prog6_26.asm

汇编语言-王爽 源代码 加 卜艳萍版源代码

stack  segment stack
       db  100 dup(?)
stack  ends
data  segment
      buf1  dd  12345678h,12121212h
      buf2  dd  34343434h,87654321h
      buf3  dd  ?,?  
data  ends
code  segment
      assume  cs:code,ds:data,ss:stack
begin:mov  ax,data
      mov  ds,ax
      lea  bx,buf1
      call  add64
      mov  ah,4ch
      int  21h
add64  proc near
      pushf
      push  ax
      push  cx
      mov  cx,4
      clc
again:mov  ax,[bx]
      adc  ax,[bx+8]
      mov  [bx+10h],ax
      add  bx,2
      loop  again
      pop  cx
      pop  ax
      popf
      ret
add64  endp
code  ends
      end  begin