Aggiunti ShiftLeft e ZeroCounter

UTILS.vhd

@@ -0,0 +1,63 @@
+--
+--	Package File Template
+--
+--	Purpose: This package defines supplemental types, subtypes, 
+--		 constants, and functions 
+--
+--   To use any of the example code shown below, uncomment the lines and modify as necessary
+--
+
+library IEEE;
+use IEEE.STD_LOGIC_1164.all;
+
+package UTILS is
+
+-- type <new_type> is
+--  record
+--    <type_name>        : std_logic_vector( 7 downto 0);
+--    <type_name>        : std_logic;
+-- end record;
+--
+-- Declare constants
+--
+-- constant <constant_name>		: time := <time_unit> ns;
+-- constant <constant_name>		: integer := <value;
+--
+-- Declare functions and procedure
+--
+-- function <function_name>  (signal <signal_name> : in <type_declaration>) return <type_declaration>;
+-- procedure <procedure_name> (<type_declaration> <constant_name>	: in <type_declaration>);
+--
+type ARRAY_OF_STD_LOGIC48 is array (0 to 512) of std_logic_vector(47 downto 0);
+
+end UTILS;
+
+package body UTILS is
+
+---- Example 1
+--  function <function_name>  (signal <signal_name> : in <type_declaration>  ) return <type_declaration> is
+--    variable <variable_name>     : <type_declaration>;
+--  begin
+--    <variable_name> := <signal_name> xor <signal_name>;
+--    return <variable_name>; 
+--  end <function_name>;
+
+---- Example 2
+--  function <function_name>  (signal <signal_name> : in <type_declaration>;
+--                         signal <signal_name>   : in <type_declaration>  ) return <type_declaration> is
+--  begin
+--    if (<signal_name> = '1') then
+--      return <signal_name>;
+--    else
+--      return 'Z';
+--    end if;
+--  end <function_name>;
+
+---- Procedure Example
+--  procedure <procedure_name>  (<type_declaration> <constant_name>  : in <type_declaration>) is
+--    
+--  begin
+--    
+--  end <procedure_name>;
+ 
+end UTILS;