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//////////////////////////////////////////////////////////////////////

////                                                              ////

////  GPIO Monitor                                                ////

////                                                              ////

////  This file is part of the GPIO project                       ////

////  http://www.opencores.org/cores/gpio/                        ////

////                                                              ////

////  Description                                                 ////

////  Generates and monitors GPIO external signals (+auxiliary)   ////

////                                                              ////

////  To Do:                                                      ////

////   Nothing                                                    ////

////                                                              ////

////  Author(s):                                                  ////

////      - Damjan Lampret, lampret@opencores.org                 ////

////                                                              ////

//////////////////////////////////////////////////////////////////////

////                                                              ////

//// Copyright (C) 2000 Authors and 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: not supported by cvs2svn $

// Revision 1.2  2001/07/14 20:37:20  lampret

// Test bench improvements.

//

// Revision 1.1  2001/06/05 07:45:22  lampret

// Added initial RTL and test benches. There are still some issues with these files.

//

//

`include "timescale.v"

module gpio_mon(gpio_aux, gpio_in, gpio_eclk, gpio_out, gpio_oen);

parameter gw = 32;

//

// I/O ports

//

output  [gw-1:0] gpio_aux;       // Auxiliary

output  [gw-1:0] gpio_in;        // GPIO inputs

output                  gpio_eclk;      // GPIO external clock

input   [gw-1:0] gpio_out;       // GPIO outputs

input   [gw-1:0] gpio_oen;       // GPIO output enables

//

// Internal regs

//

reg     [gw-1:0] gpio_aux;

reg     [gw-1:0] gpio_in;

reg                     gpio_eclk;

initial gpio_eclk = 0;

//

// Set gpio_in

//

task set_gpioin;

input   [31:0]   val;

begin

        gpio_in = val;

end

endtask

//

// Set gpio_aux

//

task set_gpioaux;

input   [31:0]   val;

begin

        gpio_aux = val;

end

endtask

//

// Set gpio_eclk

//

task set_gpioeclk;

input   [31:0]   val;

begin

        gpio_eclk = val[0];

end

endtask

//

// Get gpio_out

//

task get_gpioout;

output  [31:0]   val;

reg     [31:0]   val;

begin

        val = gpio_out;

end

endtask

//

// Get gpio_oen

//

task get_gpiooen;

output  [31:0]   val;

begin

        val = gpio_oen;

end

endtask

endmodule