Merge FPGA repository back into UHD repository

The FPGA codebase was removed from the UHD repository in 2014 to reduce
the size of the repository. However, over the last half-decade, the
split between the repositories has proven more burdensome than it has
been helpful. By merging the FPGA code back, it will be possible to
create atomic commits that touch both FPGA and UHD codebases. Continuous
integration testing is also simplified by merging the repositories,
because it was previously difficult to automatically derive the correct
UHD branch when testing a feature branch on the FPGA repository.

This commit also updates the license files and paths therein.

We are therefore merging the repositories again. Future development for
FPGA code will happen in the same repository as the UHD host code and
MPM code.

== Original Codebase and Rebasing ==

The original FPGA repository will be hosted for the foreseeable future
at its original local location: https://github.com/EttusResearch/fpga/

It can be used for bisecting, reference, and a more detailed history.

The final commit from said repository to be merged here is
05003794e2da61cabf64dd278c45685a7abad7ec. This commit is tagged as
v4.0.0.0-pre-uhd-merge.

If you have changes in the FPGA repository that you want to rebase onto
the UHD repository, simply run the following commands:

- Create a directory to store patches (this should be an empty
  directory):

    mkdir ~/patches

- Now make sure that your FPGA codebase is based on the same state as
  the code that was merged:

    cd src/fpga # Or wherever your FPGA code is stored
    git rebase v4.0.0.0-pre-uhd-merge

  Note: The rebase command may look slightly different depending on what
  exactly you're trying to rebase.

- Create a patch set for your changes versus v4.0.0.0-pre-uhd-merge:

    git format-patch v4.0.0.0-pre-uhd-merge -o ~/patches

  Note: Make sure that only patches are stored in your output directory.
  It should otherwise be empty. Make sure that you picked the correct
  range of commits, and only commits you wanted to rebase were exported
  as patch files.

- Go to the UHD repository and apply the patches:

    cd src/uhd # Or wherever your UHD repository is stored
    git am --directory fpga ~/patches/*
    rm -rf ~/patches # This is for cleanup

== Contributors ==

The following people have contributed mainly to these files (this list
is not complete):

Co-authored-by: Alex Williams <alex.williams@ni.com>
Co-authored-by: Andrej Rode <andrej.rode@ettus.com>
Co-authored-by: Ashish Chaudhari <ashish@ettus.com>
Co-authored-by: Ben Hilburn <ben.hilburn@ettus.com>
Co-authored-by: Ciro Nishiguchi <ciro.nishiguchi@ni.com>
Co-authored-by: Daniel Jepson <daniel.jepson@ni.com>
Co-authored-by: Derek Kozel <derek.kozel@ettus.com>
Co-authored-by: EJ Kreinar <ej@he360.com>
Co-authored-by: Humberto Jimenez <humberto.jimenez@ni.com>
Co-authored-by: Ian Buckley <ian.buckley@gmail.com>
Co-authored-by: Jörg Hofrichter <joerg.hofrichter@ni.com>
Co-authored-by: Jon Kiser <jon.kiser@ni.com>
Co-authored-by: Josh Blum <josh@joshknows.com>
Co-authored-by: Jonathon Pendlum <jonathan.pendlum@ettus.com>
Co-authored-by: Martin Braun <martin.braun@ettus.com>
Co-authored-by: Matt Ettus <matt@ettus.com>
Co-authored-by: Michael West <michael.west@ettus.com>
Co-authored-by: Moritz Fischer <moritz.fischer@ettus.com>
Co-authored-by: Nick Foster <nick@ettus.com>
Co-authored-by: Nicolas Cuervo <nicolas.cuervo@ettus.com>
Co-authored-by: Paul Butler <paul.butler@ni.com>
Co-authored-by: Paul David <paul.david@ettus.com>
Co-authored-by: Ryan Marlow <ryan.marlow@ettus.com>
Co-authored-by: Sugandha Gupta <sugandha.gupta@ettus.com>
Co-authored-by: Sylvain Munaut <tnt@246tNt.com>
Co-authored-by: Trung Tran <trung.tran@ettus.com>
Co-authored-by: Vidush Vishwanath <vidush.vishwanath@ettus.com>
Co-authored-by: Wade Fife <wade.fife@ettus.com>

