| 1 | // ========== Copyright Header Begin ========================================== |
| 2 | // |
| 3 | // OpenSPARC T2 Processor File: fflp_CRC16_D64.v |
| 4 | // Copyright (C) 1995-2007 Sun Microsystems, Inc. All Rights Reserved |
| 5 | // 4150 Network Circle, Santa Clara, California 95054, U.S.A. |
| 6 | // |
| 7 | // * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 8 | // |
| 9 | // This program is free software; you can redistribute it and/or modify |
| 10 | // it under the terms of the GNU General Public License as published by |
| 11 | // the Free Software Foundation; version 2 of the License. |
| 12 | // |
| 13 | // This program is distributed in the hope that it will be useful, |
| 14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | // GNU General Public License for more details. |
| 17 | // |
| 18 | // You should have received a copy of the GNU General Public License |
| 19 | // along with this program; if not, write to the Free Software |
| 20 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | // |
| 22 | // For the avoidance of doubt, and except that if any non-GPL license |
| 23 | // choice is available it will apply instead, Sun elects to use only |
| 24 | // the General Public License version 2 (GPLv2) at this time for any |
| 25 | // software where a choice of GPL license versions is made |
| 26 | // available with the language indicating that GPLv2 or any later version |
| 27 | // may be used, or where a choice of which version of the GPL is applied is |
| 28 | // otherwise unspecified. |
| 29 | // |
| 30 | // Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 31 | // CA 95054 USA or visit www.sun.com if you need additional information or |
| 32 | // have any questions. |
| 33 | // |
| 34 | // ========== Copyright Header End ============================================ |
| 35 | |
| 36 | module fflp_CRC16_D64 (Data, CRC, NewCRC); |
| 37 | |
| 38 | // polynomial: (0 5 12 16) |
| 39 | // data width: 64 |
| 40 | // convention: the first serial data bit is D[63] |
| 41 | // function [15:0] nextCRC16_D64; |
| 42 | |
| 43 | input [63:0] Data; |
| 44 | input [15:0] CRC; |
| 45 | |
| 46 | output[15:0] NewCRC; |
| 47 | |
| 48 | wire [63:0] D; |
| 49 | wire [15:0] C; |
| 50 | wire [15:0] NewCRC; |
| 51 | |
| 52 | assign D = Data; |
| 53 | assign C = CRC; |
| 54 | |
| 55 | assign NewCRC[0] = D[63] ^ D[58] ^ D[56] ^ D[55] ^ D[52] ^ D[51] ^ D[49] ^ |
| 56 | D[48] ^ D[42] ^ D[35] ^ D[33] ^ D[32] ^ D[28] ^ D[27] ^ |
| 57 | D[26] ^ D[22] ^ D[20] ^ D[19] ^ D[12] ^ D[11] ^ D[8] ^ |
| 58 | D[4] ^ D[0] ^ C[0] ^ C[1] ^ C[3] ^ C[4] ^ C[7] ^ C[8] ^ |
| 59 | C[10] ^ C[15]; |
| 60 | assign NewCRC[1] = D[59] ^ D[57] ^ D[56] ^ D[53] ^ D[52] ^ D[50] ^ D[49] ^ |
