1Dgame/regfile.luc at main · iso2kx/1Dgame · GitHub

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module regfile (
    input clk,  // clock
    input rst,  // reset
    input read_address_a[4], //address port a
    input read_address_b[4], //address port b
    input write_address[16],
    input write_data[16],
    input write_enable,
    output read_data_a[16],
    output read_data_b[16],


    //debug
//    output level_out[16],
//    output row_out[16],
    output position_out[16],
    output last_row_out[16],
    output player_level_out[16],
    output player_row_out[16]

  ) {

  .clk(clk){
    .rst(rst){
      dff player_level[16](#INIT(b00000001));
      dff player_row[16](#INIT(0));
      dff player_position[16](#INIT(b00010000));
      dff mazeLastRow[16](#INIT(b00000000));
      dff temp_var[16];
    }
  }

  always {


    // write port
    if (write_enable){
      case(write_address){
        b0011 : player_level.d = write_data;
        b0010 : player_row.d = write_data;
        b0100 : player_position.d = write_data;
        b0101 : mazeLastRow.d = write_data;
        b1111 : temp_var.d = write_data;
      }
    }

      //read port a
      case(read_address_a){
        b0011 : read_data_a = player_level.q;
        b0010 : read_data_a = player_row.q;
        b0100 : read_data_a = player_position.q;
        b0101 : read_data_a = mazeLastRow.q;
        b1111 : read_data_a = temp_var.q;
        default : read_data_a = 0;
      }

      //read port b
      case(read_address_b){
        b0011 : read_data_b = player_level.q;
        b0010 : read_data_b = player_row.q;
        b0100 : read_data_b = player_position.q;
        b0101 : read_data_b = mazeLastRow.q;
        b1111 : read_data_b = temp_var.q;
        default : read_data_b = 0;
      }

      //For debugging
//      level_out = player_level.q;
//      row_out = player_row.q;
//      position_out = player_position.q;
      last_row_out = mazeLastRow.q;
      position_out = player_position.q;
      player_level_out = player_level.q;
      player_row_out = player_row.q;
    }
}