下面的程序功能是将“mov ax,4c00h”之前的指令复制到内存0:200处，补全程序。上机调试，跟踪运行结果。assume cs:codecode segment mov ax,_________ mov ds,ax mov ax,0020h mov es,ax mov bx,0 mov cx,_________s: mov al,[bx] mov es:[bx],al inc bx loop s mov ax,4c00h int 21hcode endsend