1 files changed, 464 insertions, 0 deletions

diff --git a/fpga/usrp2/control_lib/wb_1master.v b/fpga/usrp2/control_lib/wb_1master.v
new file mode 100644
index 000000000..fb313efae
--- /dev/null
+++ b/fpga/usrp2/control_lib/wb_1master.v
@@ -0,0 +1,464 @@
+/////////////////////////////////////////////////////////////////////
+////                                                             ////
+////  WISHBONE Connection Bus Top Level		                 ////
+////                                                             ////
+////                                                             ////
+////  Original Author: Johny Chi		                 ////
+////                   chisuhua@yahoo.com.cn                     ////
+////  Modified By Matt Ettus, matt@ettus.com                     ////
+////                                                             ////
+////                                                             ////
+/////////////////////////////////////////////////////////////////////
+////                                                              ////
+//// Copyright (C) 2000, 2007 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                     ////
+////                                                              ////
+//////////////////////////////////////////////////////////////////////
+//
+//   Up to 8 slaves share a Wishbone Bus connection to 1 master
+
+  module wb_1master
+    #(parameter	decode_w = 8,			// address decode width
+      parameter	s0_addr = 8'h0,			// slave 0 address
+      parameter	s0_mask = 8'h0,			// slave 0 don't cares
+      parameter	s1_addr = 8'h0,			// slave 1 address
+      parameter	s1_mask = 8'h0,			// slave 1 don't cares
+      parameter	s2_addr = 8'h0,			// slave 2 address
+      parameter	s2_mask = 8'h0,			// slave 2 don't cares
+      parameter	s3_addr = 8'h0,			// slave 3 address
+      parameter	s3_mask = 8'h0,			// slave 3 don't cares
+      parameter	s4_addr = 8'h0,			// slave 4 address
+      parameter	s4_mask = 8'h0,			// slave 4 don't cares
+      parameter	s5_addr = 8'h0,			// slave 5 address
+      parameter	s5_mask = 8'h0,			// slave 5 don't cares
+      parameter	s6_addr = 8'h0,			// slave 6 address
+      parameter	s6_mask = 8'h0,			// slave 6 don't cares
+      parameter	s7_addr = 8'h0,			// slave 7 address
+      parameter	s7_mask = 8'h0,			// slave 7 don't cares
+      parameter	s8_addr = 8'h0,			// slave 8 address
+      parameter	s8_mask = 8'h0,			// slave 8 don't cares
+      parameter	s9_addr = 8'h0,			// slave 9 address
+      parameter	s9_mask = 8'h0,			// slave 9 don't cares
+      parameter	sa_addr = 8'h0,			// slave a address
+      parameter	sa_mask = 8'h0,			// slave a don't cares
+      parameter	sb_addr = 8'h0,			// slave b address
+      parameter	sb_mask = 8'h0,			// slave b don't cares
+      parameter	sc_addr = 8'h0,			// slave c address
+      parameter	sc_mask = 8'h0,			// slave c don't cares
+      parameter	sd_addr = 8'h0,			// slave d address
+      parameter	sd_mask = 8'h0,			// slave d don't cares
+      parameter	se_addr = 8'h0,			// slave e address
+      parameter	se_mask = 8'h0,			// slave e don't cares
+      parameter	sf_addr = 8'h0,			// slave f address
+      parameter	sf_mask = 8'h0,			// slave f don't cares
+            
+      parameter	dw = 32,		// Data bus Width
+      parameter	aw = 32,		// Address bus Width
+      parameter	sw = 4)                 // Number of Select Lines
