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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. | |
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 | 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 |