8bitworkshop/test/cli/verilog/t_tri_ifbegin.v

// DESCRIPTION: Verilator: Verilog Test module
// This file ONLY is placed under the Creative Commons Public Domain, for
// any use, without warranty, 2020 by Wilson Snyder.
// SPDX-License-Identifier: CC0-1.0

module t (/*AUTOARG*/
   // Inputs
   clk
   );
   input clk;

   tri   pad_io_h;
   tri   pad_io_l;

   sub sub (.*);

endmodule


module sub (/*AUTOARG*/
   // Inouts
   pad_io_h, pad_io_l
   );

   parameter USE = 1'b1;
   parameter DIFFERENTIAL = 1'b1;
   parameter BIDIR = 1'b1;

   inout pad_io_h;
   inout pad_io_l;

   wire [31:0] dqs_out_dtap_delay;

   generate
      if (USE) begin: output_strobe
         wire aligned_os_oe;
         wire aligned_strobe;

         if (BIDIR) begin
            reg sig_h_r = 1'b0;
            reg sig_l_r = 1'b0;
            always @* begin
               sig_h_r = ~aligned_os_oe ? aligned_strobe : 1'bz;
               if (DIFFERENTIAL)
                 sig_l_r = ~aligned_os_oe ? ~aligned_strobe : 1'bz;
            end
            assign pad_io_h = sig_h_r;
            if (DIFFERENTIAL)
              assign pad_io_l = sig_l_r;
         end
      end
   endgenerate

endmodule