Design a BCD counter with a asynchronous master reset. Display the values 0 to 9 on

[Altera_Forum]

Design a BCD counter with a asynchronous master reset. Display the values 0 to 9 on the 7-segment display and whenever the count is 1, 3 or 5, a Led will turn on. 

 HI,i have a problem with the program with regards to the led_on.Can any kind soul provides some advice on this?  This is so far what i've done,  -- a BCD coubter with asynchronous reset library ieee; use ieee.std_logic_1164.all; use ieee.numeric_std.all;  entity bcd_counter is port ( clk, reset_bar,led_on: in std_logic;  q : out std_logic_vector (9 downto 0));   end bcd_counter;  architecture flow of bcd_counter is  signal count_sig: unsigned (9 downto 0);  begin  process (clk, reset_bar,led_on)  begin  if (reset_bar = '1' and led_on = '1') then  count_sig <= "0000000000";    elsif falling_edge (clk) then  if (count_sig = 9) then  count_sig <= "0000000000";  else  count_sig <= count_sig +1; if(led_on = '1') then count_sig <="0000000000"; else count_sig<= count_sig +1;    end if;  end if;  end if;  end process;  q <= std_logic_vector (count_sig);  end flow;

[Altera_Forum]

What does LED_ON do ? Is it like : counter_enable?  

Or do u whant to turn the led (make is light'n up)?

[Altera_Forum]

counter_enable which triggers the 9 output. I tried compiling the graph, the only thing that doesn't toggles is the led_on ): Is it because theres a problem with my if, else? Or do i have to include the led_on, on a separate if,else statement? I really need help on this ):

[Altera_Forum]

From the looks of it led_on is your reset signal, and reset_bar specifies if its an async or sync reset. 

 What does your testbench code look like?

[Altera_Forum]

the resetbar is a master reset. Even with the compilation, the led_on was still unable to on. How do i use the if else, particularly on the led_on? So far what i've came out, is for the reset_bar. :

[Altera_Forum]

hope that image answer ur question tricky

[Altera_Forum]

Plz describe your needs for the programm. 

Also describe what every input has to do.    We can't figure out what the code has to do (or what u whant LED_ON has to do).

[Altera_Forum]

A testbench is a peice of VHDL code used to drive your unit under test in a simulator, not the board you're going to run your design on.