X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/raggedstone/blobdiff_plain/528d015aa19100f9f97b3469ab7d2aafa43b425e..40a1f26c3a09dbd1f71f4fd7f3aca74f387a09db:/ethernet/source/ethernet/eth_register.v diff --git a/ethernet/source/ethernet/eth_register.v b/ethernet/source/ethernet/eth_register.v new file mode 100644 index 0000000..de496e4 --- /dev/null +++ b/ethernet/source/ethernet/eth_register.v @@ -0,0 +1,114 @@ +////////////////////////////////////////////////////////////////////// +//// //// +//// eth_register.v //// +//// //// +//// This file is part of the Ethernet IP core project //// +//// http://www.opencores.org/projects/ethmac/ //// +//// //// +//// Author(s): //// +//// - Igor Mohor (igorM@opencores.org) //// +//// //// +//// All additional information is avaliable in the Readme.txt //// +//// file. //// +//// //// +////////////////////////////////////////////////////////////////////// +//// //// +//// Copyright (C) 2001, 2002 Authors //// +//// //// +//// 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 http://www.opencores.org/lgpl.shtml //// +//// //// +////////////////////////////////////////////////////////////////////// +// +// CVS Revision History +// +// $Log: eth_register.v,v $ +// Revision 1.1 2007-03-20 17:50:56 sithglan +// add shit +// +// Revision 1.6 2002/08/16 22:10:12 mohor +// Synchronous reset added. +// +// Revision 1.5 2002/08/16 12:33:27 mohor +// Parameter ResetValue changed to capital letters. +// +// Revision 1.4 2002/02/26 16:18:08 mohor +// Reset values are passed to registers through parameters +// +// Revision 1.3 2002/01/23 10:28:16 mohor +// Link in the header changed. +// +// Revision 1.2 2001/10/19 08:43:51 mohor +// eth_timescale.v changed to timescale.v This is done because of the +// simulation of the few cores in a one joined project. +// +// Revision 1.1 2001/08/06 14:44:29 mohor +// A define FPGA added to select between Artisan RAM (for ASIC) and Block Ram (For Virtex). +// Include files fixed to contain no path. +// File names and module names changed ta have a eth_ prologue in the name. +// File eth_timescale.v is used to define timescale +// All pin names on the top module are changed to contain _I, _O or _OE at the end. +// Bidirectional signal MDIO is changed to three signals (Mdc_O, Mdi_I, Mdo_O +// and Mdo_OE. The bidirectional signal must be created on the top level. This +// is done due to the ASIC tools. +// +// +// +// +// +// +// + +`include "timescale.v" + + +module eth_register(DataIn, DataOut, Write, Clk, Reset, SyncReset); + +parameter WIDTH = 8; // default parameter of the register width +parameter RESET_VALUE = 0; + +input [WIDTH-1:0] DataIn; + +input Write; +input Clk; +input Reset; +input SyncReset; + +output [WIDTH-1:0] DataOut; +reg [WIDTH-1:0] DataOut; + + + +always @ (posedge Clk or posedge Reset) +begin + if(Reset) + DataOut<=#1 RESET_VALUE; + else + if(SyncReset) + DataOut<=#1 RESET_VALUE; + else + if(Write) // write + DataOut<=#1 DataIn; +end + + + +endmodule // Register