-------------------------------------------------------------------------------
-- CSE 471 Project #5 ; 8-bit Microcontroller Design
-- Section : 2
-- Designer : Meghan Hoke
-- Date : 11/15/2001
-- File : mux1.vhd
-- Description : 1-bit 2-to-1 multiplexer
-------------------------------------------------------------------------------

library IEEE;
use IEEE.std_logic_1164.all;

entity mux1 is
    
    port (d0, d1 : in std_logic;
	  s : in std_logic;
	  z : out std_logic);

end mux1;

architecture struc of mux1 is

    signal sinv, s1, s2 : std_logic;

begin
    sinv <= not s after 10 ns;

    s1 <= d1 nand s after 11 ns;
    s2 <= d0 nand sinv after 11 ns;
    z <= s1 nand s2 after 11 ns;
end struc;