diff --git a/libraries/technology/10gbase_r/tech_10gbase_r_arria10.vhd b/libraries/technology/10gbase_r/tech_10gbase_r_arria10.vhd
index 2684684367914ac5a9e67672425909c73e87ba73..b4dddbf5505204a798dd1e59df0feea7f574723e 100644
--- a/libraries/technology/10gbase_r/tech_10gbase_r_arria10.vhd
+++ b/libraries/technology/10gbase_r/tech_10gbase_r_arria10.vhd
@@ -66,8 +66,9 @@ END tech_10gbase_r_arria10;
 
 ARCHITECTURE str OF tech_10gbase_r_arria10 IS
 
-  --CONSTANT c_nof_channels_per_ip : NATURAL := sel_a_b(g_nof_channels=24, 24, 1); -- only support single 1 or block of 12 
+  -- FIXME check selection of g_nof_channels to be 1,4,12 or 24
 
+  --CONSTANT c_nof_channels_per_ip : NATURAL := sel_a_b(g_nof_channels=24, 24, 1); -- only support single 1 or block of 12 
   --CONSTANT c_nof_channels_per_ip : NATURAL := 24 WHEN g_nof_channels=24 ELSE 12 WHEN g_nof_channels=12 ELSE 1;
   CONSTANT c_nof_channels_per_ip : NATURAL := g_nof_channels;
 
@@ -134,6 +135,7 @@ BEGIN
     xgmii_rx_dc_arr(I)      <= func_xgmii_dc(rx_parallel_data_arr(I), rx_control_arr(I));
   END GENERATE;
   
+
   gen_phy_1 : IF c_nof_channels_per_ip=1 GENERATE
     gen_channels : FOR I IN 0 TO g_nof_channels-1 GENERATE
       u_ip_arria10_phy_10gbase_r : ip_arria10_phy_10gbase_r
@@ -202,6 +204,8 @@ BEGIN
     END GENERATE;
   END GENERATE;
 
+
+
   gen_phy_4 : IF c_nof_channels_per_ip=4 GENERATE
     tx_serial_clk_slv <= (OTHERS=>tx_serial_clk(0));
     tr_coreclkin_slv  <= (OTHERS=>tr_coreclkin(0));
@@ -284,6 +288,8 @@ BEGIN
   END GENERATE;
   
 
+
+
   gen_phy_12 : IF c_nof_channels_per_ip=12 GENERATE
     tx_serial_clk_slv <= (OTHERS=>tx_serial_clk(0));
     tr_coreclkin_slv  <= (OTHERS=>tr_coreclkin(0));
@@ -366,6 +372,8 @@ BEGIN
   END GENERATE;
 
 
+
+
   gen_phy_24 : IF c_nof_channels_per_ip=24 GENERATE
     tx_serial_clk_slv <= (OTHERS=>tx_serial_clk(0));
     tr_coreclkin_slv  <= (OTHERS=>tr_coreclkin(0));
@@ -446,6 +454,8 @@ BEGIN
       tx_ready           => xgmii_tx_ready_arr(IP_SIZE-1 DOWNTO 0)      -- : out std_logic_vector(11 downto 0)                     --           tx_ready.tx_ready
     );    
   END GENERATE;
+
+
   
   -- ATX PLL
   u_ip_arria10_transceiver_pll_10g : ip_arria10_transceiver_pll_10g