Added kempston, autofire and enable autofire, enable turbo push buttons for GPIO1[32] and GPIO1[33]

sdram.vhdl

@@ -71,8 +71,11 @@ architecture rtl of sdram_controller is
    end component;
 
    -- note to self - this constant should be "(others => '0')" when not simulating!!!
+--   signal r : reg := ((others => '0'), (others => '0'), 
+--                      (others => '0'), "000000000001000", (others => '0'), 
+--                      '0', '0', '0', (others => '0'), (others => '0'), '0', (others => '0'));
    signal r : reg := ((others => '0'), (others => '0'), 
-                      (others => '0'), "000000000001000", (others => '0'), 
+                      (others => '0'), (others => '0'), (others => '0'), 
                       '0', '0', '0', (others => '0'), (others => '0'), '0', (others => '0'));
    signal n : reg;
    
@@ -170,10 +173,12 @@ sdram_clk_pll: sdram_clk_gen
       n <= r;
       if req_read = '1' then
          n.rd_pending <= '1';
+			n.data_out_valid <= '0';
       end if;
       
       if req_write = '1' then
          n.wr_pending <= '1';
+			n.data_out_valid <= '0';
       end if;
       
       n.dq_masks     <= "11";