+      
+      (input clk_i, 
+       input rst_i,
+       
+       // Master  Interface
+       input [dw-1:0]   m0_dat_i,
+       output [dw-1:0] 	m0_dat_o,
+       input [aw-1:0] 	m0_adr_i,
+       input [sw-1:0] 	m0_sel_i,
+       input 		m0_we_i,
+       input 		m0_cyc_i,
+       input 		m0_stb_i,
+       output 		m0_ack_o,
+       output 		m0_err_o,
+       output 		m0_rty_o,
+       
+       // Slave Interfaces
+       input [dw-1:0] 	s0_dat_i,
+       output [dw-1:0] 	s0_dat_o,
+       output [aw-1:0] 	s0_adr_o,
+       output [sw-1:0] 	s0_sel_o,
+       output 		s0_we_o,
+       output 		s0_cyc_o,
+       output 		s0_stb_o,
+       input 		s0_ack_i,
+       input 		s0_err_i,
+       input 		s0_rty_i,
+       
+       input [dw-1:0] 	s1_dat_i,
+       output [dw-1:0] 	s1_dat_o,
+       output [aw-1:0] 	s1_adr_o,
+       output [sw-1:0] 	s1_sel_o,
+       output 		s1_we_o,
+       output 		s1_cyc_o,
+       output 		s1_stb_o,
+       input 		s1_ack_i,
+       input 		s1_err_i,
+       input 		s1_rty_i,
+       
+       input [dw-1:0] 	s2_dat_i,
+       output [dw-1:0] 	s2_dat_o,
+       output [aw-1:0] 	s2_adr_o,
+       output [sw-1:0] 	s2_sel_o,
+       output 		s2_we_o,
+       output 		s2_cyc_o,
+       output 		s2_stb_o,
+       input 		s2_ack_i,
+       input 		s2_err_i,
+       input 		s2_rty_i,
+       
+       input [dw-1:0] 	s3_dat_i,
+       output [dw-1:0] 	s3_dat_o,
+       output [aw-1:0] 	s3_adr_o,
+       output [sw-1:0] 	s3_sel_o,
+       output 		s3_we_o,
+       output 		s3_cyc_o,
+       output 		s3_stb_o,
+       input 		s3_ack_i,
+       input 		s3_err_i,
+       input 		s3_rty_i,
+       
+       input [dw-1:0] 	s4_dat_i,
+       output [dw-1:0] 	s4_dat_o,
+       output [aw-1:0] 	s4_adr_o,
+       output [sw-1:0] 	s4_sel_o,
+       output 		s4_we_o,
+       output 		s4_cyc_o,
+       output 		s4_stb_o,
+       input 		s4_ack_i,
+       input 		s4_err_i,
+       input 		s4_rty_i,
+       
+       input [dw-1:0] 	s5_dat_i,
+       output [dw-1:0] 	s5_dat_o,
+       output [aw-1:0] 	s5_adr_o,
+       output [sw-1:0] 	s5_sel_o,
+       output 		s5_we_o,
+       output 		s5_cyc_o,
+       output 		s5_stb_o,
+       input 		s5_ack_i,
+       input 		s5_err_i,
+       input 		s5_rty_i,
+       
+       input [dw-1:0] 	s6_dat_i,
+       output [dw-1:0] 	s6_dat_o,
+       output [aw-1:0] 	s6_adr_o,
+       output [sw-1:0] 	s6_sel_o,
+       output 		s6_we_o,
+       output 		s6_cyc_o,
+       output 		s6_stb_o,
+       input 		s6_ack_i,
+       input 		s6_err_i,
+       input 		s6_rty_i,
+       
+       input [dw-1:0] 	s7_dat_i,
+       output [dw-1:0] 	s7_dat_o,
+       output [aw-1:0] 	s7_adr_o,
+       output [sw-1:0] 	s7_sel_o,
+       output 		s7_we_o,
+       output 		s7_cyc_o,
+       output 		s7_stb_o,
+       input 		s7_ack_i,
+       input 		s7_err_i,
+       input 		s7_rty_i,
+
+       input [dw-1:0] 	s8_dat_i,
+       output [dw-1:0] 	s8_dat_o,
+       output [aw-1:0] 	s8_adr_o,
+       output [sw-1:0] 	s8_sel_o,
+       output 		s8_we_o,
+       output 		s8_cyc_o,
+       output 		s8_stb_o,
+       input 		s8_ack_i,
+       input 		s8_err_i,
+       input 		s8_rty_i,
+       
+       input [dw-1:0] 	s9_dat_i,
+       output [dw-1:0] 	s9_dat_o,
+       output [aw-1:0] 	s9_adr_o,
+       output [sw-1:0] 	s9_sel_o,
+       output 		s9_we_o,
+       output 		s9_cyc_o,
+       output 		s9_stb_o,
+       input 		s9_ack_i,
+       input 		s9_err_i,
