Subversion Repositories s80186

// Copyright Jamie Iles, 2017

//

// This file is part of s80x86.

//

// s80x86 is free software: you can redistribute it and/or modify

// it under the terms of the GNU General Public License as published by

// the Free Software Foundation, either version 3 of the License, or

// (at your option) any later version.

//

// s80x86 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 General Public License for more details.

//

// You should have received a copy of the GNU General Public License

// along with s80x86.  If not, see .

module PosedgeToPulse(input logic clk,

                      input logic reset,

                      input logic d,

                      output logic q);

reg d_prev;

always_ff @(posedge clk)

    d_prev <= d;

always_ff @(posedge clk or posedge reset)

    if (reset) begin

        q <= 1'b0;

    end else begin

        q <= (d ^ d_prev) & d;

    end

endmodule