DAA			    00100111

Convert 16bit to bcd 5 digits

        ;
        ; enter with four-bit binary 0 - 15 in al
        ;
        add     al,90h          ;feed it a cookie :-)
        daa                     ;abuse BCD codes in a magical way
        adc     al,40h          ;nothing up muh sleeve...
        daa                     ;Presto!
        ;
        ; now al contains correct ascii hex digit 0-9,A-F.  It's magic!
        ;