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//////////////////////////////////////////////////////////////////////
///                                                               //// 
/// Wishbone arbiter, byte-wide data path, no bursting            ////
///                                                               ////
/// Simple arbiter, single master, multiple slave, for byte-wide  ////
/// peripherals                                                   ////
///                                                               ////
/// Julius Baxter, julius@opencores.org                           ////
///                                                               ////
//////////////////////////////////////////////////////////////////////
////                                                              ////
//// Copyright (C) 2009, 2010 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                     ////
////                                                              ////
//////////////////////////////////////////////////////////////////////
 
//
// Things to update when changing slave config:
//
// 1. Port list
// 2. Port specification
// 3. Slave addr select parameter
// 4. Slave addr selects
// 5. Slave input mux logic
// 6. The four different master out mux logics (dat_o mux, and ack, rty & err)
//
`include "orpsoc-defines.v"
module arbiter_bytebus
  (
 
   // Master in   
   wbm0_adr_o,
   wbm0_dat_o,
   wbm0_sel_o,
   wbm0_we_o,
   wbm0_cyc_o,
   wbm0_stb_o,
   wbm0_cti_o,
   wbm0_bte_o,
   wbm0_dat_i,
   wbm0_ack_i,
   wbm0_err_i,
   wbm0_rty_i,
 
   // Slave one
   // Wishbone Slave interface
   wbs0_adr_i,
   wbs0_dat_i,
   wbs0_we_i,
   wbs0_cyc_i,
   wbs0_stb_i,
   wbs0_cti_i,
   wbs0_bte_i,
   wbs0_dat_o,
   wbs0_ack_o,
   wbs0_err_o,
   wbs0_rty_o,
 
   // Slave two
   // Wishbone Slave interface
   wbs1_adr_i,
   wbs1_dat_i,
   wbs1_we_i,
   wbs1_cyc_i,
   wbs1_stb_i,
   wbs1_cti_i,
   wbs1_bte_i,
   wbs1_dat_o,
   wbs1_ack_o,
   wbs1_err_o,
   wbs1_rty_o,
 
   // Slave three
   // Wishbone Slave interface
   wbs2_adr_i,
   wbs2_dat_i,
   wbs2_we_i,
   wbs2_cyc_i,
   wbs2_stb_i,
   wbs2_cti_i,
   wbs2_bte_i,
   wbs2_dat_o,
   wbs2_ack_o,
   wbs2_err_o,
   wbs2_rty_o,
 
   // Slave four
   // Wishbone Slave interface
   wbs3_adr_i,
   wbs3_dat_i,
   wbs3_we_i,
   wbs3_cyc_i,
   wbs3_stb_i,
   wbs3_cti_i,
   wbs3_bte_i,
   wbs3_dat_o,
   wbs3_ack_o,
   wbs3_err_o,
   wbs3_rty_o,
 
   // Slave five
   // Wishbone Slave interface
   wbs4_adr_i,
   wbs4_dat_i,
   wbs4_we_i,
   wbs4_cyc_i,
   wbs4_stb_i,
   wbs4_cti_i,
   wbs4_bte_i,
   wbs4_dat_o,
   wbs4_ack_o,
   wbs4_err_o,
   wbs4_rty_o,
 
   // Slave six
   // Wishbone Slave interface
   wbs5_adr_i,
   wbs5_dat_i,
   wbs5_we_i,
   wbs5_cyc_i,
   wbs5_stb_i,
   wbs5_cti_i,
   wbs5_bte_i,
   wbs5_dat_o,
   wbs5_ack_o,
   wbs5_err_o,
   wbs5_rty_o,
 
   // Slave seven
   // Wishbone Slave interface
   wbs6_adr_i,
   wbs6_dat_i,
   wbs6_we_i,
   wbs6_cyc_i,
   wbs6_stb_i,
   wbs6_cti_i,
   wbs6_bte_i,
   wbs6_dat_o,
   wbs6_ack_o,
   wbs6_err_o,
   wbs6_rty_o,
 
   // Slave eight
   // Wishbone Slave interface
   wbs7_adr_i,
   wbs7_dat_i,
   wbs7_we_i,
   wbs7_cyc_i,
   wbs7_stb_i,
   wbs7_cti_i,
   wbs7_bte_i,
   wbs7_dat_o,
   wbs7_ack_o,
   wbs7_err_o,
   wbs7_rty_o,
 
   // Slave nine
   // Wishbone Slave interface
   wbs8_adr_i,
   wbs8_dat_i,
   wbs8_we_i,
   wbs8_cyc_i,
   wbs8_stb_i,
   wbs8_cti_i,
   wbs8_bte_i,
   wbs8_dat_o,
   wbs8_ack_o,
   wbs8_err_o,
   wbs8_rty_o,
 
   // Slave ten
   // Wishbone Slave interface
   wbs9_adr_i,
   wbs9_dat_i,
   wbs9_we_i,
   wbs9_cyc_i,
   wbs9_stb_i,
   wbs9_cti_i,
   wbs9_bte_i,
   wbs9_dat_o,
   wbs9_ack_o,
   wbs9_err_o,
   wbs9_rty_o,
 
   // Slave eleven
   // Wishbone Slave interface
   wbs10_adr_i,
   wbs10_dat_i,
   wbs10_we_i,
   wbs10_cyc_i,
   wbs10_stb_i,
   wbs10_cti_i,
   wbs10_bte_i,
   wbs10_dat_o,
   wbs10_ack_o,
   wbs10_err_o,
   wbs10_rty_o,
 
   // Slave twelve
   // Wishbone Slave interface
   wbs11_adr_i,
   wbs11_dat_i,
   wbs11_we_i,
   wbs11_cyc_i,
   wbs11_stb_i,
   wbs11_cti_i,
   wbs11_bte_i,
   wbs11_dat_o,
   wbs11_ack_o,
   wbs11_err_o,
   wbs11_rty_o,
/*   
   // Slave thirteen
   // Wishbone Slave interface
   wbs12_adr_i,
   wbs12_dat_i,
   wbs12_we_i,
   wbs12_cyc_i,
   wbs12_stb_i,
   wbs12_cti_i,
   wbs12_bte_i,
   wbs12_dat_o,
   wbs12_ack_o,
   wbs12_err_o,
   wbs12_rty_o,
 
