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library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_ARITH.ALL;
use IEEE.STD_LOGIC_UNSIGNED.ALL;
use IEEE.NUMERIC_STD.ALL;
entity compareScore is
Port ( currentState : in STD_LOGIC_VECTOR (1 downto 0);
currentScore : in STD_LOGIC_VECTOR (4 downto 0);
bestScore : out STD_LOGIC_VECTOR (4 downto 0);
reset : in STD_LOGIC;
clock : in STD_LOGIC);
end compareScore;
architecture Behavioral of compareScore is
signal bestScoreSauve : STD_LOGIC_VECTOR (4 downto 0);
type etats is (afficheBestScore, affichageJeu, compareScore);
signal etat_courant, etat_future : etats;
begin
combinatoire_compareScore_etat_futur : process (etat_courant, currentState)
begin
case etat_courant is
when afficheBestScore =>
if currentState = "01" then
etat_future <= affichageJeu;
else
etat_future <= afficheBestScore;
end if;
when affichageJeu =>
if currentState = "10" then
etat_future <= compareScore;
elsif currentState = "00" then
etat_future <= afficheBestScore;
else
etat_future <= affichageJeu;
end if;
when compareScore =>
if currentState = "10" or currentState = "00" then
etat_future <= afficheBestScore;
elsif currentState = "01" then
etat_future <= affichageJeu;
else
etat_future <= afficheBestScore;
end if;
when others =>
etat_future <= afficheBestScore;
end case;
end process combinatoire_compareScore_etat_futur ;
registre_score : process (clock, reset)
begin
if reset = '1' then
-- bestScoreSauve(4 downto 0) <= "00000";
etat_courant <= afficheBestScore;
elsif rising_edge (clock) then
etat_courant <= etat_future;
end if ;
end process registre_score;
circuit_compareScore_sortie : process (etat_courant, currentScore)
begin
case etat_courant is
when afficheBestScore =>
bestScore <= bestScoreSauve;
when affichageJeu =>
bestScore <= currentScore;
when compareScore =>
if (currentScore(4 downto 0) > bestScoreSauve(4 downto 0)) then
bestScoreSauve <= currentScore;
bestScore <= bestScoreSauve;
else
bestScore <= currentScore;
end if;
when others =>
bestScore <= bestScoreSauve;
end case;
end process circuit_compareScore_sortie ;
end Behavioral; |
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