fpga/mux16.v

   1 //-----------------------------------------------------------------------------
   2 // Copyright (C) Proxmark3 contributors. See AUTHORS.md for details.
   3 //
   4 // This program is free software: you can redistribute it and/or modify
   5 // it under the terms of the GNU General Public License as published by
   6 // the Free Software Foundation, either version 3 of the License, or
   7 // (at your option) any later version.
   8 //
   9 // This program is distributed in the hope that it will be useful,
  10 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 // GNU General Public License for more details.
  13 //
  14 // See LICENSE.txt for the text of the license.
  15 //-----------------------------------------------------------------------------
  16
  17 // 16 inputs to 1 output multiplexer
  18 module mux16(
  19     input [3:0] sel,
  20     output reg y,
  21     input x0, x1, x2, x3, x4, x5, x6, x7, x8, x9, x10, x11, x12, x13, x14, x15
  22 );
  23
  24 always @(*)
  25 begin
  26     // y = x[sel];
  27     case (sel)
  28         4'd0:  y = x0;
  29         4'd1:  y = x1;
  30         4'd2:  y = x2;
  31         4'd3:  y = x3;
  32         4'd4:  y = x4;
  33         4'd5:  y = x5;
  34         4'd6:  y = x6;
  35         4'd7:  y = x7;
  36         4'd8:  y = x8;
  37         4'd9:  y = x9;
  38         4'd10: y = x10;
  39         4'd11: y = x11;
  40         4'd12: y = x12;
  41         4'd13: y = x13;
  42         4'd14: y = x14;
  43         4'd15: y = x15;
  44     endcase
  45 end
  46
  47 endmodule