    // Slave fourteen
    // Wishbone Slave interface
    wbs13_adr_i,
    wbs13_dat_i,
    wbs13_we_i,
    wbs13_cyc_i,
    wbs13_stb_i,
    wbs13_cti_i,
    wbs13_bte_i,
   wbs13_dat_o,
    wbs13_ack_o,
    wbs13_err_o,
    wbs13_rty_o,
 
    // Slave fifteen
    // Wishbone Slave interface
    wbs14_adr_i,
    wbs14_dat_i,
    wbs14_we_i,
    wbs14_cyc_i,
    wbs14_stb_i,
    wbs14_cti_i,
    wbs14_bte_i,
   wbs14_dat_o,
    wbs14_ack_o,
    wbs14_err_o,
    wbs14_rty_o,
 
    // Slave sixteen
    // Wishbone Slave interface
    wbs15_adr_i,
    wbs15_dat_i,
    wbs15_we_i,
    wbs15_cyc_i,
    wbs15_stb_i,
    wbs15_cti_i,
    wbs15_bte_i,
 
    wbs15_dat_o,
    wbs15_ack_o,
    wbs15_err_o,
    wbs15_rty_o,
 
    // Slave seventeen
    // Wishbone Slave interface
    wbs16_adr_i,
    wbs16_dat_i,
    wbs16_we_i,
    wbs16_cyc_i,
    wbs16_stb_i,
    wbs16_cti_i,
    wbs16_bte_i,
 
    wbs16_dat_o,
    wbs16_ack_o,
    wbs16_err_o,
    wbs16_rty_o,
 
 
    // Slave eighteen
    // Wishbone Slave interface
    wbs17_adr_i,
    wbs17_dat_i,
    wbs17_we_i,
    wbs17_cyc_i,
    wbs17_stb_i,
    wbs17_cti_i,
    wbs17_bte_i,
 
    wbs17_dat_o,
    wbs17_ack_o,
    wbs17_err_o,
    wbs17_rty_o,
 
    // Slave nineteen
    // Wishbone Slave interface
    wbs18_adr_i,
    wbs18_dat_i,
    wbs18_we_i,
    wbs18_cyc_i,
    wbs18_stb_i,
    wbs18_cti_i,
    wbs18_bte_i,
 
    wbs18_dat_o,
    wbs18_ack_o,
    wbs18_err_o,
    wbs18_rty_o,
 
    // Slave twenty
    // Wishbone Slave interface
    wbs19_adr_i,
    wbs19_dat_i,
    wbs19_we_i,
    wbs19_cyc_i,
    wbs19_stb_i,
    wbs19_cti_i,
    wbs19_bte_i,
 
    wbs19_dat_o,
    wbs19_ack_o,
    wbs19_err_o,
    wbs19_rty_o,
 
    */
 
   wb_clk, wb_rst
   );
 
 
   parameter wb_dat_width = 32;
   parameter wbs_dat_width = 8;
   parameter wb_adr_width = 32;
 
   parameter wb_addr_match_width = 8;
 
   parameter wb_num_slaves = 20; // Currently can handle up to 20
 
   // Slave addresses
 
   parameter slave0_adr =  8'h00; 
   parameter slave1_adr =  8'h00; 
   parameter slave2_adr =  8'h00; 
   parameter slave3_adr =  8'h00; 
   parameter slave4_adr =  8'h00; 
   parameter slave5_adr =  8'h00; 
   parameter slave6_adr =  8'h00; 
   parameter slave7_adr =  8'h00; 
   parameter slave8_adr =  8'h00; 
   parameter slave9_adr =  8'h00; 
   parameter slave10_adr = 8'h00;
   parameter slave11_adr = 8'h00;
   parameter slave12_adr = 8'h00;
   parameter slave13_adr = 8'h00;
   parameter slave14_adr = 8'h00;
   parameter slave15_adr = 8'h00;
   parameter slave16_adr = 8'h00;
   parameter slave17_adr = 8'h00;
   parameter slave18_adr = 8'h00;
   parameter slave19_adr = 8'h00;
 
 
`define WB_ARB_ADDR_MATCH_SEL wb_adr_width-1:wb_adr_width-wb_addr_match_width
 
   input wb_clk;
   input wb_rst;
 
   // WB Master one
   input [wb_adr_width-1:0] wbm0_adr_o;
   input [wb_dat_width-1:0] wbm0_dat_o;
   input [3:0] 		    wbm0_sel_o;
   input 		    wbm0_we_o;
   input 		    wbm0_cyc_o;
   input 		    wbm0_stb_o;
   input [2:0] 		    wbm0_cti_o;
   input [1:0] 		    wbm0_bte_o;
   output [wb_dat_width-1:0] wbm0_dat_i;   
   output 		     wbm0_ack_i;
   output 		     wbm0_err_i;
   output 		     wbm0_rty_i;   
 
