.define .sti.define .sts.text	! #bytes in cx	! address in bx	! save di/si. they might be register variables.sts:	mov	dx,di		! save di	mov	di,bx	pop     bx              ! return address	sar     cx,#1	jnb     1f	pop     ax	stosb	mov	di,dx	jmp     (bx).sti:	! only called with count > 4	mov	dx,di	mov	di,bx	pop	bx	sar	cx,#11:	mov	ax,si	mov     si,sp	rep	mov	mov     sp,si	mov	di,dx	mov	si,ax	jmp     (bx)