prog6_10.asm

汇编语言-王爽 源代码 加 卜艳萍版源代码

stack  segment stack
       db  256 dup(?)
stack  ends
data  segment
ascbuf  db 35h,38h,30h,4dh,39h,32h
        db  6 dup(?)
data  ends
code  segment
      assume  cs:code,ds:data,ss:stack
start:mov  ax,data
      mov  ds,ax
      mov  cx,6
      mov  di,offset ascbuf
lab1: mov  bl,0ffh
      mov  al,[di]
      cmp  al,3ah
      jnb  ok
      sub al,30h
      jc  ok
      mov  bl,al
   ok:mov  al,bl
      mov  [di+6h],al
      inc  di
      loop  lab1
      mov  ah,4ch
      int  21h
code  ends
      end  start