		.186
code		segment
		assume	cs:code,ds:code
		org	100h
entry:
main		proc	near		;これ以降は常駐時切り捨てられる
			mov	dx,05ech
			in	al,dx 
			xor	al,1
			out	dx,al 
			mov	ax,4c00h
			int	21h
main		endp
code		ends
end			entry
