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[SOLVED] how to find the difference between the count values.

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prashanthi999

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hello every one!!, my question actually is how can we find the difference between the count values
for eg i have a count that counts from 1 to 16 ,so 1,2,3,4,5,6,7,8,9 and so on, now i need to find the difference between the second count and first count , and third count and secnd count , and fourth count and third countand so on , so my diff_count signal will be like this 1,1,1,1, ( since 2-1=1,,3-2=1,,4-3=1,, and so on ) and it keeps repeating.


here is my general counter code
Code VHDL - [expand]
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library IEEE;
use IEEE.STD_LOGIC_1164.ALL;
use IEEE.STD_LOGIC_arith.ALL;
use IEEE.STD_LOGIC_unsigned.ALL;
 
 
entity up is
    port ( clk: in std_logic;
         reset: in std_logic;
    count: out std_logic_vector(4 downto 0)
                );
end up;
 
architecture Behavioral of up is
 
signal a : std_logic_vector(4 downto 0);
 
begin
 count <=a;
 
    process(clk,reset)
  begin
  
    if(clk'event and clk='1') then
      if(reset ='1') then
        a <= (others=>'0');
               else
        a<= a + 1;
        end if;
            end if;
     end process;
        
 
end Behavioral;
 
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