 
   // Slave one
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs0_adr_i;
   output [wbs_dat_width-1:0] wbs0_dat_i;
   output 		     wbs0_we_i;
   output 		     wbs0_cyc_i;
   output 		     wbs0_stb_i;
   output [2:0] 	     wbs0_cti_i;
   output [1:0] 	     wbs0_bte_i;
   input [wbs_dat_width-1:0]  wbs0_dat_o;
   input 		     wbs0_ack_o;
   input 		     wbs0_err_o;
   input 		     wbs0_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs1_adr_i;
   output [wbs_dat_width-1:0] wbs1_dat_i;
   output 		     wbs1_we_i;
   output 		     wbs1_cyc_i;
   output 		     wbs1_stb_i;
   output [2:0] 	     wbs1_cti_i;
   output [1:0] 	     wbs1_bte_i;
   input [wbs_dat_width-1:0]  wbs1_dat_o;
   input 		     wbs1_ack_o;
   input 		     wbs1_err_o;
   input 		     wbs1_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs2_adr_i;
   output [wbs_dat_width-1:0] wbs2_dat_i;
   output 		     wbs2_we_i;
   output 		     wbs2_cyc_i;
   output 		     wbs2_stb_i;
   output [2:0] 	     wbs2_cti_i;
   output [1:0] 	     wbs2_bte_i;
   input [wbs_dat_width-1:0]  wbs2_dat_o;
   input 		     wbs2_ack_o;
   input 		     wbs2_err_o;
   input 		     wbs2_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs3_adr_i;
   output [wbs_dat_width-1:0] wbs3_dat_i;
   output 		     wbs3_we_i;
   output 		     wbs3_cyc_i;
   output 		     wbs3_stb_i;
   output [2:0] 	     wbs3_cti_i;
   output [1:0] 	     wbs3_bte_i;
   input [wbs_dat_width-1:0]  wbs3_dat_o;
   input 		     wbs3_ack_o;
   input 		     wbs3_err_o;
   input 		     wbs3_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs4_adr_i;
   output [wbs_dat_width-1:0] wbs4_dat_i;
   output 		     wbs4_we_i;
   output 		     wbs4_cyc_i;
   output 		     wbs4_stb_i;
   output [2:0] 	     wbs4_cti_i;
   output [1:0] 	     wbs4_bte_i;
   input [wbs_dat_width-1:0]  wbs4_dat_o;
   input 		     wbs4_ack_o;
   input 		     wbs4_err_o;
   input 		     wbs4_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs5_adr_i;
   output [wbs_dat_width-1:0] wbs5_dat_i;
   output 		     wbs5_we_i;
   output 		     wbs5_cyc_i;
   output 		     wbs5_stb_i;
   output [2:0] 	     wbs5_cti_i;
   output [1:0] 	     wbs5_bte_i;
   input [wbs_dat_width-1:0]  wbs5_dat_o;
   input 		     wbs5_ack_o;
   input 		     wbs5_err_o;
   input 		     wbs5_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs6_adr_i;
   output [wbs_dat_width-1:0] wbs6_dat_i;
   output 		     wbs6_we_i;
   output 		     wbs6_cyc_i;
   output 		     wbs6_stb_i;
   output [2:0] 	     wbs6_cti_i;
   output [1:0] 	     wbs6_bte_i;
   input [wbs_dat_width-1:0]  wbs6_dat_o;
   input 		     wbs6_ack_o;
   input 		     wbs6_err_o;
   input 		     wbs6_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs7_adr_i;
   output [wbs_dat_width-1:0] wbs7_dat_i;
   output 		     wbs7_we_i;
   output 		     wbs7_cyc_i;
   output 		     wbs7_stb_i;
   output [2:0] 	     wbs7_cti_i;
   output [1:0] 	     wbs7_bte_i;
   input [wbs_dat_width-1:0]  wbs7_dat_o;
   input 		     wbs7_ack_o;
   input 		     wbs7_err_o;
   input 		     wbs7_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs8_adr_i;
   output [wbs_dat_width-1:0] wbs8_dat_i;
   output 		     wbs8_we_i;
   output 		     wbs8_cyc_i;
   output 		     wbs8_stb_i;
   output [2:0] 	     wbs8_cti_i;
   output [1:0] 	     wbs8_bte_i;
   input [wbs_dat_width-1:0]  wbs8_dat_o;
   input 		     wbs8_ack_o;
   input 		     wbs8_err_o;
   input 		     wbs8_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs9_adr_i;
   output [wbs_dat_width-1:0] wbs9_dat_i;
   output 		     wbs9_we_i;
   output 		     wbs9_cyc_i;
   output 		     wbs9_stb_i;
   output [2:0] 	     wbs9_cti_i;
   output [1:0] 	     wbs9_bte_i;
   input [wbs_dat_width-1:0]  wbs9_dat_o;
   input 		     wbs9_ack_o;
   input 		     wbs9_err_o;
   input 		     wbs9_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs10_adr_i;
   output [wbs_dat_width-1:0] wbs10_dat_i;
   output 		     wbs10_we_i;
   output 		     wbs10_cyc_i;
   output 		     wbs10_stb_i;
   output [2:0] 	     wbs10_cti_i;
   output [1:0] 	     wbs10_bte_i;
   input [wbs_dat_width-1:0]  wbs10_dat_o;
   input 		     wbs10_ack_o;
   input 		     wbs10_err_o;
   input 		     wbs10_rty_o;
 
 
 // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs11_adr_i;
   output [wbs_dat_width-1:0] wbs11_dat_i;
   output 		     wbs11_we_i;
   output 		     wbs11_cyc_i;
   output 		     wbs11_stb_i;
   output [2:0] 	     wbs11_cti_i;
   output [1:0] 	     wbs11_bte_i;
   input [wbs_dat_width-1:0]  wbs11_dat_o;
   input 		     wbs11_ack_o;
   input 		     wbs11_err_o;
   input 		     wbs11_rty_o;
/*         
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs12_adr_i;
   output [wbs_dat_width-1:0] wbs12_dat_i;
   output 		      wbs12_we_i;
   output 		      wbs12_cyc_i;
   output 		      wbs12_stb_i;
   output [2:0] 	      wbs12_cti_i;
   output [1:0] 	      wbs12_bte_i;
   input [wbs_dat_width-1:0]  wbs12_dat_o;
   input 		      wbs12_ack_o;
   input 		      wbs12_err_o;
   input 		      wbs12_rty_o;
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs13_adr_i;
   output [wbs_dat_width-1:0] wbs13_dat_i;
   output 		     wbs13_we_i;
   output 		     wbs13_cyc_i;
   output 		     wbs13_stb_i;
   output [2:0] 	     wbs13_cti_i;
   output [1:0] 	     wbs13_bte_i;
   input [wbs_dat_width-1:0]  wbs13_dat_o;
   input 		     wbs13_ack_o;
   input 		     wbs13_err_o;
   input 		     wbs13_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs14_adr_i;
   output [wbs_dat_width-1:0] wbs14_dat_i;
   output 		     wbs14_we_i;
   output 		     wbs14_cyc_i;
   output 		     wbs14_stb_i;
   output [2:0] 	     wbs14_cti_i;
   output [1:0] 	     wbs14_bte_i;
   input [wbs_dat_width-1:0]  wbs14_dat_o;
   input 		     wbs14_ack_o;
   input 		     wbs14_err_o;
   input 		     wbs14_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs15_adr_i;
   output [wbs_dat_width-1:0] wbs15_dat_i;
   output 		     wbs15_we_i;
   output 		     wbs15_cyc_i;
   output 		     wbs15_stb_i;
   output [2:0] 	     wbs15_cti_i;
   output [1:0] 	     wbs15_bte_i;
   input [wbs_dat_width-1:0]  wbs15_dat_o;
   input 		     wbs15_ack_o;
   input 		     wbs15_err_o;
   input 		     wbs15_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs16_adr_i;
   output [wbs_dat_width-1:0] wbs16_dat_i;
   output 		     wbs16_we_i;
   output 		     wbs16_cyc_i;
   output 		     wbs16_stb_i;
   output [2:0] 	     wbs16_cti_i;
   output [1:0] 	     wbs16_bte_i;
   input [wbs_dat_width-1:0]  wbs16_dat_o;
   input 		     wbs16_ack_o;
   input 		     wbs16_err_o;
   input 		     wbs16_rty_o;
 
