// ---------------------------------------------------------------------- // 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: scsdp.v Version: 1.0 Verilog Standard: Verilog-2001 Description: A simple, single clock, simple dual port (SCSDP) ram Notes: Any modifications to this file should meet the conditions set forth in the "Trellis Style Guide" Author: Dustin Richmond (@darichmond) Co-Authors: */ `timescale 1ns/1ns `include "functions.vh" module scsdpram #( parameter C_WIDTH = 32, parameter C_DEPTH = 1024 ) ( input CLK, input RD1_EN, input [clog2s(C_DEPTH)-1:0] RD1_ADDR, output [C_WIDTH-1:0] RD1_DATA, input WR1_EN, input [clog2s(C_DEPTH)-1:0] WR1_ADDR, input [C_WIDTH-1:0] WR1_DATA ); reg [C_WIDTH-1:0] rMemory [C_DEPTH-1:0]; reg [C_WIDTH-1:0] rDataOut; assign RD1_DATA = rDataOut; always @(posedge CLK) begin if (WR1_EN) begin rMemory[WR1_ADDR] <= #1 WR1_DATA; end if(RD1_EN) begin rDataOut <= #1 rMemory[RD1_ADDR]; end end endmodule