x6p: process
	begin
	x6 <= '0'; wait for 10 ns;
	x6 <= '1'; wait for 10 ns;
	end process ;
x5p: process
	begin
	x5 <= '0'; wait for 20 ns;
	x5 <= '1'; wait for 20 ns;
	end process ;
x4p: process
	begin
	x4 <= '0'; wait for 40 ns;
	x4 <= '1'; wait for 40 ns;
	end process ;
x3p: process
	begin
	x3 <= '0'; wait for 80 ns;
	x3 <= '1'; wait for 80 ns;
	end process ;
x2p: process
	begin
	x2 <= '0'; wait for 160 ns;
	x2 <= '1'; wait for 160 ns;
	end process ;
x1p: process
	begin
	x1 <= '0'; wait for 320 ns;
	x1 <= '1'; wait for 320 ns;
	assert false report " End " severity failure ;
	end process ;