clean todos

73 files changed, 455 insertions, 3913 deletions

diff --git a/COPYING b/COPYING
new file mode 100644
index 000000000..d60c31a97
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,340 @@
+		    GNU GENERAL PUBLIC LICENSE
+		       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.
+     59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+			    Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Library General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
+in new free programs; and that you know you can do these things.
+
+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
+gratis or for a fee, you must give the recipients all the rights that
+you have.  You must make sure that they, too, receive or can get the
+source code.  And you must show them these terms so they know their
+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
+  Also, for each author's protection and ours, we want to make certain
+that everyone understands that there is no warranty for this free
+software.  If the software is modified by someone else and passed on, we
+want its recipients to know that what they have is not the original, so
+that any problems introduced by others will not reflect on the original
+authors' reputations.
+
+  Finally, any free program is threatened constantly by software
+patents.  We wish to avoid the danger that redistributors of a free
+program will individually obtain patent licenses, in effect making the
+program proprietary.  To prevent this, we have made it clear that any
+patent must be licensed for everyone's free use or not licensed at all.
+
+  The precise terms and conditions for copying, distribution and
+modification follow.
+
+		    GNU GENERAL PUBLIC LICENSE
+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
+under the terms of this General Public License.  The "Program", below,
+refers to any such program or work, and a "work based on the Program"
+means either the Program or any derivative work under copyright law:
+that is to say, a work containing the Program or a portion of it,
+either verbatim or with modifications and/or translated into another
+language.  (Hereinafter, translation is included without limitation in
+the term "modification".)  Each licensee is addressed as "you".
+
+Activities other than copying, distribution and modification are not
+covered by this License; they are outside its scope.  The act of
+running the Program is not restricted, and the output from the Program
+is covered only if its contents constitute a work based on the
+Program (independent of having been made by running the Program).
+Whether that is true depends on what the Program does.
+
+  1. You may copy and distribute verbatim copies of the Program's
+source code as you receive it, in any medium, provided that you
+conspicuously and appropriately publish on each copy an appropriate
+copyright notice and disclaimer of warranty; keep intact all the
+notices that refer to this License and to the absence of any warranty;
+and give any other recipients of the Program a copy of this License
+along with the Program.
+
+You may charge a fee for the physical act of transferring a copy, and
+you may at your option offer warranty protection in exchange for a fee.
+
+  2. You may modify your copy or copies of the Program or any portion
+of it, thus forming a work based on the Program, and copy and
+distribute such modifications or work under the terms of Section 1
+above, provided that you also meet all of these conditions:
+
+    a) You must cause the modified files to carry prominent notices
+    stating that you changed the files and the date of any change.
+
+    b) You must cause any work that you distribute or publish, that in
+    whole or in part contains or is derived from the Program or any
+    part thereof, to be licensed as a whole at no charge to all third
+    parties under the terms of this License.
+
+    c) If the modified program normally reads commands interactively
+    when run, you must cause it, when started running for such
+    interactive use in the most ordinary way, to print or display an
+    announcement including an appropriate copyright notice and a
+    notice that there is no warranty (or else, saying that you provide
+    a warranty) and that users may redistribute the program under
+    these conditions, and telling the user how to view a copy of this
+    License.  (Exception: if the Program itself is interactive but
+    does not normally print such an announcement, your work based on
+    the Program is not required to print an announcement.)
+
+These requirements apply to the modified work as a whole.  If
+identifiable sections of that work are not derived from the Program,
+and can be reasonably considered independent and separate works in
+themselves, then this License, and its terms, do not apply to those
+sections when you distribute them as separate works.  But when you
+distribute the same sections as part of a whole which is a work based
+on the Program, the distribution of the whole must be on the terms of
+this License, whose permissions for other licensees extend to the
+entire whole, and thus to each and every part regardless of who wrote it.
+
+Thus, it is not the intent of this section to claim rights or contest
+your rights to work written entirely by you; rather, the intent is to
+exercise the right to control the distribution of derivative or
+collective works based on the Program.
+
+In addition, mere aggregation of another work not based on the Program
+with the Program (or with a work based on the Program) on a volume of
+a storage or distribution medium does not bring the other work under
+the scope of this License.
+
+  3. You may copy and distribute the Program (or a work based on it,
+under Section 2) in object code or executable form under the terms of
+Sections 1 and 2 above provided that you also do one of the following:
+
+    a) Accompany it with the complete corresponding machine-readable
+    source code, which must be distributed under the terms of Sections
+    1 and 2 above on a medium customarily used for software interchange; or,
+
+    b) Accompany it with a written offer, valid for at least three
+    years, to give any third party, for a charge no more than your
+    cost of physically performing source distribution, a complete
+    machine-readable copy of the corresponding source code, to be
+    distributed under the terms of Sections 1 and 2 above on a medium
+    customarily used for software interchange; or,
+
+    c) Accompany it with the information you received as to the offer
+    to distribute corresponding source code.  (This alternative is
+    allowed only for noncommercial distribution and only if you
+    received the program in object code or executable form with such
+    an offer, in accord with Subsection b above.)
+
+The source code for a work means the preferred form of the work for
+making modifications to it.  For an executable work, complete source
+code means all the source code for all modules it contains, plus any
+associated interface definition files, plus the scripts used to
+control compilation and installation of the executable.  However, as a
+special exception, the source code distributed need not include
+anything that is normally distributed (in either source or binary
+form) with the major components (compiler, kernel, and so on) of the
+operating system on which the executable runs, unless that component
+itself accompanies the executable.
+
+If distribution of executable or object code is made by offering
+access to copy from a designated place, then offering equivalent
+access to copy the source code from the same place counts as
+distribution of the source code, even though third parties are not
+compelled to copy the source along with the object code.
+
+  4. You may not copy, modify, sublicense, or distribute the Program
+except as expressly provided under this License.  Any attempt
+otherwise to copy, modify, sublicense or distribute the Program is
+void, and will automatically terminate your rights under this License.
+However, parties who have received copies, or rights, from you under
+this License will not have their licenses terminated so long as such
+parties remain in full compliance.
+
+  5. You are not required to accept this License, since you have not
+signed it.  However, nothing else grants you permission to modify or
+distribute the Program or its derivative works.  These actions are
+prohibited by law if you do not accept this License.  Therefore, by
+modifying or distributing the Program (or any work based on the
+Program), you indicate your acceptance of this License to do so, and
+all its terms and conditions for copying, distributing or modifying
+the Program or works based on it.
+
+  6. Each time you redistribute the Program (or any work based on the
+Program), the recipient automatically receives a license from the
+original licensor to copy, distribute or modify the Program subject to
+these terms and conditions.  You may not impose any further
+restrictions on the recipients' exercise of the rights granted herein.
+You are not responsible for enforcing compliance by third parties to
+this License.
+
+  7. If, as a consequence of a court judgment or allegation of patent
+infringement or for any other reason (not limited to patent issues),
+conditions are imposed on you (whether by court order, agreement or
+otherwise) that contradict the conditions of this License, they do not
+excuse you from the conditions of this License.  If you cannot
+distribute so as to satisfy simultaneously your obligations under this
+License and any other pertinent obligations, then as a consequence you
+may not distribute the Program at all.  For example, if a patent
+license would not permit royalty-free redistribution of the Program by
+all those who receive copies directly or indirectly through you, then
+the only way you could satisfy both it and this License would be to
+refrain entirely from distribution of the Program.
+
+If any portion of this section is held invalid or unenforceable under
+any particular circumstance, the balance of the section is intended to
+apply and the section as a whole is intended to apply in other
+circumstances.
+
+It is not the purpose of this section to induce you to infringe any
+patents or other property right claims or to contest validity of any
+such claims; this section has the sole purpose of protecting the
+integrity of the free software distribution system, which is
+implemented by public license practices.  Many people have made
+generous contributions to the wide range of software distributed
+through that system in reliance on consistent application of that
+system; it is up to the author/donor to decide if he or she is willing
+to distribute software through any other system and a licensee cannot
+impose that choice.
+
+This section is intended to make thoroughly clear what is believed to
+be a consequence of the rest of this License.
+
+  8. If the distribution and/or use of the Program is restricted in
+certain countries either by patents or by copyrighted interfaces, the
+original copyright holder who places the Program under this License
+may add an explicit geographical distribution limitation excluding
+those countries, so that distribution is permitted only in or among
+countries not thus excluded.  In such case, this License incorporates
+the limitation as if written in the body of this License.
+
+  9. The Free Software Foundation may publish revised and/or new versions
+of the General Public License from time to time.  Such new versions will
+be similar in spirit to the present version, but may differ in detail to
+address new problems or concerns.
+
+Each version is given a distinguishing version number.  If the Program
+specifies a version number of this License which applies to it and "any
+later version", you have the option of following the terms and conditions
+either of that version or of any later version published by the Free
+Software Foundation.  If the Program does not specify a version number of
+this License, you may choose any version ever published by the Free Software
+Foundation.
+
+  10. If you wish to incorporate parts of the Program into other free
+programs whose distribution conditions are different, write to the author
+to ask for permission.  For software which is copyrighted by the Free
+Software Foundation, write to the Free Software Foundation; we sometimes
+make exceptions for this.  Our decision will be guided by the two goals
+of preserving the free status of all derivatives of our free software and
+of promoting the sharing and reuse of software generally.
+
+			    NO WARRANTY
+
+  11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY
+FOR THE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW.  EXCEPT WHEN
+OTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES
+PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED
+OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.  THE ENTIRE RISK AS
+TO THE QUALITY AND PERFORMANCE OF THE PROGRAM IS WITH YOU.  SHOULD THE
+PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF ALL NECESSARY SERVICING,
+REPAIR OR CORRECTION.
+
+  12. IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
+WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MAY MODIFY AND/OR
+REDISTRIBUTE THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES,
+INCLUDING ANY GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING
+OUT OF THE USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED
+TO LOSS OF DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY
+YOU OR THIRD PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER
+PROGRAMS), EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGES.
+
+		     END OF TERMS AND CONDITIONS
+
+	    How to Apply These Terms to Your New Programs
+
+  If you develop a new program, and you want it to be of the greatest
+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
+
+  To do so, attach the following notices to the program.  It is safest
+to attach them to the start of each source file to most effectively
+convey the exclusion of warranty; and each file should have at least
+the "copyright" line and a pointer to where the full notice is found.
+
+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program 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 General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+
+
+Also add information on how to contact you by electronic and paper mail.
+
+If the program is interactive, make it output a short notice like this
+when it starts in an interactive mode:
+
+    Gnomovision version 69, Copyright (C) year  name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
+
+You should also get your employer (if you work as a programmer) or your
+school, if any, to sign a "copyright disclaimer" for the program, if
+necessary.  Here is a sample; alter the names:
+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Library General
+Public License instead of this License.
diff --git a/NEWS.md b/NEWS.md
index a48904fea..64d984842 100644
--- a/NEWS.md
+++ b/NEWS.md
@@ -1,14 +1,17 @@
-**v0.34-dev**
+**0.35-dev** (XXXX-XX-XX)
+* Assert and report messages are sent to stdout (#394)
+
+**0.34** (2017-08-15)
 - Display stack backtraces on errors or assert failures
 - Compile scripts for vendor libraries (Xilinx, Altera, osvvm, vunit)
 - Use SSE2 for mcode backend
-- Mode backend ported to `x86_64`
+- mcode backend ported to `x86_64`
 - Support cocotb [potentialventures/cocotb](https://github.com/potentialventures/cocotb)
 - Main repository is now on github: [github.com/tgingold/ghdl](https://github.com/tgingold/ghdl)
 - Docs available on rtd: [ghdl.readthedocks.org](https://ghdl.readthedocs.org/en/latest/)
 - Speed improved.
 - New option `--psl-report`, to report status of PSL assert and cover.
-- VHDL2008: support nested packages
+- VHDL2008: support nested package
 
