Subversion Repositories gpio

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

////                                                              ////

////  GPIO Testbench Top                                          ////

////                                                              ////

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

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

////                                                              ////

////  Description                                                 ////

////  Top level of testbench. It instantiates all blocks.         ////

////                                                              ////

////  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 1.3  2002/03/13 20:56:16  lampret

// Removed zero padding as per Avi Shamli suggestion.

//

// Revision 1.2  2001/09/18 15:43:28  lampret

// Changed gpio top level into gpio_top. Changed defines.v into gpio_defines.v.

//

// Revision 1.1  2001/08/21 21:39:27  lampret

// Changed directory structure, port names and drfines.

//

// Revision 1.2  2001/07/14 20:37:24  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"

`include "gpio_defines.v"

module tb_top;

parameter aw = `GPIO_ADDRHH+1 ;

parameter dw = 32;

parameter gw = `GPIO_IOS;

//

// Interconnect wires

//

wire                    clk;    // Clock

wire                    rst;    // Reset

wire                    cyc;    // Cycle valid

wire    [aw-1:0] adr;    // Address bus

wire    [dw-1:0] dat_m;  // Data bus from PTC to WBM

wire    [3:0]            sel;    // Data selects

wire                    we;     // Write enable

wire                    stb;    // Strobe

wire    [dw-1:0] dat_ptc;// Data bus from WBM to PTC

wire                    ack;    // Successful cycle termination

wire                    err;    // Failed cycle termination

wire    [gw-1:0] gpio_aux;       // GPIO auxiliary signals

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

wire                    gpio_eclk;      // GPIO external clock

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

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

wire [ 3 : 0 ] tag_o ;

//

// Instantiation of Clock/Reset Generator

//

clkrst clkrst(

        // Clock

        .clk_o(clk),

        // Reset

        .rst_o(rst)

);

//

// Instantiation of Master WISHBONE BFM

//

wb_master wb_master(

        // WISHBONE Interface

        .CLK_I(clk),

        .RST_I(rst),

        .CYC_O(cyc),

        .ADR_O(adr),

        .DAT_O(dat_ptc),

        .SEL_O(sel),

        .WE_O(we),

        .STB_O(stb),

        .DAT_I(dat_m),

        .ACK_I(ack),

        .ERR_I(err),

        .RTY_I(1'b0),

        .TAG_I(4'b0),

  .TAG_O ( tag_o )

);

//

// Instantiation of PTC core

//

gpio_top gpio_top(

        // WISHBONE Interface

        .wb_clk_i(clk),

        .wb_rst_i(rst),

        .wb_cyc_i(cyc),

        .wb_adr_i(adr),

        .wb_dat_i(dat_ptc),

        .wb_sel_i(sel),

        .wb_we_i(we),

        .wb_stb_i(stb),

        .wb_dat_o(dat_m),

        .wb_ack_o(ack),

        .wb_err_o(err),

        .wb_inta_o(),

        // Auxiliary inputs interface

        .aux_i(gpio_aux),

        // External GPIO Interface

        .ext_pad_i(gpio_in),

        .clk_pad_i(gpio_eclk),

        .ext_pad_o(gpio_out),

        .ext_padoen_o(gpio_oen)

);

//

// GPIO Monitor

//

gpio_mon gpio_mon(

        .gpio_aux(gpio_aux),

        .gpio_in(gpio_in),

        .gpio_eclk(gpio_eclk),

        .gpio_out(gpio_out),

        .gpio_oen(gpio_oen)

);

endmodule