// ---------------------------------------------------------------------- // Copyright (c) 2016, The Regents of the University of California All // rights reserved. // // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // // * Neither the name of The Regents of the University of California // nor the names of its contributors may be used to endorse or // promote products derived from this software without specific // prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL REGENTS OF THE // UNIVERSITY OF CALIFORNIA BE LIABLE FOR ANY DIRECT, INDIRECT, // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, // BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS // OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND // ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR // TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE // USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH // DAMAGE. // ---------------------------------------------------------------------- //---------------------------------------------------------------------------- // Filename: register.v // Version: 1.00 // Verilog Standard: Verilog-2001 // Description: A simple parameterized register // Author: Dustin Richmond (@darichmond) //----------------------------------------------------------------------------- `timescale 1ns/1ns module register #(parameter C_WIDTH = 1, parameter C_VALUE = 0 ) (input CLK, input RST_IN, output [C_WIDTH-1:0] RD_DATA, input [C_WIDTH-1:0] WR_DATA, input WR_EN ); reg [C_WIDTH-1:0] rData; assign RD_DATA = rData; always @(posedge CLK) begin if(RST_IN) begin rData <= C_VALUE; end else if(WR_EN) begin rData <= WR_DATA; end end endmodule