 **v0.33** (2015-10-04)
 - Improve support of VHDL2008
@@ -95,7 +98,7 @@ Never released, swith to Dunoon Edition.
 - `math_real` now works under windows.
 - documentation updated for windows.
 - filename/line number displayed for range error during signal update.
-- bug fix: 
+- bug fix:
 	- ieee math libraries available when `--ieee=synopsys`.
 	- `'image` in package bodies.
 	- scan of fp literals.
diff --git a/README.md b/README.md
index 80744cf27..e94d52957 100644
--- a/README.md
+++ b/README.md
@@ -31,21 +31,6 @@ GHDL is free software:
 
 Periodically (not regularly), several binary distributions are made available through the [releases](https://github.com/tgingold/ghdl/releases) tab. If you can't find the one matching the platform and versions you need, you can build it yourself!
 
-### Docker containers
-
-If you don't want to install the dependencies in your own filesystem, [Docker](https://www.docker.com/) containers can be used. You can have the latest version compiled and automatically placed in your current path with:
-
-```
-wget "https://raw.githubusercontent.com/tgingold/ghdl/master/dist/linux/docker-buildtest.sh"
-chmod +x docker-buildtest.sh
-./docker-buildtest.sh -i "ghdl/ghdl-tools:fedora-llvm-cmp" -b "mcode" -f "ghdl-mcode.tgz" -g
-```
-
-See '[Docker](http://ghdl.readthedocs.io/en/latest/getting/Docker.html)' for a list of available images and compiler options. You will also find images with GHDL installed already, so that you can directly start using it without caring about the platform!
-
-*If you are new to docker, keep in mind that it's not significantly different from the traditional way. Exactly the same commands are executed, but it's done in a box similar to a virtual machine.*
->>>>>>> README.md, index, WhatIsVHDL, WhatIsGHDL ready for review.
-
 ### Building GHDL
 
 In order to follow the traditional way to `configure` and `make`, you need the GNU Ada compiler, GNAT GPL, 2014 (or later) for x86 (32 or 64 bits). GNAT GPL can be downloaded anonymously from [libre.adacore.com](http://libre.adacore.com/tools/gnat-gpl-edition/). Then, untar and run the *doinstall* script.
@@ -82,4 +67,4 @@ Furthermore, each supported compiler has its pros and cons. Here is a short comp
 
 LLVM has the same pros/cons as GCC, but it is easier to build. However, coverage (`gcov`) is unique to GCC.
 
