Subversion Repositories sv_dir_tb

/////////////////////////////////////////////////////////////////

//   Copyright  2014 Ken Campbell

//

//   Licensed under the Apache License, Version 2.0 (the "License");

//   you may not use this file except in compliance with the License.

//   You may obtain a copy of the License at

//

//     http://www.apache.org/licenses/LICENSE-2.0

//

//   Unless required by applicable law or agreed to in writing, software

//   distributed under the License is distributed on an "AS IS" BASIS,

//   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

//   See the License for the specific language governing permissions and

//   limitations under the License.

//

//   test bench module file  template.

////////////////////////////////////////////////////////////////

>>header

//  The package.

  `include "../sv/tb_pkg.sv"

module tb_mod (dut_if.tb_conn tif);

  import tb_pkg::*;

  //  package and container

  cmd_lst  cmds;

  tb_trans r;

  integer  in_fh;

  integer  stat;

  logic    clock;

  //////////////////////////////////////////////

  //   DUT signals

>>insert sigs

  ////////////////////////////////////////////////////////

  //  drive DUT  signals through interface

>>drive sigs

  ////////////////////////////////////////////////////

  //  instruction variables

  integer  was_def     = 0;

  string   cmd_string;

  logic  [31:0]  tmp_vec;

  ////////////////////////////////////////////////////////////////////

  //   clock driver

  initial begin

    while(1) begin

      #10 clock = 0;

      #10 clock = 1;

    end

  end

  //////////////////////////////////////////////////////////

  //  stimulus_file processing

  initial begin : Process_STM

    cmds = new();

    r    = new();

    //  define the default instructions

    cmds.define_defaults();

    //  User instructions

    cmds.define_instruction("RESET", 0);

    //cmds.define_instruction("READ", 1);

    //cmds.define_instruction("WRITE", 2);

    //cmds.define_instruction("VERIFY", 1);

    //  load the stimulus file

    cmds.load_stm(`STM_FILE);

    r.cmd = cmds;

    /////////////////////////////////////////////////////

    //  the main loop.

    while (r.cmd != null) begin

      r      = r.cmd.get(r);

      r.next++;

      //  process default instructions

      was_def  =  r.cmd.exec_defaults(r);

      if(was_def) begin

        continue;

      end

      ///////////////////////////////////////////////////////

      //   Process User  instructions.

      // get the command string

      cmd_string = r.cmd.lst_cmds.cmd;

      //  output the dynamic text if there is some. (Note:  before command runs.)

      r.cmd.print_str_wvar();

      ///////////////////////////////////////////////////////////////////////////

      //  RESET

      if (cmd_string == "RESET") begin

        @(posedge clock)

      ///////////////////////////////////////////////////////////////////////////

      //  READ

      //end else if (cmd_string == "READ") begin

      //  @(posedge clock)

      ///////////////////////////////////////////////////////////////////////////

      //  WRITE

      //end else if (cmd_string == "WRITE") begin

      //////////////////////////////////////////////////////////////////////////

      //  VERIFY

      //end else if (cmd_string == "VERIFY") begin

      //  verify_command : assert (tmp_vec == r.rtn_val.par1) else begin

      //    $fatal(0,"VERIFY failed expected: %x  Got: %x", r.rtn_val.par1, tmp_vec);

      //  end

      end else begin

        $display("ERROR:  Command not found in the else if chain. Is it spelled correctly in the else if?");

      end //  end of else if chain

    end  //  end main while loop

    //  should never end up outside the while loop.

    $display("ERROR:  Some how, a run off the beginning or end of the instruction sequence, has not been caught!!");

  end   //  end Process_STM

endmodule // tb_mod