title: How can I get random numbers between -1024 and 1024 in vhdl
body: <p>I am really beginner in VHDL and I am trying to make a hot-n-cold game. My first goal is generating numbers between -1024 and 1024 so that I can use 10 switches to guess. However, there are a lot of sources about positive integers but I could not find any for negative ones. Here is a sample code of mine. Also, someone says LFSR does this job but I am new and I could not understand the behavior of LFSR. </p>
  
  <pre><code>library ieee;
  use ieee.math_real.all;
  
  entity rand_gen is
  end rand_gen;
  
  architecture behavior of rand_gen is 
  
  signal rand_num : integer := 0;
  
  begin
  
  process
      variable seed1, seed2: positive;              
      variable rand: real;   
      variable range_of_rand : real := 1024.0;   
  begin
      uniform(seed1, seed2, rand);   
      rand_num &lt;= integer(rand*range_of_rand);  
      wait for 10 ns;
  end process;
  
  end behavior;
  </code></pre>