e6_11.asm

ZHUYAO ZSHI LAI JIECHUADE LAIDE

stack segment stack
      dw 100 dup(?)
stack ends
data segment
     buf dw 3C6DH
data ends
code segment
     assume cs:code,ds:data,ss:stack
star:mov ax,data
     mov ds,ax
     lea si,buf
     mov bx,[si]
     mov ch,4
a1:  mov cl,4
     rol bx,cl
     mov al,bl
     and al,0fh
     add al,30h
     cmp al,3ah
     jl  a2
     add al,7
a2:  mov dl,al
     mov ah,2
     int 21h
     dec ch
     jnz a1
     mov ah,4ch
     int 21h
code ends
     end star