.define .cms	! #bytes in cx	.text.cms:	pop     bx              ! return address	mov     dx,sp	push	si	push	di	mov     si,dx	add     dx,cx	mov     di,dx	add     dx,cx	sar     cx,#1	repe	cmp	je      1f	inc     cx1:	pop	di	pop	si	mov     sp,dx	jmp     (bx)