| 61 | D[43] ^ D[36] ^ D[34] ^ D[33] ^ D[29] ^ D[28] ^ D[27] ^ |
| 62 | D[23] ^ D[21] ^ D[20] ^ D[13] ^ D[12] ^ D[9] ^ D[5] ^ |
| 63 | D[1] ^ C[1] ^ C[2] ^ C[4] ^ C[5] ^ C[8] ^ C[9] ^ C[11]; |
| 64 | assign NewCRC[2] = D[60] ^ D[58] ^ D[57] ^ D[54] ^ D[53] ^ D[51] ^ D[50] ^ |
| 65 | D[44] ^ D[37] ^ D[35] ^ D[34] ^ D[30] ^ D[29] ^ D[28] ^ |
| 66 | D[24] ^ D[22] ^ D[21] ^ D[14] ^ D[13] ^ D[10] ^ D[6] ^ |
| 67 | D[2] ^ C[2] ^ C[3] ^ C[5] ^ C[6] ^ C[9] ^ C[10] ^ C[12]; |
| 68 | assign NewCRC[3] = D[61] ^ D[59] ^ D[58] ^ D[55] ^ D[54] ^ D[52] ^ D[51] ^ |
| 69 | D[45] ^ D[38] ^ D[36] ^ D[35] ^ D[31] ^ D[30] ^ D[29] ^ |
| 70 | D[25] ^ D[23] ^ D[22] ^ D[15] ^ D[14] ^ D[11] ^ D[7] ^ |
| 71 | D[3] ^ C[3] ^ C[4] ^ C[6] ^ C[7] ^ C[10] ^ C[11] ^ |
| 72 | C[13]; |
| 73 | assign NewCRC[4] = D[62] ^ D[60] ^ D[59] ^ D[56] ^ D[55] ^ D[53] ^ D[52] ^ |
| 74 | D[46] ^ D[39] ^ D[37] ^ D[36] ^ D[32] ^ D[31] ^ D[30] ^ |
| 75 | D[26] ^ D[24] ^ D[23] ^ D[16] ^ D[15] ^ D[12] ^ D[8] ^ |
| 76 | D[4] ^ C[4] ^ C[5] ^ C[7] ^ C[8] ^ C[11] ^ C[12] ^ |
| 77 | C[14]; |
| 78 | assign NewCRC[5] = D[61] ^ D[60] ^ D[58] ^ D[57] ^ D[55] ^ D[54] ^ D[53] ^ |
| 79 | D[52] ^ D[51] ^ D[49] ^ D[48] ^ D[47] ^ D[42] ^ D[40] ^ |
| 80 | D[38] ^ D[37] ^ D[35] ^ D[31] ^ D[28] ^ D[26] ^ D[25] ^ |
| 81 | D[24] ^ D[22] ^ D[20] ^ D[19] ^ D[17] ^ D[16] ^ D[13] ^ |
| 82 | D[12] ^ D[11] ^ D[9] ^ D[8] ^ D[5] ^ D[4] ^ D[0] ^ |
| 83 | C[0] ^ C[1] ^ C[3] ^ C[4] ^ C[5] ^ C[6] ^ C[7] ^ C[9] ^ |
| 84 | C[10] ^ C[12] ^ C[13]; |
| 85 | assign NewCRC[6] = D[62] ^ D[61] ^ D[59] ^ D[58] ^ D[56] ^ D[55] ^ D[54] ^ |
| 86 | D[53] ^ D[52] ^ D[50] ^ D[49] ^ D[48] ^ D[43] ^ D[41] ^ |
| 87 | D[39] ^ D[38] ^ D[36] ^ D[32] ^ D[29] ^ D[27] ^ D[26] ^ |
| 88 | D[25] ^ D[23] ^ D[21] ^ D[20] ^ D[18] ^ D[17] ^ D[14] ^ |
| 89 | D[13] ^ D[12] ^ D[10] ^ D[9] ^ D[6] ^ D[5] ^ D[1] ^ |
| 90 | C[0] ^ C[1] ^ C[2] ^ C[4] ^ C[5] ^ C[6] ^ C[7] ^ C[8] ^ |
| 91 | C[10] ^ C[11] ^ C[13] ^ C[14]; |
| 92 | assign NewCRC[7] = D[63] ^ D[62] ^ D[60] ^ D[59] ^ D[57] ^ D[56] ^ D[55] ^ |
| 93 | D[54] ^ D[53] ^ D[51] ^ D[50] ^ D[49] ^ D[44] ^ D[42] ^ |
| 94 | D[40] ^ D[39] ^ D[37] ^ D[33] ^ D[30] ^ D[28] ^ D[27] ^ |
| 95 | D[26] ^ D[24] ^ D[22] ^ D[21] ^ D[19] ^ D[18] ^ D[15] ^ |
| 96 | D[14] ^ D[13] ^ D[11] ^ D[10] ^ D[7] ^ D[6] ^ D[2] ^ |
| 97 | C[1] ^ C[2] ^ C[3] ^ C[5] ^ C[6] ^ C[7] ^ C[8] ^ C[9] ^ |
| 98 | C[11] ^ C[12] ^ C[14] ^ C[15]; |
| 99 | assign NewCRC[8] = D[63] ^ D[61] ^ D[60] ^ D[58] ^ D[57] ^ D[56] ^ D[55] ^ |
| 100 | D[54] ^ D[52] ^ D[51] ^ D[50] ^ D[45] ^ D[43] ^ D[41] ^ |
| 101 | D[40] ^ D[38] ^ D[34] ^ D[31] ^ D[29] ^ D[28] ^ D[27] ^ |
| 102 | D[25] ^ D[23] ^ D[22] ^ D[20] ^ D[19] ^ D[16] ^ D[15] ^ |
| 103 | D[14] ^ D[12] ^ D[11] ^ D[8] ^ D[7] ^ D[3] ^ C[2] ^ |
