assume cs:codesg
codesg segment
begin: mov ax,cs
mov ds,ax
mov si,offset do0
mov ax,0
mov es,ax
mov di,200h
mov cx,offset do0end-offset do0
cld
rep movsb
mov ax,0
mov es,ax
mov word ptr es:[0*4],200h
mov word ptr es:[0*4+2],0
mov ax,4c00h
int 21h
do0: jmp short do0start
db 'divide error!'
do0start: mov ax,cs
mov ds,ax
mov si,202h ;设置ds:si指向字符串;jmp short do0start占有2个字节
mov ax,0b800h
mov es,ax
mov di,12*160+36*2 ;设置es:di指向显存空间的中间位置
mov cx,13 ;设置cx为字符串长度
s1: mov al,[si]
mov es:[di],al
inc si
add di,2
loop s1
mov ax,4c00h
int 21h
do0end: nop
codesg ends
end begin