prog7_20.asm

汇编语言-王爽 源代码 加 卜艳萍版源代码

stack  segment stack
       dw  64 dup(?)
stack  ends
code  segment
      assume  cs:code,ss:stack
start:mov  ah,0
      mov  al,04h
      int  10h
      mov  ah,0bh
      mov  bh,0
      mov  bl,0fh
      int  10h
      mov  ah,0bh
      mov  bh,1
      mov  bl,0
      int  10h
      mov  cx,0a0h
      mov  dx,64h
draw: mov  ah,0ch
      mov  al,02h
      int  10h
again:mov  ah,0
      int  16h
      cmp  al,1bh
      jz  finish
      mov  al,ah
      cmp  al,48h
      jnz  draw_d
      dec  dx
      jmp  draw
draw_d:cmp  al,50h
      jnz  draw_l
      inc  dx
      jmp  draw
draw_l:cmp  al,4bh
      jnz  draw_r
      dec  cx
      jmp  draw
draw_r:cmp  al,4dh
      jnz  again
      inc  cx
      jmp  draw
finish:mov  ah,4ch
      int  21h
code  ends
      end  start