测试文章

assume cs:codesg
codesg segment
        mov ax,4c00h
        int 21h
start:mov ax,0
    s: nop
        nop
    
        mov di,offset s
        mov si,offset s2
        mov ax,cs:[si]
        mov cs:[di],ax

    s0:mov ax,0
        int 21h
        mov ax,0

    s2:jmp short s1
        nop

codesg ends
end start