汇编_01字符串转二进制

;从键盘输入一个16位2进制数，以回车结束输入，将这个数保存在BX中

StringBIN2BIN  proc near
          push ax
          push cx
          
          lea dx,tipB
          mov ah,9
          int 21h
          call CTLF
          
          xor bx,bx
 newchar2:mov ah,1
          int 21h
          cmp al,0Dh
          je ret2
          sub al,30h
          jl exit2
          cmp al,1d
          jg exit2
          cbw
          
          xchg ax,bx
          mov cx,2d
          mul cx
          xchg ax,bx
          add bx,ax 
          jmp newchar2

 exit2:   pop cx