如题 下面是我改动一点的王爽老师的代码 现在还是不懂高人指点 我很着急
怎么触发他？改动后如何消失？详细点
assume cs:code
code segment
start: mov ax,0
mov es,ax
mov word ptr es:[0*4],200h
mov word ptr es:[0*4+2],0
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,4c00h
int 21h
do0: jmp short do0start
db "overflow"
do0start: mov ax,cs
mov ds,ax
mov si,202h
mov ax,0b800h
mov es,ax
mov di,12*160+36*2
mov cx,9
s: mov al,[si]
mov es:[di],al
inc si
add di,2
loop s
mov ax,4c00h
int 21h
do0end:nop
code ends
end start |
