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[/] [sc2v/] [trunk/] [examples/] [rng.cpp] - Rev 36
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////////////////////////////////////////////////////////////////////// //// //// //// Random Number Generator Top //// //// //// //// This file is part of the SystemC RNG project //// //// //// //// Description: //// //// Top file of random number generator //// //// //// //// To Do: //// //// - nothing //// //// 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: not supported by cvs2svn $ // Revision 1.1.1.1 2004/10/08 14:04:10 jcastillo // First import // // Revision 1.2 2004/08/30 17:01:50 jcastillo // Used indent command // // Revision 1.1.1.1 2004/08/19 14:27:14 jcastillo // First import // #include "rng.h" void rng::combinate () { if (!reset.read ()) { number_o.write (0); } else { number_o.write (LFSR_reg.read ().range (31, 0) ^ CASR_reg.read ().range (31, 0)); } } void rng::LFSR () { sc_uint < 43 > LFSR_var; bool outbit; if (!reset.read ()) { LFSR_reg.write (1); } else { if (loadseed_i.read ()) { LFSR_var.range (42, 31) = 0; LFSR_var.range (31, 0) = seed_i.read (); LFSR_reg.write (LFSR_var); } else { LFSR_var = LFSR_reg.read (); outbit = LFSR_var[42]; LFSR_var[42] = LFSR_var[41]; LFSR_var[41] = LFSR_var[40] ^ outbit; LFSR_var[40] = LFSR_var[39]; LFSR_var[39] = LFSR_var[38]; LFSR_var[38] = LFSR_var[37]; LFSR_var[37] = LFSR_var[36]; LFSR_var[36] = LFSR_var[35]; LFSR_var[35] = LFSR_var[34]; LFSR_var[34] = LFSR_var[33]; LFSR_var[33] = LFSR_var[32]; LFSR_var[32] = LFSR_var[31]; LFSR_var[31] = LFSR_var[30]; LFSR_var[30] = LFSR_var[29]; LFSR_var[29] = LFSR_var[28]; LFSR_var[28] = LFSR_var[27]; LFSR_var[27] = LFSR_var[26]; LFSR_var[26] = LFSR_var[25]; LFSR_var[25] = LFSR_var[24]; LFSR_var[24] = LFSR_var[23]; LFSR_var[23] = LFSR_var[22]; LFSR_var[22] = LFSR_var[21]; LFSR_var[21] = LFSR_var[20]; LFSR_var[20] = LFSR_var[19] ^ outbit; LFSR_var[19] = LFSR_var[18]; LFSR_var[18] = LFSR_var[17]; LFSR_var[17] = LFSR_var[16]; LFSR_var[16] = LFSR_var[15]; LFSR_var[15] = LFSR_var[14]; LFSR_var[14] = LFSR_var[13]; LFSR_var[13] = LFSR_var[12]; LFSR_var[12] = LFSR_var[11]; LFSR_var[11] = LFSR_var[10]; LFSR_var[10] = LFSR_var[9]; LFSR_var[9] = LFSR_var[8]; LFSR_var[8] = LFSR_var[7]; LFSR_var[7] = LFSR_var[6]; LFSR_var[6] = LFSR_var[5]; LFSR_var[5] = LFSR_var[4]; LFSR_var[4] = LFSR_var[3]; LFSR_var[3] = LFSR_var[2]; LFSR_var[2] = LFSR_var[1]; LFSR_var[1] = LFSR_var[0] ^ outbit; LFSR_var[0] = LFSR_var[42]; LFSR_reg.write (LFSR_var); } } } void rng::CASR () { sc_uint < 43 > CASR_var, CASR_out; if (!reset.read ()) { CASR_reg.write (1); } else { if (loadseed_i.read ()) { CASR_var.range (36, 31) = 0; CASR_var.range (31, 0) = seed_i.read (); CASR_reg.write (CASR_var); } else { CASR_var = CASR_reg.read (); CASR_out[36] = CASR_var[35] ^ CASR_var[0]; CASR_out[35] = CASR_var[34] ^ CASR_var[36]; CASR_out[34] = CASR_var[33] ^ CASR_var[35]; CASR_out[33] = CASR_var[32] ^ CASR_var[34]; CASR_out[32] = CASR_var[31] ^ CASR_var[33]; CASR_out[31] = CASR_var[30] ^ CASR_var[32]; CASR_out[30] = CASR_var[29] ^ CASR_var[31]; CASR_out[29] = CASR_var[28] ^ CASR_var[30]; CASR_out[28] = CASR_var[27] ^ CASR_var[29]; CASR_out[27] = CASR_var[26] ^ CASR_var[28]; CASR_out[26] = CASR_var[25] ^ CASR_var[27]; CASR_out[25] = CASR_var[24] ^ CASR_var[26]; CASR_out[24] = CASR_var[23] ^ CASR_var[25]; CASR_out[23] = CASR_var[22] ^ CASR_var[24]; CASR_out[22] = CASR_var[21] ^ CASR_var[23]; CASR_out[21] = CASR_var[20] ^ CASR_var[22]; CASR_out[20] = CASR_var[19] ^ CASR_var[21]; CASR_out[19] = CASR_var[18] ^ CASR_var[20]; CASR_out[18] = CASR_var[17] ^ CASR_var[19]; CASR_out[17] = CASR_var[16] ^ CASR_var[18]; CASR_out[16] = CASR_var[15] ^ CASR_var[17]; CASR_out[15] = CASR_var[14] ^ CASR_var[16]; CASR_out[14] = CASR_var[13] ^ CASR_var[15]; CASR_out[13] = CASR_var[12] ^ CASR_var[14]; CASR_out[12] = CASR_var[11] ^ CASR_var[13]; CASR_out[11] = CASR_var[10] ^ CASR_var[12]; CASR_out[10] = CASR_var[9] ^ CASR_var[11]; CASR_out[9] = CASR_var[8] ^ CASR_var[10]; CASR_out[8] = CASR_var[7] ^ CASR_var[9]; CASR_out[7] = CASR_var[6] ^ CASR_var[8]; CASR_out[6] = CASR_var[5] ^ CASR_var[7]; CASR_out[5] = CASR_var[4] ^ CASR_var[6]; CASR_out[4] = CASR_var[3] ^ CASR_var[5]; CASR_out[3] = CASR_var[2] ^ CASR_var[4]; CASR_out[2] = CASR_var[1] ^ CASR_var[3]; CASR_out[1] = CASR_var[0] ^ CASR_var[2]; CASR_out[0] = CASR_var[36] ^ CASR_var[1]; CASR_reg.write (CASR_out); } } }