hello dudes
i have an error,, underlined sentence above this source
error message is "HAlF_PERIOD is not agree with its usage for BOOLEAN TYPE
while i can see this message, i can't fix it,,

my tool is quatus ll 9.0





LIBRARY ieee;
USE ieee.std_logic_1164.ALL;
USE ieee.numeric_std.ALL;
ENTITY tb_dice IS
END tb_dice;
ARCHITECTURE behavior OF tb_dice IS
COMPONENT dice_game_core
PORT(
clk : IN std_logic;
rst : IN std_logic;
roll : IN std_logic;
win : OUT std_logic;
lose : OUT std_logic;
dice0 : OUT std_logic_vector(2 downto 0);
dice1 : OUT std_logic_vector(2 downto 0);
pointR : out std_logic_vector(3 downto 0)
);
END COMPONENT;
SIGNAL clk : std_logic;
SIGNAL rst : std_logic;
SIGNAL roll : std_logic;
SIGNAL win : std_logic;
SIGNAL lose : std_logic;
SIGNAL dice0 : std_logic_vector(2 downto 0);
SIGNAL dice1 : std_logic_vector(2 downto 0);
signal pointR : std_logic_vector(3 downto 0);

constant HALF_PERIOD : time := 10 ns;
constant PERIOD : time := 20 ns;
BEGIN
uut: dice_game_core PORT MAP(
clk => clk,
rst => rst,
roll => roll,
win => win,
lose => lose,
dice0 => dice0,
dice1 => dice1, pointR=>pointR
);
clkgen: process
begin
clk <= '0'; wait for HALF_PERIOD ;
clk <= '1'; wait for HALF_PERIOD ;
end process ;
stim: process
begin
rst <= '1'; -- reset
roll <= '0'; -- disable
wait for PERIOD *2;
rst <= '0'; -- release reset (start run)
wait for PERIOD ;
roll <= '1'; -- enable roll dice
wait for 5 * PERIOD ;
roll <= '0'; -- disable & sum = 7 => win
wait for 2* PERIOD;
rst <= '1';
wait for PERIOD;
rst <= '0';
roll <= '1';
wait for 3 * PERIOD;
roll <= '0'; -- disable rolling & sum = 5 => lose
wait for 2 * PERIOD;
rst <= '1';
wait for PERIOD;
rst <= '0';
roll <= '1';
wait for 11 * PERIOD; -- sum = 8
roll <= '0'; -- disable;
wait for 3 * PERIOD; -- 1 * PERIOD
roll <= '1'; -- enable rolling
wait for 6 * PERIOD;
roll <= '0'; -- sum = 8 ==> save
wait for PERIOD ;
roll <= '1';
wait for 4 * PERIOD;
roll <= '0'; -- sum = 8 --> win
wait for 2* PERIOD;
rst <= '1';
wait for PERIOD;
roll <= '1'; rst <= '0';
wait for 4 * PERIOD ;
roll <= '0'; -- sum = 6 => save;
wait for PERIOD;
roll <= '1';
wait for PERIOD ;
roll <= '0'; -- sum = 7 => lose
wait for 2 * PERIOD;
rst <= '1';
wait for PERIOD;
rst <= '0';
roll <= '1';
wait for 6 *PERIOD;
roll <= '0';
wait for 2*PERIOD;
roll <= '1';
wait for 5* PERIOD;
roll <= '0';
wait;
end process;
END behavior;

 

One thing you may have forgotten is that a process statement is viewed as one indivisible statement, that is, all the sequential statements in a process are executed at the end of the entire process. In this case, it is my guess that you are always declaring the clock as 1, since the process will only execute this statement, as it is the last assignment to "clk".

I don't have much experience with "wait for" statements... I have heard however that "wait for" statements are generally not synthesizable in a design. So if your problems are with synthesis, try to substitute the "wait for" statements with something else.

Aside from that, I'm not sure what it would be. My coding style is different.

BTW, did you choose your name "lemoneyes" from a cartoon?

 

Are you trying to compile for simulation (ModelSim) or synthesize for putting on the Altera device?

If for simulation, verify that the simulator has implemented wait...for statements and not just wait...until statements which asks for a boolean.

If you are trying to synthesis to download to the chip, the Altera part has no way of knowing what 20 ns is. You need to provide some clock to the device. It can not synthesize its own given to input.