.model  tiny
        .code
        .486
        org     100h
start:  mov     ax, 5
        call    binout
        call    crlf
        mov     ax, 50
        call    binout
        call    crlf
        mov     ax, 9000
        call    binout

crlf:   mov     al, 0Dh         ;new line
        int     29h
        mov     al, 0Ah
        int     29h
        ret

binout: push    ax
        shr     ax, 1
        je      bo10
         call   binout
bo10:   pop     ax
        and     al, 01h
        or      al, '0'
        int     29h             ;display character
        ret
        end     start