// ---------------------------------------------------------------------- // Copyright (c) 2015, 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: offset_flag_to_one_hot.v // Version: 1.0 // Verilog Standard: Verilog-2001 // Description: The offset_flag_to_one_hot module takes a data offset, // and offset_enable and computes the 1-hot encoding of the offset when enabled // Author: Dustin Richmond (@darichmond) //----------------------------------------------------------------------------- `timescale 1ns/1ns `include "trellis.vh" module offset_flag_to_one_hot #( parameter C_WIDTH = 4 ) ( input [clog2s(C_WIDTH)-1:0] WR_OFFSET, input WR_FLAG, output [C_WIDTH-1:0] RD_ONE_HOT ); assign RD_ONE_HOT = {{(C_WIDTH-1){1'b0}},WR_FLAG} << WR_OFFSET; endmodule