;This source was written in orGASM

        org 100h



start:

        mov     al, 13h

        int     10h



        lds bp,[bx]    ; thx to BlackJack, who gave me this tip



        dec     byte [si]



drawloop:

        inc     si

        inc     si

        add     byte [si], 2

        inc     si

        inc     si

        inc     byte [si]



        jmp     drawloop