prog7_19.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
main  proc  far
start:push  ds
      mov  ax,0
      push  ax
      mov  ah,0
      mov  al,4
      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  dx,99
      mov  cx,0
draw_u:mov  ah,0ch
      mov  al,2
      int  10h
      dec  dx
      cmp  dx,-1
      jnz  draw_u
      inc  dx
draw_r:mov  ah,0ch
      mov  al,2
      int  10h
      inc  cx
      cmp  cx,100
      jnz  draw_r
      dec  cx
draw_d:mov  ah,0ch
      mov  al,2
      int  10h
      inc  dx
      cmp  dx,100
      jnz  draw_d
      dec  dx
draw_l:mov  ah,0ch
      mov  al,2
      int  10h
      dec  cx
      cmp  cx,-1
      jnz  draw_l
      ret
main  endp
code  ends
      end  start