mov	ax,0a000h
	mov	es,ax
	xor	di,di
	xor	ax,ax
	mov	cx,32000
	rep	stosw

	mov	ax,SEG newdata1
	mov	ds,ax
	xor	si,si
	xor	di,di
	xor	ax,ax
	mov	dx,cs:ndp
@@b:	mov	bx,ds:[si]
	mov	al,ds:[si+2]
	xor	es:[bx],al
	add	si,4
	cmp	si,dx
	jb	@@b
	ret