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs17_adr_i;
   output [wbs_dat_width-1:0] wbs17_dat_i;
   output 		     wbs17_we_i;
   output 		     wbs17_cyc_i;
   output 		     wbs17_stb_i;
   output [2:0] 	     wbs17_cti_i;
   output [1:0] 	     wbs17_bte_i;
   input [wbs_dat_width-1:0]  wbs17_dat_o;
   input 		     wbs17_ack_o;
   input 		     wbs17_err_o;
   input 		     wbs17_rty_o;
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs18_adr_i;
   output [wbs_dat_width-1:0] wbs18_dat_i;
   output 		     wbs18_we_i;
   output 		     wbs18_cyc_i;
   output 		     wbs18_stb_i;
   output [2:0] 	     wbs18_cti_i;
   output [1:0] 	     wbs18_bte_i;
   input [wbs_dat_width-1:0]  wbs18_dat_o;
   input 		     wbs18_ack_o;
   input 		     wbs18_err_o;
   input 		     wbs18_rty_o;
 
   // Wishbone Slave interface
   output [wb_adr_width-1:0] wbs19_adr_i;
   output [wbs_dat_width-1:0] wbs19_dat_i;
   output 		     wbs19_we_i;
   output 		     wbs19_cyc_i;
   output 		     wbs19_stb_i;
   output [2:0] 	     wbs19_cti_i;
   output [1:0] 	     wbs19_bte_i;
   input [wbs_dat_width-1:0]  wbs19_dat_o;
   input 		     wbs19_ack_o;
   input 		     wbs19_err_o;
   input 		     wbs19_rty_o;
 */
 
   reg 		     watchdog_err;
 
   // Master input mux output wires
   wire [wb_adr_width-1:0]   wbm_adr_o;
   wire [wbs_dat_width-1:0]  wbm_dat_o;
   wire [3:0] 		     wbm_sel_o;
   wire 		     wbm_we_o;
   wire 		     wbm_cyc_o;
   wire 		     wbm_stb_o;
   wire [2:0] 		     wbm_cti_o;
   wire [1:0] 		     wbm_bte_o;
 
   wire [wbs_dat_width-1:0]   wbm_dat_byte_i;   
   wire 		     wbm_ack_i;
   wire 		     wbm_err_i;
   wire 		     wbm_rty_i;   
 
 
   // Master input mux (not really used, only one master on this bus)
   assign wbm_adr_o = wbm0_adr_o;
 
   // Select the right byte and put it on the data out line
   // !BIG ENDIAN!
   assign wbm_dat_o = wbm0_sel_o[3] ? wbm0_dat_o[31:24] :
		      wbm0_sel_o[2] ? wbm0_dat_o[23:16] :
		      wbm0_sel_o[1] ? wbm0_dat_o[15:8] :
		      wbm0_dat_o[7:0];
 
   assign wbm_we_o = wbm0_we_o;
 
   assign wbm_cyc_o = wbm0_stb_o;
 
   assign wbm_stb_o = wbm0_stb_o;
 
   // Will we really need these for byte-peripherals
   assign wbm_cti_o = wbm0_cti_o;
 
   assign wbm_bte_o = wbm0_bte_o;
 
   // Signals back to the master
   assign wbm0_dat_i = (wbm0_sel_o[3]) ? {wbm_dat_byte_i, 24'd0} :
		       (wbm0_sel_o[2]) ? {8'd0, wbm_dat_byte_i, 16'd0} :
		       (wbm0_sel_o[1]) ? {16'd0, wbm_dat_byte_i, 8'd0} :
	               {24'd0, wbm_dat_byte_i};
 
   assign wbm0_ack_i = wbm_ack_i;
   assign wbm0_err_i = wbm_err_i;
   assign wbm0_rty_i = wbm_rty_i;
 
`ifdef ARBITER_BYTEBUS_WATCHDOG
   reg [`ARBITER_BYTEBUS_WATCHDOG_TIMER_WIDTH:0] watchdog_timer;
   reg 			     wbm_stb_r; // Register strobe
   wire 		     wbm_stb_edge; // Detect its edge
 
   always @(posedge wb_clk)
     wbm_stb_r <= wbm_stb_o;
 
   assign wbm_stb_edge = (wbm_stb_o & !wbm_stb_r);
 
   // Counter logic
   always @(posedge wb_clk)
     if (wb_rst) watchdog_timer <= 0;
     else if (wbm_ack_i) // When we see an ack, turn off timer
       watchdog_timer <= 0;
     else if (wbm_stb_edge) // New access means start timer again
       watchdog_timer <= 1;
     else if (|watchdog_timer) // Continue counting if counter > 0
       watchdog_timer <= watchdog_timer + 1;
 
   always @(posedge wb_clk) 
     watchdog_err <= (&watchdog_timer);
 