-You can find specific instructions for each of the options in '[Building](http://ghdl.readthedocs.io/en/latest/building/index.html)'.
+You can find specific instructions for each of the options in '[Building](http://ghdl.readthedocs.io/en/latest/building/Building.html)'.
diff --git a/doc/appendix/2014/index.rst b/doc/appendix/2014/index.rst
deleted file mode 100644
index 5822e67e7..000000000
--- a/doc/appendix/2014/index.rst
+++ /dev/null
@@ -1,20 +0,0 @@
-.. _CHANGE:2014:
-
-2014
-####
-
-.. contents:: Content of this page
-   :local:
-   
-.. only:: html
-
-   .. toctree::
-   
-      v0.30 <v0.30>
-      
-      
-.. only:: latex
-
-   .. toctree::
-   
-      v0.30 <v0.30>
diff --git a/doc/appendix/2014/v0.30.rst b/doc/appendix/2014/v0.30.rst
deleted file mode 100644
index 87ebef22f..000000000
--- a/doc/appendix/2014/v0.30.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-.. _CHANGE:v0.30:
-
-New in 0.30 (xx.yy.2014)
-================================================================================================================================================================
diff --git a/doc/appendix/2015/index.rst b/doc/appendix/2015/index.rst
deleted file mode 100644
index 3a3dc1ed5..000000000
--- a/doc/appendix/2015/index.rst
+++ /dev/null
@@ -1,20 +0,0 @@
-.. _CHANGE:2015:
-
-2015
-####
-
-.. contents:: Content of this page
-   :local:
-   
-.. only:: html
-
-   .. toctree::
-   
-      v0.31 <v0.31>
-      
-      
-.. only:: latex
-
-   .. toctree::
-   
-      v0.31 <v0.31>
diff --git a/doc/appendix/2015/v0.31.rst b/doc/appendix/2015/v0.31.rst
deleted file mode 100644
index 71bab8013..000000000
--- a/doc/appendix/2015/v0.31.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-.. _CHANGE:v0.31:
-
-New in 0.31 (xx.yy.2015)
-================================================================================================================================================================
diff --git a/doc/appendix/2016/index.rst b/doc/appendix/2016/index.rst
deleted file mode 100644
index 340fb915d..000000000
--- a/doc/appendix/2016/index.rst
+++ /dev/null
@@ -1,22 +0,0 @@
-.. _CHANGE:2016:
-
-2016
-####
-
-.. contents:: Content of this page
-   :local:
-   
-.. only:: html
-
-   .. toctree::
-   
-      v0.33 <v0.33>
-      v0.32 <v0.32>      
-      
-      
-.. only:: latex
-
-   .. toctree::
-   
-      v0.32 <v0.32>
-      v0.33 <v0.33>
diff --git a/doc/appendix/2016/v0.32.rst b/doc/appendix/2016/v0.32.rst
deleted file mode 100644
index ae6ff7a12..000000000
--- a/doc/appendix/2016/v0.32.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-.. _CHANGE:v0.32:
-
-New in 0.32 (xx.yy.2016)
-================================================================================================================================================================
diff --git a/doc/appendix/2016/v0.33.rst b/doc/appendix/2016/v0.33.rst
deleted file mode 100644
index 676390771..000000000
--- a/doc/appendix/2016/v0.33.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-.. _CHANGE:v0.33:
-
-New in 0.33 (xx.yy.2016)
-================================================================================================================================================================
diff --git a/doc/appendix/2017/index.rst b/doc/appendix/2017/index.rst
deleted file mode 100644
index fa4ed0f1c..000000000
--- a/doc/appendix/2017/index.rst
+++ /dev/null
@@ -1,20 +0,0 @@
-.. _CHANGE:2017:
-
-2017
-####
-
-.. contents:: Content of this page
-   :local:
-   
-.. only:: html
-
-   .. toctree::
-   
-      v0.34 <v0.34>
-      
-      
-.. only:: latex
-
-   .. toctree::
-   
-      v0.34 <v0.34>
diff --git a/doc/appendix/2017/v0.34.rst b/doc/appendix/2017/v0.34.rst
deleted file mode 100644
index 874a36728..000000000
--- a/doc/appendix/2017/v0.34.rst
+++ /dev/null
@@ -1,4 +0,0 @@
-.. _CHANGE:v0.34:
-
-New in 0.34 (xx.yy.2017)
-================================================================================================================================================================
diff --git a/doc/appendix/Changelog.rst b/doc/appendix/Changelog.rst
deleted file mode 100644
index 43367c456..000000000
--- a/doc/appendix/Changelog.rst
+++ /dev/null
@@ -1,22 +0,0 @@
-.. _CHANGE:
-
-Change Log
-##########
-
-.. only:: html
-
-   .. toctree::
-   
-      2017/index
-      2016/index
-      2015/index
-      2014/index
-
-.. only:: latex
-
-   .. toctree::
-   
-      2014/index
-      2015/index
-      2016/index
-      2017/index
diff --git a/doc/appendix/Roadmap.rst b/doc/appendix/Roadmap.rst
index 0d48c6c5c..7854e3b68 100644
--- a/doc/appendix/Roadmap.rst
+++ b/doc/appendix/Roadmap.rst
@@ -12,35 +12,5 @@ I have several axes for `GHDL` improvements:
 * Graphical tools (to see waves and to debug)
 * Style checks
 * VITAL acceleration
-
-TODOs
-=====
-
-* RTD builds fail if EPUB is activated.
-* Convert VendorPrimitives Markdown to RST
-* SVG images are not shown in the PDF. That's because LaTeX is used. Can any package be added to allow so?
-* Create a fancy Shield with a ZIP/TGZ icon, that points to the source code zip and tar.gz/tgz:
-
-   * https://github.com/tgingold/ghdl/archive/2017-03-01.zip
-   * https://github.com/tgingold/ghdl/archive/2017-03-01.tar.gz
-
-* The URL of some sections does not match the position in the hierarchy shown in the side menu. We have several options:
-
-   * Leave it as it is now.
-   * Create a new chapter in the side menu, named 'Building GHDL' and move 'Builing' and 'Precompile Vendor Primitives' there.
-   * Move 'Releases' to ch Introduction, renamed to 'Getting'. And keep 'Building', 'Vendor...' and 'Docker' in the same chapter, renamed to 'Building'.
-   
-   We are going to write more content first, and see how much we get. We'll reorder afterwards.
-   
-   [@Paebbels] I have no problem if a chapter has different URLs for sections. Users use either the web-gui / navigation bar or remember an url in the browser history, the will not see the discrepancy because the use only one access way.
-   
-Options shown in the command line help, but not found in the doc:
-
-* ``--syn-binding         use synthesis default binding rule``
-
-* VPI Commands
-
-	* ``--vpi=FILENAME        load VPI module``
-	* ``--vpi-trace[=FILE]    trace vpi calls to FILE``
 	
-.. todolist::
\ No newline at end of file
+.. todolist::
diff --git a/doc/building/Building.rst b/doc/building/Building.rst
index a8d0e6908..f8f939c57 100644
--- a/doc/building/Building.rst
+++ b/doc/building/Building.rst
@@ -7,20 +7,12 @@ Building GHDL from Sources
 
 GHDL can be downloaded as a `zip-file <https://github.com/tgingold/ghdl/archive/master.zip>`_
 (latest 'master' branch) or cloned with ``git clone`` from GitHub. GitHub
-offers HTTPS and SSH as transfer protocols. See the :ref:`Download <GETTING:Download>`
+offers HTTPS and SSH as transfer protocols. See the :ref:`RELEASE:Sources`
 page for further details. The installation directory is referred to as ``GHDLRoot``.
 
