| 1 | // ========== Copyright Header Begin ========================================== |
| 2 | // |
| 3 | // OpenSPARC T2 Processor File: niu_smx_ecc16_corr.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. |
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| 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 | module niu_smx_ecc16_corr ( |
| 36 | enable, |
| 37 | data, |
| 38 | syn, |
| 39 | corr_data, |
| 40 | good, |
| 41 | corr_error, |
| 42 | uncorr_error); |
| 43 | |
| 44 | input enable; |
| 45 | input [15:0] data; |
| 46 | input [5:0] syn; |
| 47 | output [15:0] corr_data; |
| 48 | output good; |
| 49 | output corr_error; |
| 50 | output uncorr_error; |
| 51 | |
| 52 | wire [15:0] ecc_corr_data; |
| 53 | |
| 54 | assign ecc_corr_data[0] = data[0] ^ (syn[4:0] == 5'd3); |
| 55 | assign ecc_corr_data[1] = data[1] ^ (syn[4:0] == 5'd5); |
| 56 | assign ecc_corr_data[2] = data[2] ^ (syn[4:0] == 5'd6); |
| 57 | assign ecc_corr_data[3] = data[3] ^ (syn[4:0] == 5'd7); |
| 58 | assign ecc_corr_data[4] = data[4] ^ (syn[4:0] == 5'd9); |
| 59 | assign ecc_corr_data[5] = data[5] ^ (syn[4:0] == 5'd10); |
| 60 | assign ecc_corr_data[6] = data[6] ^ (syn[4:0] == 5'd11); |
| 61 | assign ecc_corr_data[7] = data[7] ^ (syn[4:0] == 5'd12); |
| 62 | assign ecc_corr_data[8] = data[8] ^ (syn[4:0] == 5'd13); |
| 63 | assign ecc_corr_data[9] = data[9] ^ (syn[4:0] == 5'd14); |
| 64 | assign ecc_corr_data[10] = data[10] ^ (syn[4:0] == 5'd15); |
| 65 | assign ecc_corr_data[11] = data[11] ^ (syn[4:0] == 5'd17); |
| 66 | assign ecc_corr_data[12] = data[12] ^ (syn[4:0] == 5'd18); |
| 67 | assign ecc_corr_data[13] = data[13] ^ (syn[4:0] == 5'd19); |
| 68 | assign ecc_corr_data[14] = data[14] ^ (syn[4:0] == 5'd20); |
| 69 | assign ecc_corr_data[15] = data[15] ^ (syn[4:0] == 5'd21); |
| 70 | |
| 71 | assign corr_data= (enable)? ecc_corr_data : data; |
| 72 | |
| 73 | assign good = (syn == 6'b000000); |
| 74 | assign corr_error = !(syn[4:0]>5'd21) && (syn[5] == 1'b1); |
| 75 | assign uncorr_error = ~corr_error & ~good; |
| 76 | endmodule |