`else // !`ifdef ARBITER_BYTEBUS_WATCHDOG
   always @(posedge wb_clk) 
     watchdog_err <= 0;
 
`endif // !`ifdef ARBITER_BYTEBUS_WATCHDOG
 
 
   // Wishbone slave mux out wires
   wire [wb_adr_width-1:0]   wbs_adr_i;
   wire [wbs_dat_width-1:0]  wbs_dat_i;
   wire 		     wbs_we_i;
   wire 		     wbs_cyc_i;
   wire 		     wbs_stb_i;
   wire [2:0] 		     wbs_cti_i;
   wire [1:0] 		     wbs_bte_i;
   wire [wbs_dat_width-1:0]  wbs_dat_o;
   wire 		     wbs_ack_o;
   wire 		     wbs_err_o;
   wire 		     wbs_rty_o;
 
 
   // Slave select wire
   wire [wb_num_slaves-1:0]  wb_slave_sel;
 
   // Slave out mux in wires   
   wire [wbs_dat_width-1:0]  wbs_dat_o_mux_i [0:wb_num_slaves-1];
   wire 		     wbs_ack_o_mux_i [0:wb_num_slaves-1];
   wire 		     wbs_err_o_mux_i [0:wb_num_slaves-1];
   wire 		     wbs_rty_o_mux_i [0:wb_num_slaves-1];
 
   // Slave selects
   assign wb_slave_sel[0] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave0_adr;
   assign wb_slave_sel[1] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave1_adr;
   assign wb_slave_sel[2] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave2_adr;
   assign wb_slave_sel[3] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave3_adr;
   assign wb_slave_sel[4] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave4_adr;
   assign wb_slave_sel[5] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave5_adr;
   assign wb_slave_sel[6] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave6_adr;
   assign wb_slave_sel[7] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave7_adr;
   assign wb_slave_sel[8] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave8_adr;
   assign wb_slave_sel[9] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave9_adr;
   assign wb_slave_sel[10] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave10_adr;
   assign wb_slave_sel[11] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave11_adr;
      /*      
   assign wb_slave_sel[12] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave12_adr;
   assign wb_slave_sel[13] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave13_adr;
   assign wb_slave_sel[14] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave14_adr;
   assign wb_slave_sel[15] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave15_adr;
   assign wb_slave_sel[16] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave16_adr;
   assign wb_slave_sel[16] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave17_adr;
   assign wb_slave_sel[16] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave18_adr;
   assign wb_slave_sel[16] = wbm_adr_o[`WB_ARB_ADDR_MATCH_SEL] == slave19_adr;
   */
 
 
   // Assign master inputs to slaves and slave inputs for MUXing  back to master
 
   // Slave 0 inputs
   assign wbs0_adr_i = wbm_adr_o;
   assign wbs0_dat_i = wbm_dat_o;
   assign wbs0_cyc_i = wbm_cyc_o & wb_slave_sel[0];
   assign wbs0_stb_i = wbm_stb_o & wb_slave_sel[0];   
   assign  wbs0_we_i =  wbm_we_o;
   assign wbs0_cti_i = wbm_cti_o;
   assign wbs0_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[0] = wbs0_dat_o;
   assign wbs_ack_o_mux_i[0] = wbs0_ack_o & wb_slave_sel[0];
   assign wbs_err_o_mux_i[0] = wbs0_err_o & wb_slave_sel[0];
   assign wbs_rty_o_mux_i[0] = wbs0_rty_o & wb_slave_sel[0];
 
 
   // Slave 1 inputs
   assign wbs1_adr_i = wbm_adr_o;
   assign wbs1_dat_i = wbm_dat_o;
   assign wbs1_cyc_i = wbm_cyc_o & wb_slave_sel[1];
   assign wbs1_stb_i = wbm_stb_o & wb_slave_sel[1];   
   assign  wbs1_we_i =  wbm_we_o;
   assign wbs1_cti_i = wbm_cti_o;
   assign wbs1_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[1] = wbs1_dat_o;
   assign wbs_ack_o_mux_i[1] = wbs1_ack_o & wb_slave_sel[1];
   assign wbs_err_o_mux_i[1] = wbs1_err_o & wb_slave_sel[1];
   assign wbs_rty_o_mux_i[1] = wbs1_rty_o & wb_slave_sel[1];
 
 
   // Slave 2 inputs
   assign wbs2_adr_i = wbm_adr_o;
   assign wbs2_dat_i = wbm_dat_o;
   assign wbs2_cyc_i = wbm_cyc_o & wb_slave_sel[2];
   assign wbs2_stb_i = wbm_stb_o & wb_slave_sel[2];   
   assign  wbs2_we_i =  wbm_we_o;
   assign wbs2_cti_i = wbm_cti_o;
   assign wbs2_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[2] = wbs2_dat_o;
   assign wbs_ack_o_mux_i[2] = wbs2_ack_o & wb_slave_sel[2];
   assign wbs_err_o_mux_i[2] = wbs2_err_o & wb_slave_sel[2];
   assign wbs_rty_o_mux_i[2] = wbs2_rty_o & wb_slave_sel[2];
 
 
   // Slave 3 inputs
   assign wbs3_adr_i = wbm_adr_o;
   assign wbs3_dat_i = wbm_dat_o;
   assign wbs3_cyc_i = wbm_cyc_o & wb_slave_sel[3];
   assign wbs3_stb_i = wbm_stb_o & wb_slave_sel[3];   
   assign  wbs3_we_i =  wbm_we_o;
   assign wbs3_cti_i = wbm_cti_o;
   assign wbs3_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[3] = wbs3_dat_o;
   assign wbs_ack_o_mux_i[3] = wbs3_ack_o & wb_slave_sel[3];
   assign wbs_err_o_mux_i[3] = wbs3_err_o & wb_slave_sel[3];
   assign wbs_rty_o_mux_i[3] = wbs3_rty_o & wb_slave_sel[3];
 