-+----------+-----------------------------------------------------------+
-| Protocol | Git Clone Command                                         |
-+==========+===========================================================+
-| HTTPS    | ``git clone https://github.com/tgingold/ghdl.git ghdl``   |
-+----------+-----------------------------------------------------------+
-| SSH      | ``git clone ssh://git@github.com:tgingold/ghdl.git ghdl`` |
-+----------+-----------------------------------------------------------+
-
 .. rubric:: Available back-ends
 
-GHDL currently supports three supported different back-ends (code generators):
+GHDL currently supports three different back-ends (code generators):
 
 * mcode - built-in x86(or x86_64) code generator,
 * `GCC - Gnu Compiler Collection <http://gcc.gnu.org/>`_, and
@@ -43,10 +35,10 @@ Here is a short comparison, so that you can choose the one you want to use:
 |                            | * Generated code can be debugged (with ``-g``)                             | * Analysis can take time (particularly for large units) |
 |                            | * Ported to many platforms (x86, x86_64, PowerPC, SPARC)                   | * Code coverage collection (``gcov``) is unique to GCC  |
 +----------------------------+----------------------------------------------------------------------------+---------------------------------------------------------+
-  
+
 .. toctree::
    :hidden:
-   
+
    Directories
    With mcode Backend <mcode/index>
    With LLVM Backend <llvm/index>
@@ -69,14 +61,3 @@ created.
    (32 or 64 bits). `GNAT GPL` can be downloaded anonymously from `libre.adacore.com <http://libre.adacore.com/tools/gnat-gpl-edition/>`_.
    Then, untar and run the doinstall script. Alternatively, most GNU/Linux
    provide a package named ``gcc-ada`` or ``gcc-gnat``.
-
-.. TODO::
-
-   * @1138 Backtraces optional -patchable-
-   * Very briefly, why is mcode faster for analysis and GCC/LLVM for simulation?
-   * The only other dependency is zlib (On ubuntu/debian, install zlib1g-dev).
-   * From :ghdlsharp:`279`:
-   * GCC: GHDL generates an intermediate representation for GCC, which creates an executable. So GHDL acts a a new language frontend like C for the GCC and uses the existing backend to generated e.g. x86(-64) binary code.
-   * LLVM: GHDL generates instructions for the LLVM abstract register machine, which then generates x86(-64) instructions for the host system.
-   * mcode: GHDL generates the x86(-64) instructions in memory and executes the model.
-     * gcc is currently only supported on Linux, because you need to compile a complete GCC from zero and add GHDL as a frontend into the GCC. Compiling the complete GCC suite plus GHDL takes a lot of time. I think it's not possible to finish the compile task in the bounds of a Travis-CI run.
diff --git a/doc/building/Directories.rst b/doc/building/Directories.rst
index 5a121ba55..36c0f2d9e 100644
--- a/doc/building/Directories.rst
+++ b/doc/building/Directories.rst
@@ -16,21 +16,21 @@ Directory Structure
     computer. These are located in ``libraries/vendor``.
     See Vendor Primitives <VendorPrimitives.html> for information on how to
     use them.
-	
+
 * ``dist``: scripts and auxiliar files to build GHDL in different
   environments:
-  
+
   * ``gcc``: header and configuration files to build GHDL with GCC (all the
     platforms).
   * ``linux``: build and test script written in shell, and other auxiliary
     files used to i) launch docker containers and ii) automate multiple builds
     in `Travis CI <https://travis-ci.org/>`_.
-  
+
   * ``windows``:
-    
+
     * ``mcode``:
-    * ``appveyor``: 
-  	
+    * ``appveyor``:
+
 * ``doc``: `Markdown` and `reStructuredText` sources and auxiliary files to
   build the documentation with `Sphinx <http://www.sphinx-doc.org>`_. Indeed,
   `Read the docs <http://readthedocs.org>`_ (RTD) is used to automatically build
@@ -48,12 +48,3 @@ Directory Structure
   (GNAT project file).
 
 * Text files: ``COPYING.md``, ``NEWS.md`` and ``README.md``.
-
-
-.. TODO::
-
-	- [@1138-4EB|@Paebbels] Replace link to VendorPrimitives, when the file is translated from md to rst.
-	
-	- [@Paebbels] Add brief description of how the content in dist/windows is ordered. From :ghdlsharp:`279`:
-		- The content in dist/appveyor is for the AppVeyor flow. AppVeyor is a continuous integration service like Travis-CI, but is offers a Windows Server 2012 R2 machine. The AppVeyor flow has more scripts than the Travis-CI flow, so we put them into a separate directory.
-		- The code in dist/windows/mcode is special code needed to build mcode in windows. mcode is supported on Linux (32/64-bit) and Windows (32-bit).
diff --git a/doc/building/TestSuites.rst b/doc/building/TestSuites.rst
deleted file mode 100644
index 609e98755..000000000
--- a/doc/building/TestSuites.rst
+++ /dev/null
@@ -1,11 +0,0 @@
-.. _BUILD:testsuites:
-	
-Test Suites
-===========
-
-.. TODO::
-
-   * @1138 explain that there are two (maybe three with vhdl08 tests)
-   	 * ``--expect-failure    invert exit status``
-   * ``--has-feature=X       test presence of feature X``
-   * ``--list-features       display the list of features``
diff --git a/doc/building/gcc/GNULinux-GNAT.rst b/doc/building/gcc/GNULinux-GNAT.rst
index e35768fdb..3733d763f 100644
--- a/doc/building/gcc/GNULinux-GNAT.rst
+++ b/doc/building/gcc/GNULinux-GNAT.rst
@@ -17,42 +17,10 @@ On Linux, GHDL is configured by ``configure`` and build by ``make``.
 .. rubric:: Example:
 
 .. code-block:: Bash
-   
+
    cd <ghdl>
    mkdir build
    cd build
    ../configure --prefix=PREFIX
    make
    sudo make install
-
-.. TODO::
-   - First configure GHDL, specify GCC source dir and :samp:`prefix` (replace :samp:`/usr/local` with your desired installation directory)::
-   
-   	./configure --with-gcc=/path/to/gcc/source/dir --prefix=/usr/local
-   	
-   - Then, invoke :samp:`make` to copy GHDL sources in the source dir::
-   
-   	make copy-sources
-   
-   .. HINT:: There are some dependencies for building GCC (:samp:`gmp`, :samp:`mpfr` and :samp:`mpc`). If you have not them installed on your system, you can either build them manually or use the :samp:`download_prerequisite` script provided in the GCC source tree (recommended): :samp:`cd /path/to/gcc/source/dir && ./contrib/download_prerequisites`
-   
-   - Then, configure GCC. The list of :samp:`--disable` configure options can be adjusted to your needs. GHDL does not require all these optional libraries and disabling them will speed-up the build::
-   
-   	../gcc-4.9.3/configure --prefix=/usr/local --enable-languages=c,vhdl \
-   	--disable-bootstrap --disable-lto --disable-multilib --disable-libssp \
-   	--disable-libgomp --disable-libquadmath ``.
-   
-   .. HINT:: Note that the prefix directory must be the same as the one used to configure GHDL. If you have manually built :samp:`gmp`/:samp:`mpfr`/:samp:`mpc` (without using the script in :samp:`contrib`) and if you have installed them in a non-standard directory, you may need to add :samp:`--with-gmp=GMP_INSTALL_DIR`.
-   
-   - Then, build and install GCC::
-   
-   	make -j2 && make install
-   
-   .. HINT:: If you don't want to install :samp:`makeinfo`, do :samp:`make install MAKEINFO=false` instead.
-   
-   - Last, build and install GHDL libraries::
-   
-   	cd /path/to/ghdl/source/dir
-   	make ghdllib
-   	make install
-   
\ No newline at end of file
diff --git a/doc/building/gcc/index.rst b/doc/building/gcc/index.rst
index 377392681..c17775e23 100644
--- a/doc/building/gcc/index.rst
+++ b/doc/building/gcc/index.rst
@@ -20,36 +20,3 @@ GCC Backend
 
