| // ========== Copyright Header Begin ========================================== |
| // |
| // OpenSPARC T1 Processor File: fpu_in2_gt_in1_2b.v |
| // Copyright (c) 2006 Sun Microsystems, Inc. All Rights Reserved. |
| // DO NOT ALTER OR REMOVE COPYRIGHT NOTICES. |
| // |
| // The above named program is free software; you can redistribute it and/or |
| // modify it under the terms of the GNU General Public |
| // License version 2 as published by the Free Software Foundation. |
| // |
| // The above named program is distributed in the hope that it will be |
| // useful, but WITHOUT ANY WARRANTY; without even the implied warranty of |
| // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| // General Public License for more details. |
| // |
| // You should have received a copy of the GNU General Public |
| // License along with this work; if not, write to the Free Software |
| // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA. |
| // |
| // ========== Copyright Header End ============================================ |
| /////////////////////////////////////////////////////////////////////////////// |
| // |
| // Two bit comparison of two inputs that can have any value. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| module fpu_in2_gt_in1_2b ( |
| din1, |
| din2, |
| |
| din2_neq_din1, |
| din2_gt_din1 |
| ); |
| |
| |
| input [1:0] din1; // input 1- 3 bits |
| input [1:0] din2; // input 2- 3 bits |
| |
| output din2_neq_din1; // input 2 doesn't equal input 1 |
| output din2_gt_din1; // input 2 is greater than input 1 |
| |
| |
| wire [1:0] din2_eq_din1; |
| wire din2_neq_din1; |
| wire din2_gt_din1; |
| |
| |
| assign din2_eq_din1[1:0]= (~(din1 ^ din2)); |
| |
| assign din2_neq_din1= (!(&din2_eq_din1)); |
| |
| assign din2_gt_din1= ((!din1[1]) && din2[1]) |
| || (din2_eq_din1[1] && (!din1[0]) && din2[0]); |
| |
| |
| endmodule |
| |
| |