 
   // Slave 4 inputs
   assign wbs4_adr_i = wbm_adr_o;
   assign wbs4_dat_i = wbm_dat_o;
   assign wbs4_cyc_i = wbm_cyc_o & wb_slave_sel[4];
   assign wbs4_stb_i = wbm_stb_o & wb_slave_sel[4];   
   assign  wbs4_we_i =  wbm_we_o;
   assign wbs4_cti_i = wbm_cti_o;
   assign wbs4_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[4] = wbs4_dat_o;
   assign wbs_ack_o_mux_i[4] = wbs4_ack_o & wb_slave_sel[4];
   assign wbs_err_o_mux_i[4] = wbs4_err_o & wb_slave_sel[4];
   assign wbs_rty_o_mux_i[4] = wbs4_rty_o & wb_slave_sel[4];
 
 
   // Slave 5 inputs
   assign wbs5_adr_i = wbm_adr_o;
   assign wbs5_dat_i = wbm_dat_o;
   assign wbs5_cyc_i = wbm_cyc_o & wb_slave_sel[5];
   assign wbs5_stb_i = wbm_stb_o & wb_slave_sel[5];   
   assign  wbs5_we_i =  wbm_we_o;
   assign wbs5_cti_i = wbm_cti_o;
   assign wbs5_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[5] = wbs5_dat_o;
   assign wbs_ack_o_mux_i[5] = wbs5_ack_o & wb_slave_sel[5];
   assign wbs_err_o_mux_i[5] = wbs5_err_o & wb_slave_sel[5];
   assign wbs_rty_o_mux_i[5] = wbs5_rty_o & wb_slave_sel[5];
 
 
   // Slave 6 inputs
   assign wbs6_adr_i = wbm_adr_o;
   assign wbs6_dat_i = wbm_dat_o;
   assign wbs6_cyc_i = wbm_cyc_o & wb_slave_sel[6];
   assign wbs6_stb_i = wbm_stb_o & wb_slave_sel[6];   
   assign  wbs6_we_i =  wbm_we_o;
   assign wbs6_cti_i = wbm_cti_o;
   assign wbs6_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[6] = wbs6_dat_o;
   assign wbs_ack_o_mux_i[6] = wbs6_ack_o & wb_slave_sel[6];
   assign wbs_err_o_mux_i[6] = wbs6_err_o & wb_slave_sel[6];
   assign wbs_rty_o_mux_i[6] = wbs6_rty_o & wb_slave_sel[6];
 
 
   // Slave 7 inputs
   assign wbs7_adr_i = wbm_adr_o;
   assign wbs7_dat_i = wbm_dat_o;
   assign wbs7_cyc_i = wbm_cyc_o & wb_slave_sel[7];
   assign wbs7_stb_i = wbm_stb_o & wb_slave_sel[7];   
   assign  wbs7_we_i =  wbm_we_o;
   assign wbs7_cti_i = wbm_cti_o;
   assign wbs7_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[7] = wbs7_dat_o;
   assign wbs_ack_o_mux_i[7] = wbs7_ack_o & wb_slave_sel[7];
   assign wbs_err_o_mux_i[7] = wbs7_err_o & wb_slave_sel[7];
   assign wbs_rty_o_mux_i[7] = wbs7_rty_o & wb_slave_sel[7];
 
 
   // Slave 8 inputs
   assign wbs8_adr_i = wbm_adr_o;
   assign wbs8_dat_i = wbm_dat_o;
   assign wbs8_cyc_i = wbm_cyc_o & wb_slave_sel[8];
   assign wbs8_stb_i = wbm_stb_o & wb_slave_sel[8];   
   assign  wbs8_we_i =  wbm_we_o;
   assign wbs8_cti_i = wbm_cti_o;
   assign wbs8_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[8] = wbs8_dat_o;
   assign wbs_ack_o_mux_i[8] = wbs8_ack_o & wb_slave_sel[8];
   assign wbs_err_o_mux_i[8] = wbs8_err_o & wb_slave_sel[8];
   assign wbs_rty_o_mux_i[8] = wbs8_rty_o & wb_slave_sel[8];
 
 
   // Slave 9 inputs
   assign wbs9_adr_i = wbm_adr_o;
   assign wbs9_dat_i = wbm_dat_o;
   assign wbs9_cyc_i = wbm_cyc_o & wb_slave_sel[9];
   assign wbs9_stb_i = wbm_stb_o & wb_slave_sel[9];   
   assign  wbs9_we_i =  wbm_we_o;
   assign wbs9_cti_i = wbm_cti_o;
   assign wbs9_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[9] = wbs9_dat_o;
   assign wbs_ack_o_mux_i[9] = wbs9_ack_o & wb_slave_sel[9];
   assign wbs_err_o_mux_i[9] = wbs9_err_o & wb_slave_sel[9];
   assign wbs_rty_o_mux_i[9] = wbs9_rty_o & wb_slave_sel[9];
 
 
   // Slave 10 inputs
   assign wbs10_adr_i = wbm_adr_o;
   assign wbs10_dat_i = wbm_dat_o;
   assign wbs10_cyc_i = wbm_cyc_o & wb_slave_sel[10];
   assign wbs10_stb_i = wbm_stb_o & wb_slave_sel[10];   
   assign  wbs10_we_i =  wbm_we_o;
   assign wbs10_cti_i = wbm_cti_o;
   assign wbs10_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[10] = wbs10_dat_o;
   assign wbs_ack_o_mux_i[10] = wbs10_ack_o & wb_slave_sel[10];
   assign wbs_err_o_mux_i[10] = wbs10_err_o & wb_slave_sel[10];
   assign wbs_rty_o_mux_i[10] = wbs10_rty_o & wb_slave_sel[10];
 
