;program puts a character on  the screen
;
        mov     ah,  0eh        ;teletype subfunction
        mov     bh,  0          ;video page 0
        mov     al,  41h        ;could be 'A' or 65
        int     10h             ;video interrupt
        mov     al,  'H'        ;could be 'A' or 65
        int     10h             ;video interrupt

        int     20h
        end