+       input 		s9_rty_i,
+       
+       input [dw-1:0] 	sa_dat_i,
+       output [dw-1:0] 	sa_dat_o,
+       output [aw-1:0] 	sa_adr_o,
+       output [sw-1:0] 	sa_sel_o,
+       output 		sa_we_o,
+       output 		sa_cyc_o,
+       output 		sa_stb_o,
+       input 		sa_ack_i,
+       input 		sa_err_i,
+       input 		sa_rty_i,
+       
+       input [dw-1:0] 	sb_dat_i,
+       output [dw-1:0] 	sb_dat_o,
+       output [aw-1:0] 	sb_adr_o,
+       output [sw-1:0] 	sb_sel_o,
+       output 		sb_we_o,
+       output 		sb_cyc_o,
+       output 		sb_stb_o,
+       input 		sb_ack_i,
+       input 		sb_err_i,
+       input 		sb_rty_i,
+       
+       input [dw-1:0] 	sc_dat_i,
+       output [dw-1:0] 	sc_dat_o,
+       output [aw-1:0] 	sc_adr_o,
+       output [sw-1:0] 	sc_sel_o,
+       output 		sc_we_o,
+       output 		sc_cyc_o,
+       output 		sc_stb_o,
+       input 		sc_ack_i,
+       input 		sc_err_i,
+       input 		sc_rty_i,
+       
+       input [dw-1:0] 	sd_dat_i,
+       output [dw-1:0] 	sd_dat_o,
+       output [aw-1:0] 	sd_adr_o,
+       output [sw-1:0] 	sd_sel_o,
+       output 		sd_we_o,
+       output 		sd_cyc_o,
+       output 		sd_stb_o,
+       input 		sd_ack_i,
+       input 		sd_err_i,
+       input 		sd_rty_i,
+       
+       input [dw-1:0] 	se_dat_i,
+       output [dw-1:0] 	se_dat_o,
+       output [aw-1:0] 	se_adr_o,
+       output [sw-1:0] 	se_sel_o,
+       output 		se_we_o,
+       output 		se_cyc_o,
+       output 		se_stb_o,
+       input 		se_ack_i,
+       input 		se_err_i,
+       input 		se_rty_i,
+       
+       input [dw-1:0] 	sf_dat_i,
+       output [dw-1:0] 	sf_dat_o,
+       output [aw-1:0] 	sf_adr_o,
+       output [sw-1:0] 	sf_sel_o,
+       output 		sf_we_o,
+       output 		sf_cyc_o,
+       output 		sf_stb_o,
+       input 		sf_ack_i,
+       input 		sf_err_i,
+       input 		sf_rty_i
+       );
+   
+   // ////////////////////////////////////////////////////////////////
+   //
+   // Local wires
+   //
+   
+   wire [15:0] 		ssel_dec;
+   reg [dw-1:0] 	i_dat_s;	// internal share bus , slave data to master
+   
+   // Master output Interface
+   assign 		m0_dat_o = i_dat_s;
+   
+   always @*
+     case(ssel_dec)
+       1   : i_dat_s <= s0_dat_i;
+       2   : i_dat_s <= s1_dat_i;
+       4   : i_dat_s <= s2_dat_i;
+       8   : i_dat_s <= s3_dat_i;
+       16  : i_dat_s <= s4_dat_i;
+       32  : i_dat_s <= s5_dat_i;
+       64  : i_dat_s <= s6_dat_i;
+       128 : i_dat_s <= s7_dat_i;
+       256 : i_dat_s <= s8_dat_i;
+       512 : i_dat_s <= s9_dat_i;
+       1024 : i_dat_s <= sa_dat_i;
+       2048 : i_dat_s <= sb_dat_i;
+       4096 : i_dat_s <= sc_dat_i;
+       8192 : i_dat_s <= sd_dat_i;
+       16384 : i_dat_s <= se_dat_i;
+       32768 : i_dat_s <= sf_dat_i;
+       default : i_dat_s <= s0_dat_i;
+     endcase // case(ssel_dec)
+   
+   assign 		{m0_ack_o, m0_err_o, m0_rty_o} 
+     =  {s0_ack_i | s1_ack_i | s2_ack_i | s3_ack_i | s4_ack_i | s5_ack_i | s6_ack_i | s7_ack_i |
+	 s8_ack_i | s9_ack_i | sa_ack_i | sb_ack_i | sc_ack_i | sd_ack_i | se_ack_i | sf_ack_i ,
+	 s0_err_i | s1_err_i | s2_err_i | s3_err_i | s4_err_i | s5_err_i | s6_err_i | s7_err_i |
+	 s8_err_i | s9_err_i | sa_err_i | sb_err_i | sc_err_i | sd_err_i | se_err_i | sf_err_i ,
+	 s0_rty_i | s1_rty_i | s2_rty_i | s3_rty_i | s4_rty_i | s5_rty_i | s6_rty_i | s7_rty_i |
+	 s8_rty_i | s9_rty_i | sa_rty_i | sb_rty_i | sc_rty_i | sd_rty_i | se_rty_i | sf_rty_i };
+