 
   // Slave 11 inputs
   assign wbs11_adr_i = wbm_adr_o;
   assign wbs11_dat_i = wbm_dat_o;
   assign wbs11_cyc_i = wbm_cyc_o & wb_slave_sel[11];
   assign wbs11_stb_i = wbm_stb_o & wb_slave_sel[11];   
   assign  wbs11_we_i =  wbm_we_o;
   assign wbs11_cti_i = wbm_cti_o;
   assign wbs11_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[11] = wbs11_dat_o;
   assign wbs_ack_o_mux_i[11] = wbs11_ack_o & wb_slave_sel[11];
   assign wbs_err_o_mux_i[11] = wbs11_err_o & wb_slave_sel[11];
   assign wbs_rty_o_mux_i[11] = wbs11_rty_o & wb_slave_sel[11];
   /*
   // Slave 12 inputs
   assign wbs12_adr_i = wbm_adr_o;
   assign wbs12_dat_i = wbm_dat_o;
   assign wbs12_cyc_i = wbm_cyc_o & wb_slave_sel[12];
   assign wbs12_stb_i = wbm_stb_o & wb_slave_sel[12];   
   assign  wbs12_we_i =  wbm_we_o;
   assign wbs12_cti_i = wbm_cti_o;
   assign wbs12_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[12] = wbs12_dat_o;
   assign wbs_ack_o_mux_i[12] = wbs12_ack_o & wb_slave_sel[12];
   assign wbs_err_o_mux_i[12] = wbs12_err_o & wb_slave_sel[12];
   assign wbs_rty_o_mux_i[12] = wbs12_rty_o & wb_slave_sel[12];
 
 
   // Slave 13 inputs
   assign wbs13_adr_i = wbm_adr_o;
   assign wbs13_dat_i = wbm_dat_o;
   assign wbs13_cyc_i = wbm_cyc_o & wb_slave_sel[13];
   assign wbs13_stb_i = wbm_stb_o & wb_slave_sel[13];   
   assign  wbs13_we_i =  wbm_we_o;
   assign wbs13_cti_i = wbm_cti_o;
   assign wbs13_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[13] = wbs13_dat_o;
   assign wbs_ack_o_mux_i[13] = wbs13_ack_o & wb_slave_sel[13];
   assign wbs_err_o_mux_i[13] = wbs13_err_o & wb_slave_sel[13];
   assign wbs_rty_o_mux_i[13] = wbs13_rty_o & wb_slave_sel[13];
 
 
   // Slave 14 inputs
   assign wbs14_adr_i = wbm_adr_o;
   assign wbs14_dat_i = wbm_dat_o;
   assign wbs14_cyc_i = wbm_cyc_o & wb_slave_sel[14];
   assign wbs14_stb_i = wbm_stb_o & wb_slave_sel[14];   
   assign  wbs14_we_i =  wbm_we_o;
   assign wbs14_cti_i = wbm_cti_o;
   assign wbs14_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[14] = wbs14_dat_o;
   assign wbs_ack_o_mux_i[14] = wbs14_ack_o & wb_slave_sel[14];
   assign wbs_err_o_mux_i[14] = wbs14_err_o & wb_slave_sel[14];
   assign wbs_rty_o_mux_i[14] = wbs14_rty_o & wb_slave_sel[14];
 
 
   // Slave 15 inputs
   assign wbs15_adr_i = wbm_adr_o;
   assign wbs15_dat_i = wbm_dat_o;
   assign wbs15_cyc_i = wbm_cyc_o & wb_slave_sel[15];
   assign wbs15_stb_i = wbm_stb_o & wb_slave_sel[15];   
   assign  wbs15_we_i =  wbm_we_o;
   assign wbs15_cti_i = wbm_cti_o;
   assign wbs15_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[15] = wbs15_dat_o;
   assign wbs_ack_o_mux_i[15] = wbs15_ack_o & wb_slave_sel[15];
   assign wbs_err_o_mux_i[15] = wbs15_err_o & wb_slave_sel[15];
   assign wbs_rty_o_mux_i[15] = wbs15_rty_o & wb_slave_sel[15];
 
 
   // Slave 16 inputs
   assign wbs16_adr_i = wbm_adr_o;
   assign wbs16_dat_i = wbm_dat_o;
   assign wbs16_cyc_i = wbm_cyc_o & wb_slave_sel[16];
   assign wbs16_stb_i = wbm_stb_o & wb_slave_sel[16];   
   assign  wbs16_we_i =  wbm_we_o;
   assign wbs16_cti_i = wbm_cti_o;
   assign wbs16_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[16] = wbs16_dat_o;
   assign wbs_ack_o_mux_i[16] = wbs16_ack_o & wb_slave_sel[16];
   assign wbs_err_o_mux_i[16] = wbs16_err_o & wb_slave_sel[16];
   assign wbs_rty_o_mux_i[16] = wbs16_rty_o & wb_slave_sel[16];
 
 
   // Slave 17 inputs
   assign wbs17_adr_i = wbm_adr_o;
   assign wbs17_dat_i = wbm_dat_o;
   assign wbs17_cyc_i = wbm_cyc_o & wb_slave_sel[17];
   assign wbs17_stb_i = wbm_stb_o & wb_slave_sel[17];   
   assign  wbs17_we_i =  wbm_we_o;
   assign wbs17_cti_i = wbm_cti_o;
   assign wbs17_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[17] = wbs17_dat_o;
   assign wbs_ack_o_mux_i[17] = wbs17_ack_o & wb_slave_sel[17];
   assign wbs_err_o_mux_i[17] = wbs17_err_o & wb_slave_sel[17];
   assign wbs_rty_o_mux_i[17] = wbs17_rty_o & wb_slave_sel[17];
 
   // Slave 18 inputs
   assign wbs18_adr_i = wbm_adr_o;
   assign wbs18_dat_i = wbm_dat_o;
   assign wbs18_cyc_i = wbm_cyc_o & wb_slave_sel[18];
   assign wbs18_stb_i = wbm_stb_o & wb_slave_sel[18];   
   assign  wbs18_we_i =  wbm_we_o;
   assign wbs18_cti_i = wbm_cti_o;
   assign wbs18_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[18] = wbs18_dat_o;
   assign wbs_ack_o_mux_i[18] = wbs18_ack_o & wb_slave_sel[18];
   assign wbs_err_o_mux_i[18] = wbs18_err_o & wb_slave_sel[18];
   assign wbs_rty_o_mux_i[18] = wbs18_rty_o & wb_slave_sel[18];
 
