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data segment dat db 0dh,0ah,$data endscode segment assume cs:code,ds:datastart: mov ax,data mov ds,ax mov dl,16 mov cx,2 mov bx,0lp: mov ah,01h int 21h cmp al,3ah jl next sub al,07h jmp nextnext: sub al,30h cbw xchg ax,bx mul dl xchg ax,bx add bx,ax loop lp lea dx,dat mov ah,09h int 21h mov cx,8lp1: test bx,80h jnz next1 mov dl,0 mov ah,02h int 21h jmp next2next1: mov dl,1 mov ah,02h int 21hnext2: shl bx,1 loop lp1 jcxz exitexit: mov ah,4ch int 21hcode ends end start