+   // Slave output interfaces
+   assign 		s0_adr_o = m0_adr_i;
+   assign 		s0_sel_o = m0_sel_i;
+   assign 		s0_dat_o = m0_dat_i;
+   assign 		s0_we_o = m0_we_i;
+   assign 		s0_cyc_o = m0_cyc_i;
+   assign 		s0_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[0];   
+   
+   assign 		s1_adr_o = m0_adr_i;
+   assign 		s1_sel_o = m0_sel_i;
+   assign 		s1_dat_o = m0_dat_i;
+   assign 		s1_we_o = m0_we_i;
+   assign 		s1_cyc_o = m0_cyc_i;
+   assign 		s1_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[1];   
+   
+   assign 		s2_adr_o = m0_adr_i;
+   assign 		s2_sel_o = m0_sel_i;
+   assign 		s2_dat_o = m0_dat_i;
+   assign 		s2_we_o = m0_we_i;
+   assign 		s2_cyc_o = m0_cyc_i;
+   assign 		s2_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[2];   
+   
+   assign 		s3_adr_o = m0_adr_i;
+   assign 		s3_sel_o = m0_sel_i;
+   assign 		s3_dat_o = m0_dat_i;
+   assign 		s3_we_o = m0_we_i;
+   assign 		s3_cyc_o = m0_cyc_i;
+   assign 		s3_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[3];   
+   
+   assign 		s4_adr_o = m0_adr_i;
+   assign 		s4_sel_o = m0_sel_i;
+   assign 		s4_dat_o = m0_dat_i;
+   assign 		s4_we_o = m0_we_i;
+   assign 		s4_cyc_o = m0_cyc_i;
+   assign 		s4_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[4];   
+   
+   assign 		s5_adr_o = m0_adr_i;
+   assign 		s5_sel_o = m0_sel_i;
+   assign 		s5_dat_o = m0_dat_i;
+   assign 		s5_we_o = m0_we_i;
+   assign 		s5_cyc_o = m0_cyc_i;
+   assign 		s5_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[5];   
+   
+   assign 		s6_adr_o = m0_adr_i;
+   assign 		s6_sel_o = m0_sel_i;
+   assign 		s6_dat_o = m0_dat_i;
+   assign 		s6_we_o = m0_we_i;
+   assign 		s6_cyc_o = m0_cyc_i;
+   assign 		s6_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[6];   
+   
+   assign 		s7_adr_o = m0_adr_i;
+   assign 		s7_sel_o = m0_sel_i;
+   assign 		s7_dat_o = m0_dat_i;
+   assign 		s7_we_o = m0_we_i;
+   assign 		s7_cyc_o = m0_cyc_i;
+   assign 		s7_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[7];   
+   
+   assign 		s8_adr_o = m0_adr_i;
+   assign 		s8_sel_o = m0_sel_i;
+   assign 		s8_dat_o = m0_dat_i;
+   assign 		s8_we_o = m0_we_i;
+   assign 		s8_cyc_o = m0_cyc_i;
+   assign 		s8_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[8];   
+   
+   assign 		s9_adr_o = m0_adr_i;
+   assign 		s9_sel_o = m0_sel_i;
+   assign 		s9_dat_o = m0_dat_i;
+   assign 		s9_we_o = m0_we_i;
+   assign 		s9_cyc_o = m0_cyc_i;
+   assign 		s9_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[9];   
+   
+   assign 		sa_adr_o = m0_adr_i;
+   assign 		sa_sel_o = m0_sel_i;
+   assign 		sa_dat_o = m0_dat_i;
+   assign 		sa_we_o = m0_we_i;
+   assign 		sa_cyc_o = m0_cyc_i;
+   assign 		sa_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[10];   
+   
+   assign 		sb_adr_o = m0_adr_i;
+   assign 		sb_sel_o = m0_sel_i;
+   assign 		sb_dat_o = m0_dat_i;
+   assign 		sb_we_o = m0_we_i;
+   assign 		sb_cyc_o = m0_cyc_i;
+   assign 		sb_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[11];   
+   
+   assign 		sc_adr_o = m0_adr_i;
+   assign 		sc_sel_o = m0_sel_i;
+   assign 		sc_dat_o = m0_dat_i;
+   assign 		sc_we_o = m0_we_i;
+   assign 		sc_cyc_o = m0_cyc_i;
+   assign 		sc_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[12];   
+   
+   assign 		sd_adr_o = m0_adr_i;
+   assign 		sd_sel_o = m0_sel_i;
+   assign 		sd_dat_o = m0_dat_i;
+   assign 		sd_we_o = m0_we_i;
+   assign 		sd_cyc_o = m0_cyc_i;
