| | 1 | ////////////////////////////////////////////////////////////////////// |
| | 2 | //// //// |
| | 3 | //// File name "frame_crit.v" //// |
| | 4 | //// //// |
| | 5 | //// This file is part of the "PCI bridge" project //// |
| | 6 | //// http://www.opencores.org/cores/pci/ //// |
| | 7 | //// //// |
| | 8 | //// Author(s): //// |
| | 9 | //// - Miha Dolenc (mihad@opencores.org) //// |
| | 10 | //// //// |
| | 11 | //// All additional information is avaliable in the README //// |
| | 12 | //// file. //// |
| | 13 | //// //// |
| | 14 | //// //// |
| | 15 | ////////////////////////////////////////////////////////////////////// |
| | 16 | //// //// |
| | 17 | //// Copyright (C) 2001 Miha Dolenc, mihad@opencores.org //// |
| | 18 | //// //// |
| | 19 | //// This source file may be used and distributed without //// |
| | 20 | //// restriction provided that this copyright statement is not //// |
| | 21 | //// removed from the file and that any derivative work contains //// |
| | 22 | //// the original copyright notice and the associated disclaimer. //// |
| | 23 | //// //// |
| | 24 | //// This source file is free software; you can redistribute it //// |
| | 25 | //// and/or modify it under the terms of the GNU Lesser General //// |
| | 26 | //// Public License as published by the Free Software Foundation; //// |
| | 27 | //// either version 2.1 of the License, or (at your option) any //// |
| | 28 | //// later version. //// |
| | 29 | //// //// |
| | 30 | //// This source is distributed in the hope that it will be //// |
| | 31 | //// useful, but WITHOUT ANY WARRANTY; without even the implied //// |
| | 32 | //// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR //// |
| | 33 | //// PURPOSE. See the GNU Lesser General Public License for more //// |
| | 34 | //// details. //// |
| | 35 | //// //// |
| | 36 | //// You should have received a copy of the GNU Lesser General //// |
| | 37 | //// Public License along with this source; if not, download it //// |
| | 38 | //// from http://www.opencores.org/lgpl.shtml //// |
| | 39 | //// //// |
| | 40 | ////////////////////////////////////////////////////////////////////// |
| | 41 | // |
| | 42 | // CVS Revision History |
| | 43 | // |
| | 44 | // $Log: pci_frame_crit.v,v $ |
| | 45 | // Revision 1.1 2007-03-20 17:50:56 sithglan |
| | 46 | // add shit |
| | 47 | // |
| | 48 | // Revision 1.1 2003/01/27 16:49:31 mihad |
| | 49 | // Changed module and file names. Updated scripts accordingly. FIFO synchronizations changed. |
| | 50 | // |
| | 51 | // Revision 1.3 2002/02/01 15:25:12 mihad |
| | 52 | // Repaired a few bugs, updated specification, added test bench files and design document |
| | 53 | // |
| | 54 | // Revision 1.2 2001/10/05 08:14:28 mihad |
| | 55 | // Updated all files with inclusion of timescale file for simulation purposes. |
| | 56 | // |
| | 57 | // Revision 1.1.1.1 2001/10/02 15:33:46 mihad |
| | 58 | // New project directory structure |
| | 59 | // |
| | 60 | // |
| | 61 | |
| | 62 | // module is used to separate logic which uses criticaly constrained inputs from slower logic. |
| | 63 | // It is used to synthesize critical timing logic separately with faster cells or without optimization |
| | 64 | |
| | 65 | // synopsys translate_off |
| | 66 | `include "timescale.v" |
| | 67 | // synopsys translate_on |
| | 68 | |
| | 69 | // this one is used in master state machine for driving correct value of frame output |
| | 70 | |
| | 71 | module pci_frame_crit |
| | 72 | ( |
| | 73 | pci_frame_out, |
| | 74 | force_frame_in, |
| | 75 | slow_frame_in, |
| | 76 | pci_stop_in |
| | 77 | ) ; |
| | 78 | |
| | 79 | output pci_frame_out ; |
| | 80 | input force_frame_in, |
| | 81 | slow_frame_in, |
| | 82 | pci_stop_in ; |
| | 83 | |
| | 84 | assign pci_frame_out = force_frame_in && (slow_frame_in || ~pci_stop_in) ; |
| | 85 | |
| | 86 | endmodule |
projects / raggedstone / blame_incremental