Subversion Repositories wisbone_2_ahb

//******************************************************************************************************

// Copyright (c) 2007 TooMuch Semiconductor Solutions Pvt Ltd.

//File name             :       wb_ahb_master.sv

//Date                  :        Aug, 2007

//Description           :       Master for initializing values during Reset State of Device

//Revision              :       1.0

//******************************************************************************************************

`timescale 1 ns/1 ps

import global::*;

module stimulus_gen( wb_ahb_if.master_wb m_wb,

                     input bit clk,

                     input bit reset);

//******************************************

// assign input clk and reset to stimulus gen

//******************************************

 assign m_wb.clk_i = clk;

 assign m_wb.rst_i = reset;

//*****************************************

// Values of various signals at Reset State of the Device

//*****************************************

always @(posedge m_wb.clk_i)

        if (m_wb.rst_i)

                begin

                m_wb.cyc_i='bx;

                m_wb.stb_i='bx;

                m_wb.sel_i='bx;

                m_wb.addr_i='bx;

                m_wb.data_i='bx;

                $display("Values of various signals at Reset State of the Device");

                $display("%0b, %0b, %0b, %0d, %0d" ,m_wb.cyc_i , m_wb.stb_i , m_wb.sel_i,m_wb.addr_i,m_wb.data_i );

                end

//******************************************

// initial signal setups

//******************************************

task initial_setup;

        begin

        @(posedge m_wb.clk_i);

        # 2     m_wb.cyc_i='b0;

                m_wb.stb_i='b0;

                m_wb.sel_i='b0;

                m_wb.we_i='bx;

                m_wb.addr_i='bx;

                m_wb.data_i='bx;

                $display("Initial signal setups values");

                $display("%0b, %0b, %0b, %0b, %0d, %0d" ,m_wb.cyc_i , m_wb.stb_i , m_wb.sel_i,m_wb.we_i,m_wb.addr_i,m_wb.data_i);

        #20     m_wb.cyc_i='b1;

                m_wb.stb_i='b1;

                m_wb.sel_i='b0;

                m_wb.we_i='b1;//Write operation

                $display("Initial signal setups values to start working");

                $display("at %0d ,%0b, %0b, %0b, %0b",$time,m_wb.cyc_i , m_wb.stb_i , m_wb.sel_i,m_wb.we_i );

        end

endtask

endmodule