title: What is this VHDL code setting max and min to? An explanation of fixed point representation would be helpful
body: <pre><code> constant MAX      : unsigned(18 downto 0) := "100" &amp; x"0000";
   constant MIN      : unsigned(18 downto 0) := "001" &amp; x"0000";
  </code></pre>
  
  <p>What is this VHDL code setting max and min to? An explanation of fixed point representation would be helpful.</p>