| 104 | C[3] ^ C[4] ^ C[6] ^ C[7] ^ C[8] ^ C[9] ^ C[10] ^ C[12] ^ |
| 105 | C[13] ^ C[15]; |
| 106 | assign NewCRC[9] = D[62] ^ D[61] ^ D[59] ^ D[58] ^ D[57] ^ D[56] ^ D[55] ^ |
| 107 | D[53] ^ D[52] ^ D[51] ^ D[46] ^ D[44] ^ D[42] ^ D[41] ^ |
| 108 | D[39] ^ D[35] ^ D[32] ^ D[30] ^ D[29] ^ D[28] ^ D[26] ^ |
| 109 | D[24] ^ D[23] ^ D[21] ^ D[20] ^ D[17] ^ D[16] ^ D[15] ^ |
| 110 | D[13] ^ D[12] ^ D[9] ^ D[8] ^ D[4] ^ C[3] ^ C[4] ^ |
| 111 | C[5] ^ C[7] ^ C[8] ^ C[9] ^ C[10] ^ C[11] ^ C[13] ^ |
| 112 | C[14]; |
| 113 | assign NewCRC[10] = D[63] ^ D[62] ^ D[60] ^ D[59] ^ D[58] ^ D[57] ^ D[56] ^ |
| 114 | D[54] ^ D[53] ^ D[52] ^ D[47] ^ D[45] ^ D[43] ^ D[42] ^ |
| 115 | D[40] ^ D[36] ^ D[33] ^ D[31] ^ D[30] ^ D[29] ^ D[27] ^ |
| 116 | D[25] ^ D[24] ^ D[22] ^ D[21] ^ D[18] ^ D[17] ^ D[16] ^ |
| 117 | D[14] ^ D[13] ^ D[10] ^ D[9] ^ D[5] ^ C[4] ^ C[5] ^ |
| 118 | C[6] ^ C[8] ^ C[9] ^ C[10] ^ C[11] ^ C[12] ^ C[14] ^ |
| 119 | C[15]; |
| 120 | assign NewCRC[11] = D[63] ^ D[61] ^ D[60] ^ D[59] ^ D[58] ^ D[57] ^ D[55] ^ |
| 121 | D[54] ^ D[53] ^ D[48] ^ D[46] ^ D[44] ^ D[43] ^ D[41] ^ |
| 122 | D[37] ^ D[34] ^ D[32] ^ D[31] ^ D[30] ^ D[28] ^ D[26] ^ |
| 123 | D[25] ^ D[23] ^ D[22] ^ D[19] ^ D[18] ^ D[17] ^ D[15] ^ |
| 124 | D[14] ^ D[11] ^ D[10] ^ D[6] ^ C[0] ^ C[5] ^ C[6] ^ |
| 125 | C[7] ^ C[9] ^ C[10] ^ C[11] ^ C[12] ^ C[13] ^ C[15]; |
| 126 | assign NewCRC[12] = D[63] ^ D[62] ^ D[61] ^ D[60] ^ D[59] ^ D[54] ^ D[52] ^ |
| 127 | D[51] ^ D[48] ^ D[47] ^ D[45] ^ D[44] ^ D[38] ^ D[31] ^ |
| 128 | D[29] ^ D[28] ^ D[24] ^ D[23] ^ D[22] ^ D[18] ^ D[16] ^ |
| 129 | D[15] ^ D[8] ^ D[7] ^ D[4] ^ D[0] ^ C[0] ^ C[3] ^ C[4] ^ |
| 130 | C[6] ^ C[11] ^ C[12] ^ C[13] ^ C[14] ^ C[15]; |
| 131 | assign NewCRC[13] = D[63] ^ D[62] ^ D[61] ^ D[60] ^ D[55] ^ D[53] ^ D[52] ^ |
| 132 | D[49] ^ D[48] ^ D[46] ^ D[45] ^ D[39] ^ D[32] ^ D[30] ^ |
| 133 | D[29] ^ D[25] ^ D[24] ^ D[23] ^ D[19] ^ D[17] ^ D[16] ^ |
| 134 | D[9] ^ D[8] ^ D[5] ^ D[1] ^ C[0] ^ C[1] ^ C[4] ^ C[5] ^ |
| 135 | C[7] ^ C[12] ^ C[13] ^ C[14] ^ C[15]; |
| 136 | assign NewCRC[14] = D[63] ^ D[62] ^ D[61] ^ D[56] ^ D[54] ^ D[53] ^ D[50] ^ |
| 137 | D[49] ^ D[47] ^ D[46] ^ D[40] ^ D[33] ^ D[31] ^ D[30] ^ |
| 138 | D[26] ^ D[25] ^ D[24] ^ D[20] ^ D[18] ^ D[17] ^ D[10] ^ |
| 139 | D[9] ^ D[6] ^ D[2] ^ C[1] ^ C[2] ^ C[5] ^ C[6] ^ C[8] ^ |
| 140 | C[13] ^ C[14] ^ C[15]; |
| 141 | assign NewCRC[15] = D[63] ^ D[62] ^ D[57] ^ D[55] ^ D[54] ^ D[51] ^ D[50] ^ |
| 142 | D[48] ^ D[47] ^ D[41] ^ D[34] ^ D[32] ^ D[31] ^ D[27] ^ |
| 143 | D[26] ^ D[25] ^ D[21] ^ D[19] ^ D[18] ^ D[11] ^ D[10] ^ |
| 144 | D[7] ^ D[3] ^ C[0] ^ C[2] ^ C[3] ^ C[6] ^ C[7] ^ C[9] ^ |
| 145 | C[14] ^ C[15]; |
| 146 | |
| 147 | endmodule |
| 148 | |