| 1 | // ========== Copyright Header Begin ========================================== |
| 2 | // |
| 3 | // OpenSPARC T2 Processor File: niu_60data_ecc_generate.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 |
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| 31 | // CA 95054 USA or visit www.sun.com if you need additional information or |
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| 34 | // ========== Copyright Header End ============================================ |
| 35 | `timescale 1ns/1ns |
| 36 | // **************************************************************************** |
| 37 | // Copyright (c) 2002 by Sun Microsystems Inc. |
| 38 | // |
| 39 | // All rights reserved. No part of this design may be reproduced stored |
| 40 | // in a retrieval system, or transmitted, in any form or by any means, |
| 41 | // electronic, mechanical, photocopying, recording, or otherwise, without |
| 42 | // prior written permission of Sun Microsystems, Inc. |
| 43 | // |
| 44 | // Sun Proprietary/Confidential |
| 45 | // |
| 46 | // **************************************************************************** |
| 47 | // File Name : niu_60data_ecc_generate.sv |
| 48 | // Version : /main/1 |
| 49 | // Last Update : 08/10/04 15:26:16 loj |
| 50 | // **************************************************************************** |
| 51 | // Module : niu_60data_ecc_generate |
| 52 | // Description : SEC-DED Checkbit Generation |
| 53 | // din[59:0] refers to data bits[59:0] |
| 54 | // For SEC and SEC-DED, dout[67:0] refers to |
| 55 | // {data bits[59:0], check bits[7:0]} if the -p switch |
| 56 | // is not set and {check bits[7:0]} if the -p switch is set. |
| 57 | // This module is used while writing data |
| 58 | // *************************************************************************** |
| 59 | // Revision History |
| 60 | // Date Author Description |
| 61 | // 08/10/04 loj Initial verilog generated from ECC automation script |
| 62 | // **************************************************************************** |
| 63 | |
| 64 | module niu_60data_ecc_generate (din, dout); |
| 65 | |
| 66 | input [59:0] din; |
| 67 | output [67:0] dout; |
| 68 | |
| 69 | wire [7:0] chk; |
| 70 | |
| 71 | assign chk[7] = din[57] ^ din[54] ^ din[52] ^ din[49] ^ din[47] ^ din[44] ^ din[41] ^ din[38] ^ din[35] ^ din[33] ^ din[31] ^ din[27] ^ din[25] ^ din[23] ^ din[19] ^ din[18] ^ din[14] ^ din[11] ^ din[10] ^ din[6] ^ din[5] ^ din[2] ^ din[0]; |
| 72 | assign chk[6] = din[57] ^ din[55] ^ din[52] ^ din[49] ^ din[46] ^ din[44] ^ din[42] ^ din[39] ^ din[36] ^ din[34] ^ din[30] ^ din[28] ^ din[26] ^ din[22] ^ din[20] ^ din[17] ^ din[14] ^ din[13] ^ din[9] ^ din[6] ^ din[4] ^ din[2] ^ din[1]; |
| 73 | assign chk[5] = din[58] ^ din[55] ^ din[52] ^ din[50] ^ din[47] ^ din[45] ^ din[41] ^ din[39] ^ din[36] ^ din[33] ^ din[31] ^ din[29] ^ din[25] ^ din[24] ^ din[21] ^ din[17] ^ din[16] ^ din[12] ^ din[9] ^ din[8] ^ din[7] ^ din[2] ^ din[1]; |
| 74 | assign chk[4] = din[58] ^ din[55] ^ din[53] ^ din[50] ^ din[47] ^ din[44] ^ din[43] ^ din[40] ^ din[37] ^ din[34] ^ din[32] ^ din[28] ^ din[26] ^ din[23] ^ din[20] ^ din[18] ^ din[15] ^ din[12] ^ din[11] ^ din[7] ^ din[5] ^ din[3] ^ din[1]; |
| 75 | assign chk[3] = din[58] ^ din[56] ^ din[53] ^ din[51] ^ din[48] ^ din[45] ^ din[42] ^ din[39] ^ din[37] ^ din[34] ^ din[31] ^ din[29] ^ din[27] ^ din[23] ^ din[22] ^ din[19] ^ din[15] ^ din[13] ^ din[10] ^ din[8] ^ din[6] ^ din[3] ^ din[1] ^ din[0]; |
