So I understand the concept of a latch, but I'm not seeing how I am inferring one here as my else condition should cover all the possible paths through this process. Quartus is telling me it is disabling the greenLEDS and redLEDs because of LATCH primitive, as well as there is an inferred latch on them. Am I missing something here?
process(current,advance,playerWins,dealerWins) begin
if(advance) then
case current is
when START =>
deal <= '1';
dealTo <= '1';
dealToCardSlot <= "00";
greenLeds <= (others => '0');
redLeds <= (others => '0');
when PT1 =>
deal <= '1';
dealTo <= '1';
dealToCardSlot <= "01";
greenLeds <= (others => '0');
redLeds <= (others => '0');
when DT1 =>
deal <= '1';
dealTo <= '0';
dealToCardSlot <= "00";
greenLeds <= (others => '0');
redLeds <= (others => '0');
when PT2 =>
deal <= '1';
dealTo <= '1';
dealToCardSlot <= "10";
greenLeds <= (others => '0');
redLeds <= (others => '0');
when PT3 =>
deal <= '1';
dealTo <= '1';
dealToCardSlot <= "11";
greenLeds <= (others => '0');
redLeds <= (others => '0');
when DT2 =>
deal <= '1';
dealTo <= '0';
dealToCardSlot <= "01";
greenLeds <= (others => '0');
redLeds <= (others => '0');
when DT3 =>
deal <= '1';
dealTo <= '0';
dealToCardSlot <= "10";
greenLeds <= (others => '0');
redLeds <= (others => '0');
when DT4 =>
deal <= '1';
dealTo <= '0';
dealToCardSlot <= "11";
greenLeds <= (others => '0');
redLeds <= (others => '0');
when WIN =>
deal <= '0';
dealTo <= '0';
dealToCardSlot <= "00";
if(playerWins) then
greenLeds <= (others => '1');
elsif(dealerWins) then
redLeds <= (others => '1');
else
greenLeds <= (others => '0');
redLeds <= (others => '0');
end if;
when ENDGAME =>
deal <= '0';
dealTo <= '1';
dealToCardSlot <= "00";
greenLeds <= (others => '0');
redLeds <= (others => '0');
when others =>
deal <= '0';
dealTo <= '0';
dealToCardSlot <= "00";
greenLeds <= (others => '0');
redLeds <= (others => '0');
end case;
else
deal <= '0';
dealTo <= '0';
dealToCardSlot <= "00";
greenLeds <= (others => '0');
redLeds <= (others => '0');
end if;
end process;
when WIN =>
deal <= '0';
dealTo <= '0';
dealToCardSlot <= "00";
if(playerWins) then
greenLeds <= (others => '1');
elsif(dealerWins) then
redLeds <= (others => '1');
else
greenLeds <= (others => '0');
redLeds <= (others => '0');
end if;
You do not assign redLeds
if playerWins
is false and dealerWins
is true. Likewise, you do not assign greenLeds
if playerWins
is true.