Imported Upstream version 3.0.3

[debian/gnuradio] / usrp / fpga / sdr_lib / tx_buffer.v

diff --git a/usrp/fpga/sdr_lib/tx_buffer.v b/usrp/fpga/sdr_lib/tx_buffer.v
index ff8fd839dc4d50b54f5dfb2c22e4e3a7ebb96b7f..63202c9df9b66bcc3d8a6f9239f51962559abdb9 100644 (file)
--- a/usrp/fpga/sdr_lib/tx_buffer.v
+++ b/usrp/fpga/sdr_lib/tx_buffer.v
@@ -66,20 +66,20 @@ module tx_buffer
          load_next <= #1 4'd0;
        end
      else
-       if((load_next != channels) & !tx_empty)
+       if(load_next != channels)
         begin
            load_next <= #1 load_next + 4'd1;
            case(load_next)
-             4'd0 : tx_i_0 <= #1 fifodata;
-             4'd1 : tx_q_0 <= #1 fifodata;
-             4'd2 : tx_i_1 <= #1 fifodata;
-             4'd3 : tx_q_1 <= #1 fifodata;
-             4'd4 : tx_i_2 <= #1 fifodata;
-             4'd5 : tx_q_2 <= #1 fifodata;
-             4'd6 : tx_i_3 <= #1 fifodata;
-             4'd7 : tx_q_3 <= #1 fifodata;
+             4'd0 : tx_i_0 <= #1 tx_empty ? 16'd0 : fifodata;
+             4'd1 : tx_q_0 <= #1 tx_empty ? 16'd0 : fifodata;
+             4'd2 : tx_i_1 <= #1 tx_empty ? 16'd0 : fifodata;
+             4'd3 : tx_q_1 <= #1 tx_empty ? 16'd0 : fifodata;
+             4'd4 : tx_i_2 <= #1 tx_empty ? 16'd0 : fifodata;
+             4'd5 : tx_q_2 <= #1 tx_empty ? 16'd0 : fifodata;
+             4'd6 : tx_i_3 <= #1 tx_empty ? 16'd0 : fifodata;
+             4'd7 : tx_q_3 <= #1 tx_empty ? 16'd0 : fifodata;
            endcase // case(load_next)
-        end // if ((load_next != channels) & !tx_empty)
+        end // if (load_next != channels)
        else if(txstrobe & (load_next == channels))
         begin
            load_next <= #1 4'd0;