   // Slave 19 inputs
   assign wbs19_adr_i = wbm_adr_o;
   assign wbs19_dat_i = wbm_dat_o;
   assign wbs19_cyc_i = wbm_cyc_o & wb_slave_sel[19];
   assign wbs19_stb_i = wbm_stb_o & wb_slave_sel[19];   
   assign  wbs19_we_i =  wbm_we_o;
   assign wbs19_cti_i = wbm_cti_o;
   assign wbs19_bte_i = wbm_bte_o;
   assign wbs_dat_o_mux_i[19] = wbs19_dat_o;
   assign wbs_ack_o_mux_i[19] = wbs19_ack_o & wb_slave_sel[19];
   assign wbs_err_o_mux_i[19] = wbs19_err_o & wb_slave_sel[19];
   assign wbs_rty_o_mux_i[19] = wbs19_rty_o & wb_slave_sel[19];
 
*/
 
 
 
   // Master out mux from slave in data
   assign wbm_dat_byte_i = wb_slave_sel[0] ? wbs_dat_o_mux_i[0] :
 		      wb_slave_sel[1] ? wbs_dat_o_mux_i[1] :
		      wb_slave_sel[2] ? wbs_dat_o_mux_i[2] :
		      wb_slave_sel[3] ? wbs_dat_o_mux_i[3] :
		      wb_slave_sel[4] ? wbs_dat_o_mux_i[4] :
		      wb_slave_sel[5] ? wbs_dat_o_mux_i[5] :
		      wb_slave_sel[6] ? wbs_dat_o_mux_i[6] :
		      wb_slave_sel[7] ? wbs_dat_o_mux_i[7] :
		      wb_slave_sel[8] ? wbs_dat_o_mux_i[8] :
		      wb_slave_sel[9] ? wbs_dat_o_mux_i[9] :
		      wb_slave_sel[10] ? wbs_dat_o_mux_i[10] :
		      wb_slave_sel[11] ? wbs_dat_o_mux_i[11] :
			   /*
		      wb_slave_sel[12] ? wbs_dat_o_mux_i[12] :
		      wb_slave_sel[13] ? wbs_dat_o_mux_i[13] :
		      wb_slave_sel[14] ? wbs_dat_o_mux_i[14] :
		      wb_slave_sel[15] ? wbs_dat_o_mux_i[15] :
		      wb_slave_sel[16] ? wbs_dat_o_mux_i[16] :
                      wb_slave_sel[17] ? wbs_dat_o_mux_i[17] :
                      wb_slave_sel[18] ? wbs_dat_o_mux_i[18] :
                      wb_slave_sel[19] ? wbs_dat_o_mux_i[19] :
*/ 
		      wbs_dat_o_mux_i[0];
   // Master out acks, or together
   assign wbm_ack_i = wbs_ack_o_mux_i[0]  |
		      wbs_ack_o_mux_i[1]  |
		      wbs_ack_o_mux_i[2]  |
		      wbs_ack_o_mux_i[3]  |
		      wbs_ack_o_mux_i[4]  |
		      wbs_ack_o_mux_i[5]  |
		      wbs_ack_o_mux_i[6]  |
		      wbs_ack_o_mux_i[7]  |
		      wbs_ack_o_mux_i[8]  |
		      wbs_ack_o_mux_i[9]  |
		      wbs_ack_o_mux_i[10] |
		      wbs_ack_o_mux_i[11] /* |
		      wbs_ack_o_mux_i[12] |
		      wbs_ack_o_mux_i[13] |		      
		      wbs_ack_o_mux_i[14] |
		      wbs_ack_o_mux_i[15] |		      
		      wbs_ack_o_mux_i[16] |
		      wbs_ack_o_mux_i[17] |
		      wbs_ack_o_mux_i[18] |
		      wbs_ack_o_mux_i[19]
		      */
		      ;
 
 
   assign wbm_err_i = wbs_err_o_mux_i[0] |
		      wbs_err_o_mux_i[1] |
		      wbs_err_o_mux_i[2] |
		      wbs_err_o_mux_i[3] |
		      wbs_err_o_mux_i[4] |
		      wbs_err_o_mux_i[5] |
		      wbs_err_o_mux_i[6] |
		      wbs_err_o_mux_i[7] |
		      wbs_err_o_mux_i[8] |
		      wbs_err_o_mux_i[9] |
		      wbs_err_o_mux_i[10] |
		      wbs_err_o_mux_i[11] |/*
		      wbs_err_o_mux_i[12] |
		      wbs_err_o_mux_i[13] |
		      wbs_err_o_mux_i[14] |
		      wbs_err_o_mux_i[15] |
		      wbs_err_o_mux_i[16] |
		      wbs_err_o_mux_i[17] |
		      wbs_err_o_mux_i[18] |
		      wbs_err_o_mux_i[19] |
		       		       */
		      watchdog_err  ;
 
 
   assign wbm_rty_i = wbs_rty_o_mux_i[0]  |
		      wbs_rty_o_mux_i[1]  |
		      wbs_rty_o_mux_i[2]  |
		      wbs_rty_o_mux_i[3]  |
		      wbs_rty_o_mux_i[4]  |
		      wbs_rty_o_mux_i[5]  |
		      wbs_rty_o_mux_i[6]  |
		      wbs_rty_o_mux_i[7]  |
		      wbs_rty_o_mux_i[8]  |
		      wbs_rty_o_mux_i[9]  |
		      wbs_rty_o_mux_i[10] |
		      wbs_rty_o_mux_i[11] /*|
		      wbs_rty_o_mux_i[12] |
		      wbs_rty_o_mux_i[13] |
		      wbs_rty_o_mux_i[14] |
		      wbs_rty_o_mux_i[15] |		       		      
		      wbs_rty_o_mux_i[16] |
		      wbs_rty_o_mux_i[17] |
		      wbs_rty_o_mux_i[18] |
		      wbs_rty_o_mux_i[19]
		       */
	              ;
 
endmodule // arbiter_bytebus