Finished Task Rand in vhdl

hardware/signal_processing/rand.vhd

@@ -60,6 +60,9 @@ begin
     end process task_state_transitions;
 
     sync : process ( clk, reset ) is
+	variable var_lsfr_logic : std_logic_vector( 31 downto 0);
+	variable var_lsfr_signed : SIGNED( 31 downto 0);
+
     begin
         if ( reset = '1' ) then
             current_task_state <= work.task.TASK_IDLE;
@@ -85,21 +88,24 @@ begin
 				case Calc_State is
 					when CALC_IDLE =>
 						signal_write <= '0';
-						lsfr_std_logic <= STD_LOGIC_VECTOR(lsfr);
-						if(lsfr_std_logic(0) = '1') then
-							lsfr <= SIGNED(lsfr_std_logic srl 1);
-							lsfr <= SIGNED(lsfr_std_logic XOR POLYNOM);
+						var_lsfr_logic := STD_LOGIC_VECTOR(lsfr);
+						if(var_lsfr_logic(0) = '1') then
+							var_lsfr_logic := '0' & (var_lsfr_logic(31 downto 1));
+							--var_lsfr_logic := (var_lsfr_logic(31:1);
+							var_lsfr_logic := (var_lsfr_logic XOR POLYNOM);
 						else
-							lsfr <= SIGNED(lsfr_std_logic srl 1);
+							--var_lsfr_logic := (var_lsfr_logic srl 1);
+							var_lsfr_logic := '0' & var_lsfr_logic(31 downto 1);
 						end if;	
-						lsfr <= SIGNED(lsfr_std_logic);
-						lsfr_dump <= lsfr;
+						var_lsfr_signed := SIGNED(var_lsfr_logic);
+						lsfr_dump <= SIGNED(var_lsfr_logic);
 
-						if(lsfr_std_logic(30) = '1') then
-							lsfr <= lsfr(31 downto 31) & "1000000" & lsfr(23 downto 0);
+						if(var_lsfr_signed(30) = '1') then
+							var_lsfr_signed := var_lsfr_signed(31 downto 31) & "1000000" & var_lsfr_signed(23 downto 0);
 						else
-							lsfr <= lsfr(31 downto 31) & "011111" & lsfr(24 downto 0);
+							var_lsfr_signed := var_lsfr_signed(31 downto 31) & "011111" & var_lsfr_signed(24 downto 0);
 						end if;
+						lsfr <= var_lsfr_signed;
 						Calc_State <= CALC_WRITE;
 					when CALC_WRITE =>
 						signal_write <= '1';