combinatorio

--circuito combinatorio

library IEEE;
use IEEE.std_logic_1164.all;
use ieee.numeric_std.all;

entity combinatorio is
    port (
        estados:      in std_logic_vector(2 downto 0);
        VdA_s, AmA_s, VmA_s, VdB_s, AmB_s, VmB_s, VmP_s, VdP_s:  out std_logic;
        conta:      out std_logic_vector(1 downto 0)

    );
end combinatorio;


----------------------------------------------------------
-------------- Arquitetura --------------------------------
architecture comportamental_comb of combinatorio is


    --------- Declaracao de sinais usados -------
    signal output :  std_logic_vector(7 downto 0);
    ---------------------------------------------------


---------------------------------------------
-------- Descricao do comportamento
begin

    saidaoutput: with estados select
      output <=     "10000110" when "000",
                    "01000110" when "001",
                    "00101010" when "010",
                    "00110010" when "011",
                    "00000000" when "100",--apagado
                    "00100101" when "101",--pedestres
                    "01001010" when "110",
                    "01001010" when others;


    --- Saidas (Via A e Via B)

    VdA_s <= output(7);
    AmA_s <= output(6);
    VmA_s <= output(5);
    VdB_s <= output(4);
    AmB_s <= output(3);
    VmB_s <= output(2);

    -- Saidas pedestres
    VmP_s <= output(1);
    VdP_s <= output(0);
    -- Trigger
    saidaconta: with estados select
      conta <=    "11" when "000",--1min
                  "01" when "001",--5s
                  "01" when "010",--5s
                  "11" when "011",--1min
                  "11" when "101",--1min
                  "00" when others; --1s


end architecture;