    GNU/Linux with GCC/GNAT <GNULinux-GNAT>
    Windows with GCC/GNAT (MinGW) <Windows-MinGW-GNAT>
-
-	 
-	 
-.. TODO::
-
-	- You need to download and untar the sources of GCC version 4.9.x, 5.x or 6.x
-	- gcc object dir
-	- Notes for developpers developping with the GCC backend: once GCC (with GHDL) has been built once, it is possible to work on the GHDL source tree without copying it in the GCC tree. Commands are::
-	
-		$ make ghdl1-gcc           # Build the compiler
-		$ make ghdl_gcc            # Build the driver
-		$ make libs.vhdl.local_gcc # Compile the vhdl libraries
-		$ make grt-all             # Build the GHDL runtime
-		$ make grt.links           # Locally install the GHDL runtime	
-
-
-.. TODO:
-
-	Note for ppc64 (and AIX ?) platform: the object file format contains an identifier for the source language. Because gcc doesn't know about the VHDL, gcc crashes very early. This could be fixed with a very simple change in gcc/config/rs6000/rs6000.c, function rs6000_output_function_epilogue (as of gcc 4.8):
-	
-	.. CODE:: C
-	
-		else if (! strcmp (language_string, "GNU Objective-C"))
-			i = 14;
-		else
-		-  gcc_unreachable ();
-		+  i = 0;
-		fprintf (file, "%d,", i);
-
-       /* 8 single bit fields: global linkage (not set for C extern linkage,
-
-	Install file for the binary distribution of GHDL. The binary are installed in /usr/local directory.  You cannot change this default location, unless you set links. You must be root to install this distribution. To install ghdl: `tar -C / -jxvf @TARFILE@.tar.bz2`. Note: you must also have a C compiler and zlib installed.
-	 
\ No newline at end of file
diff --git a/doc/building/llvm/GNULinux-GNAT.rst b/doc/building/llvm/GNULinux-GNAT.rst
index b0f26b991..3733d763f 100644
--- a/doc/building/llvm/GNULinux-GNAT.rst
+++ b/doc/building/llvm/GNULinux-GNAT.rst
@@ -17,22 +17,10 @@ On Linux, GHDL is configured by ``configure`` and build by ``make``.
 .. rubric:: Example:
 
 .. code-block:: Bash
-   
+
    cd <ghdl>
    mkdir build
    cd build
    ../configure --prefix=PREFIX
    make
    sudo make install
-
-
-.. TODO::
-   You need to install LLVM (usually depends on :samp:`libedit`, see :ghdlsharp`29`). The supported versions are 3.5 till 3.9, but debugging is only supported with LLVM 3.5.
-
-   - First configure GHDL with the proper arg :samp:`./configure --with-llvm-config`. If :samp:`llvm-config` is not in your path, you can specify it: :samp:`./configure --with-llvm-config=LLVM_INSTALL/bin/llvm-config`.
-   
-   .. HINT::
-      If you want to have stack backtraces on errors (like assert failure or index of out bounds), you need to configure and build :samp:`libbacktrace` from GCC (you don't need to configure GCC). Then add the following arg to configure: :samp:`--with-backtrace-lib=/path-to-gcc-build/libbacktrace/.libs/libbacktrace.a`
-   
-   - Then build with :samp:`make` and install with :samp:`make install`.
-
diff --git a/doc/building/llvm/index.rst b/doc/building/llvm/index.rst
index 4f60cd083..9f0bcc98a 100644
--- a/doc/building/llvm/index.rst
+++ b/doc/building/llvm/index.rst
@@ -11,11 +11,17 @@ LLVM Backend
 
   * 3.5
   * 3.8
+  * 3.9
+  * 4.0
+  * 5.0
 
 * CLANG (Compiler front-end for LLVM)
 
   * 3.5
   * 3.8
+  * 3.9
+  * 4.0
+  * 5.0
 
 .. rubric:: Supported platforms
 
diff --git a/doc/building/mcode/index.rst b/doc/building/mcode/index.rst
index 3dc80c2f9..7d850c4a3 100644
--- a/doc/building/mcode/index.rst
+++ b/doc/building/mcode/index.rst
@@ -1,6 +1,6 @@
 .. _BUILD:mcode:
 
-Mcode Backend
+mcode Backend
 #############
 
 The mcode backend is available for all supported platforms and is also the most
diff --git a/doc/contribute.rst b/doc/contribute.rst
index a362f57e0..eaccd1560 100644
--- a/doc/contribute.rst
+++ b/doc/contribute.rst
@@ -4,23 +4,32 @@
 Contributing
 ############
 
-The first step might be to use GHDL and explore it's possibilities in an own project. If you are new to VHDL, see the :ref:`USING:QuickStart` for an introduction. Furthermore, we encourage you to read :ref:`USING:Invoking`, where the most commonly used options are explained. You can also check the complete :ref:`REF:Command`.
+The first step might be to use GHDL and explore it's possibilities in an own project. If you are new to VHDL, see the
+:ref:`USING:QuickStart` for an introduction. Furthermore, we encourage you to read :ref:`USING:Invoking`, where the most
+commonly used options are explained. You can also check the complete :ref:`REF:Command`.
 
-If you are more familiar with GHDL, you might start asking yourself how it works internally. Then, you might find :ref:`Implementation of VHDL <REF:ImplVHDL>` and :ref:`Implementation of VITAL <REF:ImplVITAL>` interesting. 
+If you are more familiar with GHDL, you might start asking yourself how it works internally. Then, you might find
+:ref:`Implementation of VHDL <REF:ImplVHDL>` and :ref:`Implementation of VITAL <REF:ImplVITAL>` interesting.
 
-While using GHDL, you might find flaws, such as bugs, missing features, typos in the documentation or topics which are still not covered. In order to improve GHDL, we welcome bug reports, suggestions and contributions for any aspect of GHDL. Either if it's a bug or an enhancement, have a look at the |SHIELD:issues-open| and |SHIELD:issues-closed| to see if someone already told us about it. You might find a solution there. To get a broader view, you can also check the :ref:`Roadmap <CHANGE>`.
+While using GHDL, you might find flaws, such as bugs, missing features, typos in the documentation or topics which are
+still not covered. In order to improve GHDL, we welcome bug reports, suggestions and contributions for any aspect of
+GHDL. Either if it's a bug or an enhancement, have a look at the |SHIELD:issues-open| and |SHIELD:issues-closed| to see
+if someone already told us about it. You might find a solution there. To get a broader view, you can also check the
+:ref:`Roadmap <CHANGE>`.
 
-If you found no information on your topic, please, report so that we are aware! You can reach us through various ways: |SHIELD:gitter|, open a |SHIELD:issues-new| and/or subscribe to |SHIELD:mailing|
+If you found no information on your topic, please, report so that we are aware! You can reach us through various ways:
+|SHIELD:gitter|, open a |SHIELD:issues-new| and/or subscribe to |SHIELD:mailing|
 
-.. HINT:: Since the development of GHDL started fifteen years ago, multiple platforms have been used as a support for both distribution and getting feedback. However, the development is now centralized in |SHIELD:gh-logo|.
+.. HINT::
+   Since the development of GHDL started fifteen years ago, multiple platforms have been used as a support for both distribution and getting feedback. However, the development is now centralized in |SHIELD:gh-logo|.
 
-	Therefore it is suggested to use the channels listed above instead of `gna.org/bugs/?=group=ghdl <https://gna.org/bugs/?group=ghdl>`_ or `sourceforge.net/p/ghdl-updates/tickets <https://sourceforge.net/p/ghdl-updates/tickets/>`_ . Still, these are checked from time to time.
+   Therefore it is suggested to use the channels listed above instead of `gna.org/bugs/?=group=ghdl <https://gna.org/bugs/?group=ghdl>`_ or `sourceforge.net/p/ghdl-updates/tickets <https://sourceforge.net/p/ghdl-updates/tickets/>`_ . Still, these are checked from time to time.
 
 .. TIP::
-	`How To Ask Questions The Smart Way <www.catb.org/~esr/faqs/smart-questions.html>`_
-	
+   `How To Ask Questions The Smart Way <www.catb.org/~esr/faqs/smart-questions.html>`_
+
 .. _reporting_bugs:
-  
+
 Reporting bugs
 ==============
 
@@ -30,31 +39,32 @@ Reporting bugs
    * If the executable created from your VHDL sources crashes, this may be a bug at runtime or the code itself may be wrong. However, since VHDL has a notion of pointers, an erroneous VHDL program (using invalid pointers for example) may crash.
    * If a compiler message is not clear enough, please tell us. The error messages can be improved, but we have not enough experience with them.
 
