X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/raggedstone/blobdiff_plain/528d015aa19100f9f97b3469ab7d2aafa43b425e..40a1f26c3a09dbd1f71f4fd7f3aca74f387a09db:/ethernet/source/pci/pci_async_reset_flop.v diff --git a/ethernet/source/pci/pci_async_reset_flop.v b/ethernet/source/pci/pci_async_reset_flop.v new file mode 100644 index 0000000..527d8cd --- /dev/null +++ b/ethernet/source/pci/pci_async_reset_flop.v @@ -0,0 +1,105 @@ +//=========================================================================== +// $Id: pci_async_reset_flop.v,v 1.1 2007-03-20 17:50:56 sithglan Exp $ +// +////////////////////////////////////////////////////////////////////// +//// //// +//// async_reset_flop //// +//// //// +//// This file is part of the general opencores effort. //// +//// //// +//// //// +//// Module Description: //// +//// //// +//// Make a rising-edge triggered flop with async reset with a //// +//// distinguished name so that it's output can be easily //// +//// traced, because it is used for asynchronous reset of some //// +//// flip-flops. //// +//// //// +//// This flop should be used instead of a regular flop for ALL //// +//// asynchronous-reset generator flops. //// +//// //// +//// To Do: //// +//// Nothing //// +//// //// +//// Author(s): //// +//// - Tadej Markovic, tadej@opencores.org //// +//// //// +////////////////////////////////////////////////////////////////////// +//// //// +//// Copyright (C) 2001 Authors and OPENCORES.ORG //// +//// //// +//// This source file may be used and distributed without //// +//// restriction provided that this copyright statement is not //// +//// removed from the file and that any derivative work contains //// +//// the original copyright notice and the associated disclaimer. //// +//// //// +//// This source file is free software; you can redistribute it //// +//// and/or modify it under the terms of the GNU Lesser General //// +//// Public License as published by the Free Software Foundation; //// +//// either version 2.1 of the License, or (at your option) any //// +//// later version. //// +//// //// +//// This source 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 Lesser General Public License for more //// +//// details. //// +//// //// +//// You should have received a copy of the GNU Lesser General //// +//// Public License along with this source; if not, download it //// +//// from //// +//// //// +////////////////////////////////////////////////////////////////////// +// +// CVS Revision History +// +// $Log: pci_async_reset_flop.v,v $ +// Revision 1.1 2007-03-20 17:50:56 sithglan +// add shit +// +// Revision 1.1 2003/01/27 16:49:31 mihad +// Changed module and file names. Updated scripts accordingly. FIFO synchronizations changed. +// +// Revision 1.3 2002/08/14 16:44:19 mihad +// Include statement was enclosed in synosys translate off/on directive - repaired +// +// Revision 1.2 2002/02/25 15:15:43 mihad +// Added include statement that was missing and causing errors +// +// Revision 1.1 2002/02/01 14:43:31 mihad +// *** empty log message *** +// +// +// + +// synopsys translate_off +`include "timescale.v" +// synopsys translate_on + +`include "pci_constants.v" + +module pci_async_reset_flop ( + data_in, clk_in, async_reset_data_out, reset_in +); + +input data_in; +input clk_in; +output async_reset_data_out; +input reset_in; + +reg async_reset_data_out; + +always @(posedge clk_in or posedge reset_in) +begin + if (reset_in) + begin + async_reset_data_out <= #`FF_DELAY 1'b0; + end + else + begin + async_reset_data_out <= #`FF_DELAY data_in; + end +end + +endmodule +