Subversion Repositories opb_wb_wrapper

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

////                                                             ////

////  OPB to WISHBONE interface wrapper                          ////

////                                                             ////

////                                                             ////

////  Author: Rudolf Usselmann                                   ////

////          rudi@asics.ws                                      ////

////                                                             ////

////                                                             ////

////  Proprietary and Confidential Information of                ////

////  ASICS World Services, LTD                                  ////

////                                                             ////

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

////                                                             ////

//// Copyright (C) 2000-2004 ASICS World Services, LTD.          ////

////                         www.asics.ws                        ////

////                         info@asics.ws                       ////

////                                                             ////

//// This software is provided under license and contains        ////

//// proprietary and confidential material which are the         ////

//// property of ASICS World Services, LTD.                      ////

////                                                             ////

////     THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY     ////

//// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED   ////

//// TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS   ////

//// FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL THE AUTHOR      ////

//// OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,         ////

//// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES    ////

//// (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE   ////

//// GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR        ////

//// BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF  ////

//// LIABILITY, WHETHER IN  CONTRACT, STRICT LIABILITY, OR TORT  ////

//// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT  ////

//// OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE         ////

//// POSSIBILITY OF SUCH DAMAGE.                                 ////

////                                                             ////

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

//  $Id:        $

module opb2wb(  OPB_Clk, rst,

                // OPB Slave Interface (Connect to OPB Master)

                opb_abus, opb_be, opb_dbus, opb_rnw, opb_select, opb_seqaddr,

                sl_dbus, sl_errack, sl_retry, sl_toutsup, sl_xferack,

                // WISHBONE Master Interface (Connect to WB Slave)

                wb_data_o, wb_data_i, wb_addr_o,

                wb_cyc_o, wb_stb_o, wb_sel_o, wb_we_o, wb_ack_i, wb_err_i, wb_rty_i

        );

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

//

// Parameter

//

parameter       C_BASEADDR      = 32'h8000_0000,

                C_HIGHADDR      = 32'h8000_00ff;

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

//

// Inputs & Outputs

//

// --------------------------------------

// System IO

input                           OPB_Clk;

input                           rst;

// --------------------------------------

// OPB Slave Interface (Connect to OPB Master)

input   [31:0]           opb_abus;

input   [3:0]            opb_be;

input   [31:0]           opb_dbus;

input                   opb_rnw;

input                   opb_select;

input                   opb_seqaddr;

output  [31:0]           sl_dbus;

output                  sl_errack;

output                  sl_retry;

output                  sl_toutsup;

output                  sl_xferack;

// --------------------------------------

// WISHBONE Master Interface (Connect to WB Slave)

output  [31:0]           wb_data_o;

input   [31:0]           wb_data_i;

output  [31:0]           wb_addr_o;

output                  wb_cyc_o, wb_stb_o;

output  [3:0]            wb_sel_o;

output                  wb_we_o;

input                   wb_ack_i, wb_err_i, wb_rty_i;

endmodule