?? pci_delayed_write_reg.v
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//////////////////////////////////////////////////////////////////////
//// ////
//// File name "delayed_write_reg.v" ////
//// ////
//// This file is part of the "PCI bridge" project ////
//// http://www.opencores.org/cores/pci/ ////
//// ////
//// Author(s): ////
//// - Miha Dolenc (mihad@opencores.org) ////
//// ////
//// All additional information is avaliable in the README ////
//// file. ////
//// ////
//// ////
//////////////////////////////////////////////////////////////////////
//// ////
//// Copyright (C) 2001 Miha Dolenc, mihad@opencores.org ////
//// ////
//// 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: pci_delayed_write_reg.v,v $
// Revision 1.1 2003/01/27 16:49:31 mihad
// Changed module and file names. Updated scripts accordingly. FIFO synchronizations changed.
//
// Revision 1.3 2002/02/01 15:25:12 mihad
// Repaired a few bugs, updated specification, added test bench files and design document
//
// Revision 1.2 2001/10/05 08:14:28 mihad
// Updated all files with inclusion of timescale file for simulation purposes.
//
// Revision 1.1.1.1 2001/10/02 15:33:46 mihad
// New project directory structure
//
//
`include "pci_constants.v"
// synopsys translate_off
`include "timescale.v"
// synopsys translate_on
module pci_delayed_write_reg
(
reset_in,
req_clk_in,
comp_wdata_out,
req_we_in,
req_wdata_in
);
// system inputs
input reset_in,
req_clk_in ; // request clock input
output [31:0] comp_wdata_out ; // data output
input req_we_in ; // write enable input
input [31:0] req_wdata_in ; // data input - latched with posedge of req_clk_in when req_we_in is high
reg [31:0] comp_wdata_out ;
// write request operation
always@(posedge req_clk_in or posedge reset_in)
begin
if (reset_in)
comp_wdata_out <= #`FF_DELAY 32'h0000_0000 ;
else
if (req_we_in)
comp_wdata_out <= #`FF_DELAY req_wdata_in ;
end
endmodule // DELAYED_WRITE_REG
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