Subversion Repositories tv80

  wire   nwintf_sel = !iorq_n & (A[7:3] == 5'b00001);

  wire [7:0] rx_data, tx_data;

  wire       rx_clk, rx_dv, rx_er;

  wire       tx_dv, tx_er;

  wire       tx_clk;

  wire [7:0] nw_data_out;

  // loopback config

  assign     rx_data = tx_data;

  assign     rx_dv = tx_dv;

  assign     rx_er = tx_er;

  assign     rx_clk = tx_clk;

  assign     di = (nwintf_sel & !rd_n) ? nw_data_out : 8'bz;

  simple_gmii nwintf

    (

     // Outputs

     .tx_dv                             (tx_dv),

     .tx_er                             (tx_er),

     .tx_data                           (tx_data),

     .tx_clk                            (tx_clk),

     .io_data_out                       (nw_data_out),

     // Inputs

     .clk                               (clk),

     .reset                             (!reset_n),

     .rx_data                           (rx_data),

     .rx_clk                            (rx_clk),

     .rx_dv                             (rx_dv),

     .rx_er                             (rx_er),

     .io_select                         (nwintf_sel),

     .rd_n                              (rd_n),

     .wr_n                              (wr_n),

     .io_addr                           (A[2:0]),

     .io_data_in                        (do));