////////////////////////////////////////////////////////////////////// //// //// //// SBOX 4 //// //// //// //// This file is part of the SystemC DES //// //// //// //// Description: //// //// Sbox of DES algorithm //// //// //// //// Generated automatically using SystemC to Verilog translator //// //// //// //// To Do: //// //// - done //// //// //// //// Author(s): //// //// - Javier Castillo, jcastilo@opencores.org //// //// //// ////////////////////////////////////////////////////////////////////// //// //// //// Copyright (C) 2000 Authors and OPENCORES.ORG //// //// //// //// This source file may be used and distributed without //// //// restriction provided that this copyright statement is not //// //// removed from the file and that any derivative work contains //// //// the original copyright notice and the associated disclaimer. //// //// //// //// This source file is free software; you can redistribute it //// //// and/or modify it under the terms of the GNU Lesser General //// //// Public License as published by the Free Software Foundation; //// //// either version 2.1 of the License, or (at your option) any //// //// later version. //// //// //// //// This source is distributed in the hope that it will be //// //// useful, but WITHOUT ANY WARRANTY; without even the implied //// //// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //// //// PURPOSE. See the GNU Lesser General Public License for more //// //// details. //// //// //// //// You should have received a copy of the GNU Lesser General //// //// Public License along with this source; if not, download it //// //// from http://www.opencores.org/lgpl.shtml //// //// //// ////////////////////////////////////////////////////////////////////// // // CVS Revision History // // $Log: s4.v,v $ // Revision 1.1.1.1 2004/07/05 17:31:17 jcastillo // First import // module s4(stage1_input,stage1_output); input [5:0] stage1_input; output [3:0] stage1_output; reg [3:0] stage1_output; always @( stage1_input) begin case(stage1_input) 0: stage1_output = (7); 1: stage1_output = (13); 2: stage1_output = (13); 3: stage1_output = (8); 4: stage1_output = (14); 5: stage1_output = (11); 6: stage1_output = (3); 7: stage1_output = (5); 8: stage1_output = (0); 9: stage1_output = (6); 10: stage1_output = (6); 11: stage1_output = (15); 12: stage1_output = (9); 13: stage1_output = (0); 14: stage1_output = (10); 15: stage1_output = (3); 16: stage1_output = (1); 17: stage1_output = (4); 18: stage1_output = (2); 19: stage1_output = (7); 20: stage1_output = (8); 21: stage1_output = (2); 22: stage1_output = (5); 23: stage1_output = (12); 24: stage1_output = (11); 25: stage1_output = (1); 26: stage1_output = (12); 27: stage1_output = (10); 28: stage1_output = (4); 29: stage1_output = (14); 30: stage1_output = (15); 31: stage1_output = (9); 32: stage1_output = (10); 33: stage1_output = (3); 34: stage1_output = (6); 35: stage1_output = (15); 36: stage1_output = (9); 37: stage1_output = (0); 38: stage1_output = (0); 39: stage1_output = (6); 40: stage1_output = (12); 41: stage1_output = (10); 42: stage1_output = (11); 43: stage1_output = (1); 44: stage1_output = (7); 45: stage1_output = (13); 46: stage1_output = (13); 47: stage1_output = (8); 48: stage1_output = (15); 49: stage1_output = (9); 50: stage1_output = (1); 51: stage1_output = (4); 52: stage1_output = (3); 53: stage1_output = (5); 54: stage1_output = (14); 55: stage1_output = (11); 56: stage1_output = (5); 57: stage1_output = (12); 58: stage1_output = (2); 59: stage1_output = (7); 60: stage1_output = (8); 61: stage1_output = (2); 62: stage1_output = (4); 63: stage1_output = (14); endcase end endmodule