+   assign 		sd_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[13];   
+   
+   assign 		se_adr_o = m0_adr_i;
+   assign 		se_sel_o = m0_sel_i;
+   assign 		se_dat_o = m0_dat_i;
+   assign 		se_we_o = m0_we_i;
+   assign 		se_cyc_o = m0_cyc_i;
+   assign 		se_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[14];   
+   
+   assign 		sf_adr_o = m0_adr_i;
+   assign 		sf_sel_o = m0_sel_i;
+   assign 		sf_dat_o = m0_dat_i;
+   assign 		sf_we_o = m0_we_i;
+   assign 		sf_cyc_o = m0_cyc_i;
+   assign 		sf_stb_o = m0_cyc_i & m0_stb_i & ssel_dec[15];   
+   
+   // Address decode logic
+   // WARNING -- must make sure these are mutually exclusive!
+
+
+   assign 		ssel_dec[0] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ s0_addr) & s0_mask);
+   assign 		ssel_dec[1] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ s1_addr) & s1_mask);
+   assign 		ssel_dec[2] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ s2_addr) & s2_mask);
+   assign 		ssel_dec[3] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ s3_addr) & s3_mask);
+   assign 		ssel_dec[4] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ s4_addr) & s4_mask);
+   assign 		ssel_dec[5] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ s5_addr) & s5_mask);
+   assign 		ssel_dec[6] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ s6_addr) & s6_mask);
+   assign 		ssel_dec[7] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ s7_addr) & s7_mask);
+   assign 		ssel_dec[8] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ s8_addr) & s8_mask);
+   assign 		ssel_dec[9] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ s9_addr) & s9_mask);
+   assign 		ssel_dec[10] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ sa_addr) & sa_mask);
+   assign 		ssel_dec[11] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ sb_addr) & sb_mask);
+   assign 		ssel_dec[12] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ sc_addr) & sc_mask);
+   assign 		ssel_dec[13] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ sd_addr) & sd_mask);
+   assign 		ssel_dec[14] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ se_addr) & se_mask);
+   assign 		ssel_dec[15] = ~|((m0_adr_i[aw-1:aw-decode_w] ^ sf_addr) & sf_mask);
+
+/*
+   assign 		ssel_dec[0] = (m0_adr_i[aw -1 : aw - decode_w ] == s0_addr);
+   assign 		ssel_dec[1] = (m0_adr_i[aw -1 : aw - decode_w ] == s1_addr);
+   assign 		ssel_dec[2] = (m0_adr_i[aw -1 : aw - decode_w ] == s2_addr);
+   assign 		ssel_dec[3] = (m0_adr_i[aw -1 : aw - decode_w ] == s3_addr);
+   assign 		ssel_dec[4] = (m0_adr_i[aw -1 : aw - decode_w ] == s4_addr);
+   assign 		ssel_dec[5] = (m0_adr_i[aw -1 : aw - decode_w ] == s5_addr);
+   assign 		ssel_dec[6] = (m0_adr_i[aw -1 : aw - decode_w ] == s6_addr);
+   assign 		ssel_dec[7] = (m0_adr_i[aw -1 : aw - decode_w ] == s7_addr);
+   assign 		ssel_dec[8] = (m0_adr_i[aw -1 : aw - decode_w ] == s8_addr);
+   assign 		ssel_dec[9] = (m0_adr_i[aw -1 : aw - decode_w ] == s9_addr);
+   assign 		ssel_dec[10] = (m0_adr_i[aw -1 : aw - decode_w ] == sa_addr);
+   assign 		ssel_dec[11] = (m0_adr_i[aw -1 : aw - decode_w ] == sb_addr);
+   assign 		ssel_dec[12] = (m0_adr_i[aw -1 : aw - decode_w ] == sc_addr);
+   assign 		ssel_dec[13] = (m0_adr_i[aw -1 : aw - decode_w ] == sd_addr);
+   assign 		ssel_dec[14] = (m0_adr_i[aw -1 : aw - decode_w ] == se_addr);
+   assign 		ssel_dec[15] = (m0_adr_i[aw -1 : aw - decode_w ] == sf_addr);
+ */ 
+endmodule // wb_1master