-Please, report issues of this kind through |SHIELD:issues-new|, as this allows us to categorize issues into groups and assign developers to them. You can track the issue’s state and see how it’s getting solved.
+Please, report issues of this kind through |SHIELD:issues-new|, as this allows us to categorize issues into groups and
+assign developers to them. You can track the issue’s state and see how it’s getting solved.
 
 .. IMPORTANT::
-   To make it easier, please elaborate a `Minimum (non) Working Example` (`MWE <https://en.wikipedia.org/wiki/Minimal_Working_Example>`_) prior to sending the report, so that the possible bug source is isolated. Shall the MWE compile and run, it is a good idea to make it look like a test and make an assert statement should finish the execution; the severity level `note` indicates success, while a severity level `failure` indicates failure. 
-   
+   To make it easier, please elaborate a `Minimum (non) Working Example` (`MWE <https://en.wikipedia.org/wiki/Minimal_Working_Example>`_) prior to sending the report, so that the possible bug source is isolated. Shall the MWE compile and run, it is a good idea to make it look like a test and make an assert statement should finish the execution; the severity level `note` indicates success, while a severity level `failure` indicates failure.
+
    Then, please include enough information for the maintainers to reproduce the problem. This includes:
-   
+
    * Operating system and version of GHDL (you can get it with :samp:`ghdl --version`).
-   * Whether you have built GHDL from sources (provide short SHA of the used commit) or used the binary distribution (teel which realease/tag).
-   
+   * Whether you have built GHDL from sources (provide short SHA of the used commit) or used the binary distribution (tell which release/tag).
+
      * If you cannot compile, please report which compiler you are using and the version.
-    
+
    * Content of the input files which make the MWE
    * Description of the problem:
-   
+
      * Comment explaining whether the MWE should compile or not; if yes, whether or not is should run until the assertion.
      * What you expected to happen and what you actually get. If you know the LRM well enough, please specify the paragraph which might be not well implemented.
      * Samples of any log.
      * Anything else that you think would be helpful.
 
-.. NOTE:: If you don't know the LRM, be aware that an issue claimed as bug report may be rejected because there is no bug according to it. GHDL aims at implementing VHDL as defined in `IEEE 1076 <http://ieeexplore.ieee.org/document/4772740/>`_. However, some other tools allow constructs which do not fully follow the standard revisions. Therefore, comparisons with other VHDL is not a solid argument. Some of them are supported by GHDL (see :ref:`IEEE_library_pitfalls`), but any such enhancement will have very low priority.
-
+.. NOTE::
+   If you don't know the LRM, be aware that an issue claimed as bug report may be rejected because there is no bug according to it. GHDL aims at implementing VHDL as defined in `IEEE 1076 <http://ieeexplore.ieee.org/document/4772740/>`_. However, some other tools allow constructs which do not fully follow the standard revisions. Therefore, comparisons with other VHDL is not a solid argument. Some of them are supported by GHDL (see :ref:`IEEE_library_pitfalls`), but any such enhancement will have very low priority.
 
 .. _requesting_enhancements:
-	
+
 Requesting enhancements
 =======================
 
@@ -65,10 +75,12 @@ All enhancements and feature requests are welcome. Please `open a new issue <htt
 Improving the documentation
 ===========================
 
-If you found a mistake in the documentation, please send a comment. If you didn't understand some parts of this manual, please tell us. English is not our mother tongue, so this documentation may not be well-written.
-
-Likewise, rewriting part of the documentation or missing content (such as, examples) is a good way to improve it. Since it automatically is built from `reStructuredText` and `Markdown` sources, you can fork, modify and request the maintainers to pull your copy. See :ref:`pull_request`.
+If you found a mistake in the documentation, please send a comment. If you didn't understand some parts of this manual,
+please tell us. English is not our mother tongue, so this documentation may not be well-written.
 
+Likewise, rewriting part of the documentation or missing content (such as, examples) is a good way to improve it. Since
+it automatically is built from `reStructuredText` and `Markdown` sources, you can fork, modify and request the
+maintainers to pull your copy. See :ref:`pull_request`.
 
 .. _pull_request:
 
@@ -77,9 +89,11 @@ Fork, modify and pull-request
 
 .. TIP::
    * Before starting any modification, you might want to have a look at |SHIELD:issues-pr| and |SHIELD:issues-pr-closed|, to check which other contributions are being made or have been made. If you observe that the modifications you are about to start might conflict with any other, please |SHIELD:gitter| or open a |SHIELD:issues-new| to coordinate.
-   * See section :ref:`'BUILD:dir_structure'` to faster find the location of the sources you need to modify, and/or to know where to place new ones.
+   * See section :ref:`BUILD:dir_structure` to faster find the location of the sources you need to modify, and/or to know where to place new ones.
 
-Contributing source code/documentation via `Git <https://git-scm.com/>`_ is very easy. Although we don't provide direct write access to our repositories, the project is hosted at GitHub, which follows a fork, edit and pull-request `flow <https://help.github.com/articles/github-flow/>`_ . That is:
+Contributing source code/documentation via `Git <https://git-scm.com/>`_ is very easy. Although we don't provide direct
+write access to our repositories, the project is hosted at GitHub, which follows a fork, edit and pull-request
+`flow <https://help.github.com/articles/github-flow/>`_ . That is:
 
 1. Make a copy (`fork <https://help.github.com/articles/fork-a-repo/>`_) of the project.
 2. Do the changes you wish (edit, add, rename, move and/or delete).
@@ -94,4 +108,4 @@ Contributing source code/documentation via `Git <https://git-scm.com/>`_ is very
 Related interesting projects
 ============================
 
-If you have an interesting project, please send us feedback or get listed on our :ref:`INTRO:WHO` page.  
+If you have an interesting project, please send us feedback or get listed on our :ref:`INTRO:WHO` page.
diff --git a/doc/getting/Docker.rst b/doc/getting/Docker.rst
deleted file mode 100644
index 6ba61dbd8..000000000
--- a/doc/getting/Docker.rst
+++ /dev/null
@@ -1,35 +0,0 @@
-.. _DOCKER:
-
-Docker containers
-#################
-
-* :ghdlsharp:`270`
-* :ghdlsharp:`272`
-* :ghdlsharp:`297`
-
-What is docker? A primer
-========================
-
-Where are images hosted?
-========================
-
-docker-hub
-ghdl-tools
-Dockerfiles
-
-Launch options
-==============
-
-With(out) shared folder
------------------------
-
-Interactive/daemon
-------------------
-
-Shrinking
----------
-
-Additional tools, with(out) GUI
--------------------------------
-
-GtkWave, PoC, VUnit, OSVVM, UVVM
\ No newline at end of file
diff --git a/doc/getting/Releases.rst b/doc/getting/Releases.rst
index 63284307a..7d3a91929 100644
--- a/doc/getting/Releases.rst
+++ b/doc/getting/Releases.rst
@@ -1,14 +1,14 @@
 .. _RELEASE:
 
-Releases
-########
+Releases and sources
+####################
 
 .. contents:: Contents of this Page
    :local:
 
 .. _RELEASE:packages:
 
-Downloading pre-build packages
+Downloading pre-built packages
 ******************************
 
 .. |Ubu1204-llvm38| image:: https://img.shields.io/github/downloads/tgingold/ghdl/2017-03-01/ghdl-0.34-dev-llvm-3.8-2017-03-01-ubu1204.tgz.svg
@@ -41,8 +41,6 @@ Downloading pre-build packages
 | Windows x86  | mcode    | 5.25 MiB  | |Win32-mcode|      |
 +--------------+----------+-----------+--------------------+
 
