| 1 | // ========== Copyright Header Begin ========================================== |
| 2 | // |
| 3 | // OpenSPARC T2 Processor File: n2_l2t_cmp_3bx2.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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| 33 | // |
| 34 | // ========== Copyright Header End ============================================ |
| 35 | module n2_l2t_cmp_3bx2 ( |
| 36 | sao_mx1_h, |
| 37 | sao_mx1_l, |
| 38 | sao_mx0_h, |
| 39 | sao_mx0_l, |
| 40 | lkuptag_d1, |
| 41 | l1clk_d, |
| 42 | w1_cmp3b, |
| 43 | w0_cmp3b) ; |
| 44 | |
| 45 | |
| 46 | input [2:0] sao_mx1_h; |
| 47 | input [2:0] sao_mx1_l; |
| 48 | input [2:0] sao_mx0_h; |
| 49 | input [2:0] sao_mx0_l; |
| 50 | input [2:0] lkuptag_d1; |
| 51 | input l1clk_d; |
| 52 | output w1_cmp3b; |
| 53 | output w0_cmp3b; |
| 54 | |
| 55 | reg w1_cmp3b; |
| 56 | reg w0_cmp3b; |
| 57 | |
| 58 | //Compare ouput is 0 for match and 1 for mismatch |
| 59 | |
| 60 | always @(l1clk_d or sao_mx1_h or sao_mx1_l or sao_mx0_h or sao_mx0_l or lkuptag_d1) |
| 61 | |
| 62 | if (l1clk_d) // Precharge mode |
| 63 | begin |
| 64 | w1_cmp3b = 1'b0; |
| 65 | w0_cmp3b = 1'b0; |
| 66 | end |
| 67 | else |
| 68 | if (~l1clk_d ) // Evaluation mode |
| 69 | begin |
| 70 | w1_cmp3b = (lkuptag_d1[2] && sao_mx1_l[2]) || (~lkuptag_d1[2] && sao_mx1_h[2]) || |
| 71 | (lkuptag_d1[1] && sao_mx1_l[1]) || (~lkuptag_d1[1] && sao_mx1_h[1]) || |
| 72 | (lkuptag_d1[0] && sao_mx1_l[0]) || (~lkuptag_d1[0] && sao_mx1_h[0]); |
| 73 | |
| 74 | w0_cmp3b = (lkuptag_d1[2] && sao_mx0_l[2]) || (~lkuptag_d1[2] && sao_mx0_h[2]) || |
| 75 | (lkuptag_d1[1] && sao_mx0_l[1]) || (~lkuptag_d1[1] && sao_mx0_h[1]) || |
| 76 | (lkuptag_d1[0] && sao_mx0_l[0]) || (~lkuptag_d1[0] && sao_mx0_h[0]); |
| 77 | end |
| 78 | |
| 79 | endmodule // n2_l2t_cmp_3bx2 |
| 80 | |