish:
        dec di
        lea dx,msg
        mov ah,9
        int 21h

    replace:
        mov dl,str1[di]
        mov ah,2
        int 21h

        cmp dl,'0'
        je finish2


        dec di
        loop replace
    finish2:
        mov ah,4ch
        int 21h