-
-
 .. _RELEASE:Sources:
 
 Downloading Source Files
@@ -156,17 +154,3 @@ protocol:
    git clone "ssh://git@github.com:tgingold/ghdl.git" ghdl
    cd ghdl
    git remote rename origin github
-
-
----------------------------------------------------------------------
-
-.. TODO::
- 
-   * Naming:
-      * branch ghdl-X.Y
-      * tag vX.Y
-   * stable, development, nightly
-   * Regular: ubuntu-mcode and fedora-llvm (both latest default packages).
-   * Distro checking: three distros and three compilers, nine options total. Would you add Debian? Any other?
-   * Dependency version checking: single distro and specific compiler and version pairs. Which ones? LLVM 3.5? LLVM3.9? LLVM 4? GGC 4? GCC 5?
-   * Release: does it make any sense to realease multiple distro versions, if all of them are compiled with the same dependency version? A side observation is that Fedora's release is half the size of Ubuntu's, even though both are compiled with LLVM 3.8. Why?
\ No newline at end of file
diff --git a/doc/index.rst b/doc/index.rst
index 17b95dc2e..f7c84f95d 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -17,14 +17,17 @@ LRM) is a plus.
    News
    ****
 
+   15.08.2017 - GHDL 0.34 was released.
+   ====================================
+
    23.10.2015 - GHDL 0.33 was released.
    ====================================
 
 .. only:: latex
 
-   .. rubric:: 23.10.2015 - GHDL 0.33 was released.
+   .. rubric:: 15.08.2017 - GHDL 0.34 was released.
 
-Lorem ipsum dolor sit amet...
+   .. rubric:: 23.10.2015 - GHDL 0.33 was released.
 
 .. |docdate| date:: %b %d, %Y - %H:%M
 
@@ -36,11 +39,9 @@ Lorem ipsum dolor sit amet...
    :caption: Introduction
    :hidden:
 
-   intro/WhatIsVHDL
-   intro/WhatIsGHDL
-   intro/Contributing
-   intro/Copyrights
-   License/gpl-2.0
+   about
+   contribute
+   licenses
 
 .. raw:: latex
 
@@ -63,7 +64,7 @@ Lorem ipsum dolor sit amet...
    :hidden:
 
    getting/Releases
-   Building GHDL building/building>
+   Building GHDL <building/Building>
    building/PrecompileVendorPrimitives
 
 .. raw:: latex
@@ -88,6 +89,5 @@ Lorem ipsum dolor sit amet...
    :hidden:
 
    appendix/Roadmap
-   appendix/Changelog
    appendix/Meta
    genindex
diff --git a/doc/references/CommandReference.rst b/doc/references/CommandReference.rst
index 3816afe42..16430cb72 100644
--- a/doc/references/CommandReference.rst
+++ b/doc/references/CommandReference.rst
@@ -11,8 +11,6 @@ Environment variables
 
 .. envvar:: GHDL_PREFIX
 
-	.. TODO:: Add short description to :option:`GHDL_PREFIX`
-
 Misc commands
 =============
 
@@ -34,7 +32,7 @@ for this later command are displayed::
   ghdl -h command
 
 .. index:: cmd display configuration
-  
+
 Display config [``--disp-config``]
 --------------------------------------
 
@@ -136,7 +134,7 @@ Link [``--link``]
 ---------------------
 
 .. option:: --link <[options] primary_unit [secondary_unit]>
-  
+
 Performs only the second stage of the elaboration command: the executable is created by linking the files of the object files list. This command is available only for completeness. The elaboration command is equivalent to the bind command followed by the link command.
 
 .. index:: cmd GCC/LLVM list link
@@ -176,7 +174,7 @@ Use ``COMMAND`` as the command name for the assembler.  If ``COMMAND`` is not a
 .. option:: --LINK<=COMMAND>
 
 Use ``COMMAND`` as the linker driver.  If ``COMMAND`` is not a path, then it is searched in the path.  The default is ``gcc``.
-  
+
 Passing options to other programs
 =================================
 
diff --git a/doc/using/InvokingGHDL.rst b/doc/using/InvokingGHDL.rst
index 0bfa2d969..dd50a5874 100644
--- a/doc/using/InvokingGHDL.rst
+++ b/doc/using/InvokingGHDL.rst
@@ -56,16 +56,16 @@ Re-analyzes all the configurations, entities, architectures and package declarat
 	* a configuration unit
 	* an entity unit
 	* an entity unit followed by a name of an architecture unit
-	
+
 Name of the units must be a simple name, without any dot.  You can select the name of the `WORK` library with the :option:`--work=NAME` option, as described in :ref:`GHDL_options`. See section ':ref:`Top_entity`', for the restrictions on the root design of a hierarchy.
-		
+
 * If the GCC/LLVM backend was enabled during the compilation of GHDL, the elaboration command creates an executable containing the code of the VHDL sources, the elaboration code and simulation code to execute a design hierarchy. The executable is created in the current directory and the the filename is the name of the primary unit, or for the later case, the concatenation of the name of the primary unit, a dash, and the name of the secondary unit (or architecture). Option :option:`-o` followed by a filename can override the default executable filename.
 
 * If mcode is used, this command elaborates the design but does not generate anything. Since the run command also elaborates the design, this con be skipped.
 
 
 .. index:: cmd run
- 
+
 Run [``-r``]
 ----------------
 
@@ -188,6 +188,17 @@ Generate Makefile [``--gen-makefile``]
 
 This command works like the make command (see :option:`-m`), but only a makefile is generated on the standard output.
 
+.. index:: --gen-depends command
+
+Generate dependency file command [``--gen-depends``]
+-------------------------
+
+.. option:: --gen-depends <[options] primary [secondary]>
+
+Generate a Makefile containing only dependencies to build a design unit.
+
+This command works like the make and gen-makefile commands (see :option:`-m`), but instead of a full makefile only dependencies without rules are generated on the standard output.
+Theses rules can then be integrated in another Makefile.
 
 Options
 =======
diff --git a/doc/using/QuickStartGuide.rst b/doc/using/QuickStartGuide.rst
index b390b382e..a1afa00b2 100644
--- a/doc/using/QuickStartGuide.rst
+++ b/doc/using/QuickStartGuide.rst
@@ -216,13 +216,3 @@ Unless you are only studying VHDL, you will work with larger designs than the on
    * Remove the :file:`work/` directory: ``rm -rf work``. Only the executable is kept. If you want to rebuild the design, create the :file:`work/` directory, import the sources, and make the design.
 
 .. WARNING:: Sometimes, a design does not fully follow the VHDL standards. For example it uses the badly engineered ``std_logic_unsigned`` package. GHDL supports this VHDL dialect through some options: ``--ieee=synopsys -fexplicit``. See section ':ref:`IEEE_library_pitfalls`', for more details.
-
-Further examples
-=======================
-
-.. TODO::
-
-  * Add references to examples/tutorials with GHDL.
-  * Shall `René Doß <https://mail.gna.org/public/ghdl-discuss/2017-01/msg00000.html>` want to contribute adapting his article to RST?
-  * https://github.com/Obijuan/open-fpga-verilog-tutorial/wiki
->>>>>>> doc/changelog renamed to doc/appendix
diff --git a/doc/using/Simulation.rst b/doc/using/Simulation.rst
index 968849ee7..c6f49bec7 100644
--- a/doc/using/Simulation.rst
+++ b/doc/using/Simulation.rst
@@ -102,16 +102,24 @@ all options available, including the debugging one.
 
   See section ':ref:`Backannotation`', for more details.
 