| 76 | assign chk[2] = din[59] ^ din[56] ^ din[53] ^ din[50] ^ din[48] ^ din[45] ^ din[42] ^ din[40] ^ din[38] ^ din[35] ^ din[32] ^ din[30] ^ din[26] ^ din[25] ^ din[21] ^ din[18] ^ din[16] ^ din[14] ^ din[10] ^ din[9] ^ din[4] ^ din[3] ^ din[1] ^ din[0]; |
| 77 | assign chk[1] = din[59] ^ din[56] ^ din[54] ^ din[51] ^ din[49] ^ din[46] ^ din[43] ^ din[40] ^ din[37] ^ din[35] ^ din[33] ^ din[29] ^ din[27] ^ din[24] ^ din[21] ^ din[20] ^ din[17] ^ din[13] ^ din[11] ^ din[7] ^ din[4] ^ din[3] ^ din[2] ^ din[0]; |
| 78 | assign chk[0] = din[59] ^ din[57] ^ din[54] ^ din[51] ^ din[48] ^ din[46] ^ din[43] ^ din[41] ^ din[38] ^ din[36] ^ din[32] ^ din[30] ^ din[28] ^ din[24] ^ din[22] ^ din[19] ^ din[16] ^ din[15] ^ din[12] ^ din[8] ^ din[5] ^ din[3] ^ din[2] ^ din[0]; |
| 79 | |
| 80 | assign dout[67] = din[59]; |
| 81 | assign dout[66] = din[58]; |
| 82 | assign dout[65] = din[57]; |
| 83 | assign dout[64] = din[56]; |
| 84 | assign dout[63] = din[55]; |
| 85 | assign dout[62] = din[54]; |
| 86 | assign dout[61] = din[53]; |
| 87 | assign dout[60] = din[52]; |
| 88 | assign dout[59] = din[51]; |
| 89 | assign dout[58] = din[50]; |
| 90 | assign dout[57] = din[49]; |
| 91 | assign dout[56] = din[48]; |
| 92 | assign dout[55] = din[47]; |
| 93 | assign dout[54] = din[46]; |
| 94 | assign dout[53] = din[45]; |
| 95 | assign dout[52] = din[44]; |
| 96 | assign dout[51] = din[43]; |
| 97 | assign dout[50] = din[42]; |
| 98 | assign dout[49] = din[41]; |
| 99 | assign dout[48] = din[40]; |
| 100 | assign dout[47] = din[39]; |
| 101 | assign dout[46] = din[38]; |
| 102 | assign dout[45] = din[37]; |
| 103 | assign dout[44] = din[36]; |
| 104 | assign dout[43] = din[35]; |
| 105 | assign dout[42] = din[34]; |
| 106 | assign dout[41] = din[33]; |
| 107 | assign dout[40] = din[32]; |
| 108 | assign dout[39] = din[31]; |
| 109 | assign dout[38] = din[30]; |
| 110 | assign dout[37] = din[29]; |
| 111 | assign dout[36] = din[28]; |
| 112 | assign dout[35] = din[27]; |
| 113 | assign dout[34] = din[26]; |
| 114 | assign dout[33] = din[25]; |
| 115 | assign dout[32] = din[24]; |
| 116 | assign dout[31] = din[23]; |
| 117 | assign dout[30] = din[22]; |
| 118 | assign dout[29] = din[21]; |
| 119 | assign dout[28] = din[20]; |
| 120 | assign dout[27] = din[19]; |
| 121 | assign dout[26] = din[18]; |
| 122 | assign dout[25] = din[17]; |
| 123 | assign dout[24] = din[16]; |
| 124 | assign dout[23] = din[15]; |
| 125 | assign dout[22] = din[14]; |
| 126 | assign dout[21] = din[13]; |
| 127 | assign dout[20] = din[12]; |
| 128 | assign dout[19] = din[11]; |
| 129 | assign dout[18] = din[10]; |
| 130 | assign dout[17] = din[9]; |
| 131 | assign dout[16] = din[8]; |
| 132 | assign dout[15] = din[7]; |
| 133 | assign dout[14] = din[6]; |
| 134 | assign dout[13] = din[5]; |
| 135 | assign dout[12] = din[4]; |
| 136 | assign dout[11] = din[3]; |
| 137 | assign dout[10] = din[2]; |
| 138 | assign dout[9] = din[1]; |
| 139 | assign dout[8] = din[0]; |
| 140 | assign dout[7] = chk[7]; |
| 141 | assign dout[6] = chk[6]; |
| 142 | assign dout[5] = chk[5]; |
| 143 | assign dout[4] = chk[4]; |
| 144 | assign dout[3] = chk[3]; |
| 145 | assign dout[2] = chk[2]; |
| 146 | assign dout[1] = chk[1]; |
| 147 | assign dout[0] = chk[0]; |
| 148 | |
| 149 | |
| 150 | endmodule |