+.. option:: --vpi<=FILENAME>
+
+Load VPI module.
+
+.. option:: --vpi-trace<=FILE>
+
+Trace vpi calls to FILE.
+
 .. option:: --help
 
   Display a short description of the options accepted by the runtime library.
 
 .. _export_waves:
-  
+
 Export waveforms
 ================
 
-.. option:: --read-opt-file<=FILENAME>
+.. option:: --read-wave-opt=<FILENAME>
 
   Filter signals to be dumped to the wave file according to the wave option
   file provided.
@@ -144,7 +152,7 @@ Export waveforms
      # those of sub3)
      /**/sub3/*/*
 
-.. option:: --write-opt-file<=FILENAME>
+.. option:: --write-wave-opt=<FILENAME>
 
   If the wave option file doesn't exist, creates it with all the signals of
   the design. Otherwise throws an error, because it won't erase an existing
@@ -206,7 +214,7 @@ Export waveforms
 .. option:: --vcd-nodate
 
   Do not write date in VCD file
-  
+
 .. option:: --fst<=FILENAME>
 
   Write the waveforms into a `fst`, that can be displayed by
@@ -223,16 +231,10 @@ Export waveforms
   It may change slightly.  The ``gtkwave`` tool can read the GHW files.
 
   Contrary to VCD files, any VHDL type can be dumped into a GHW file.
- 
-.. TODO::
 
-  - Brief explanation on why these three formats where chosen only. Explain why other formats add no functionality.
-  - Interactive simulation (GtkWave) is only possible with VCD.
-  - `Source code annotation is currently not available for VHDL, however all of GTKWave's other debug features are readily accessible. VHDL support is planned for a future release`. That's something that could be added in the future, but I have no plan for it.
-  
 Export hierarchy and references
 ===============================
-  
+
 .. option:: --disp-tree<[=KIND]>
 
   .. index:: display design hierarchy
@@ -257,7 +259,7 @@ Export hierarchy and references
 
 .. option:: --no-run
 
-  Stop the simulation before the first cycle. This may be used with :option:`--disp-tree` to display the tree without simulating the whole design. This option actually elaborates the design, so it will catch any bound error in port maps. 
+  Stop the simulation before the first cycle. This may be used with :option:`--disp-tree` to display the tree without simulating the whole design. This option actually elaborates the design, so it will catch any bound error in port maps.
 
 .. option:: --xref-html <[options] file...>
 
@@ -268,16 +270,13 @@ The set of ``file`` are analyzed, and then, if the analysis is successful, html
 * If the option :option:`--format=html2` is specified, then the generated html files follow the HTML 2.0 standard, and colours are specified with `<FONT>` tags. However, colours are hard-coded.
 
 * If the option :option:`--format=css` is specified, then the generated html files follow the HTML 4.0 standard, and use the CSS-1 file :file:`ghdl.css` to specify colours. This file is generated only if it does not already exist (it is never overwritten) and can be customized by the user to change colours or appearance. Refer to a generated file and its comments for more information.
- 
+
 .. option:: --psl-report<=FILENAME>
 
 Write a report for PSL at the end of simulation. For each PSL cover and assert statements, the name, source location and whether it passed or failed is reported. The file is written using the JSON format, but still being human readable.
- 
-.. TODO::
-   * Maybe worth adding a small example of how to generate a JSON file?
- 
+
 .. option:: --file-to-xml
-  
+
 Outputs an XML representation of the decorated syntax tree for the input file and its dependencies. It can be used for VHDL tooling using semantic information, like style checkers, documentation extraction, complexity estimation...
 
 .. WARNING::
@@ -286,7 +285,7 @@ Outputs an XML representation of the decorated syntax tree for the input file an
 
 
 .. index:: debugging
-	
+
 Debugging
 =========
 
diff --git a/doc/using/UART_srcs/UART.docx b/doc/using/UART_srcs/UART.docx
deleted file mode 100644
index 201af4057..000000000
--- a/doc/using/UART_srcs/UART.docx
+++ /dev/null
diff --git a/doc/using/UART_srcs/UART_timing.jpg b/doc/using/UART_srcs/UART_timing.jpg
deleted file mode 100644
index d221aef43..000000000
--- a/doc/using/UART_srcs/UART_timing.jpg
+++ /dev/null
diff --git a/doc/using/UART_srcs/UART_timing.png b/doc/using/UART_srcs/UART_timing.png
deleted file mode 100644
index b00adb3b4..000000000
--- a/doc/using/UART_srcs/UART_timing.png
+++ /dev/null
diff --git a/doc/using/UART_srcs/UART_timing.svg b/doc/using/UART_srcs/UART_timing.svg
deleted file mode 100644
index 77bb409d5..000000000
--- a/doc/using/UART_srcs/UART_timing.svg
+++ /dev/null
@@ -1,281 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   id="svg4206"
-   version="1.1"
-   inkscape:version="0.91 r13725"
-   width="588"
-   height="277"
-   viewBox="0 0 588 277"
-   sodipodi:docname="UART_timing.svg">
-  <metadata
-     id="metadata4212">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <defs
-     id="defs4210" />
-  <sodipodi:namedview
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1"
-     objecttolerance="10"
-     gridtolerance="10"
-     guidetolerance="10"
-     inkscape:pageopacity="0"
-     inkscape:pageshadow="2"
-     inkscape:window-width="1920"
-     inkscape:window-height="1016"
-     id="namedview4208"
-     showgrid="false"
-     inkscape:zoom="1.6102313"
-     inkscape:cx="356.97138"
-     inkscape:cy="122.39625"
-     inkscape:window-x="0"
-     inkscape:window-y="27"
-     inkscape:window-maximized="1"
-     inkscape:current-layer="svg4206">
-    <inkscape:grid
-       type="xygrid"
-       id="grid4272" />
-  </sodipodi:namedview>
-  <path
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     d="m 68.313169,180.74053 c 60.239791,0 60.239791,1.24206 60.239791,1.24206 l 0,42.85099 35.39865,0 0,-43.47202 99.3646,0 0,43.47202 100.60667,0 0,-44.09305 34.15659,0 0,42.85099 32.29349,0 0,-43.47201 58.37671,0"
-     id="path4216"
-     inkscape:connector-curvature="0" />
-  <path
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     d="m 499.92819,180.74053 18.00984,0 0,43.47202 27.94629,0"
-     id="path4218"
-     inkscape:connector-curvature="0" />
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-163.42825"
-     y="155.71837"
-     id="text4220"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4222"
-       x="-163.42825"
-       y="155.71837"
-       style="font-size:25px">Start Bit</tspan></text>
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-156.69612"
-     y="187.65898"
-     id="text4224"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4226"
-       x="-156.69612"
-       y="187.65898"
-       style="font-size:25px">LSB 0</tspan></text>
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-155.82106"
-     y="220.35068"
-     id="text4228"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4230"
-       x="-155.82106"
-       y="220.35068"
-       style="font-size:25px">Bit 1</tspan></text>
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-156.35822"
-     y="253.69583"
-     id="text4232"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4234"
-       x="-156.35822"
-       y="253.69583">Bit 2</tspan></text>
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-155.67163"
-     y="287.68027"
-     id="text4236"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4238"
-       x="-155.67163"
-       y="287.68027">Bit 3</tspan></text>
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-155.76352"
-     y="321.67154"
-     id="text4240"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4242"
-       x="-155.76352"
-       y="321.67154">Bit 4</tspan></text>
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-156.06438"
-     y="356.12897"
-     id="text4244"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4246"
-       x="-156.06438"
-       y="356.12897">Bit 5</tspan></text>
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-155.62802"
-     y="387.69766"
-     id="text4248"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4250"
-       x="-155.62802"
-       y="387.69766">Bit 6</tspan></text>
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-156.52492"
-     y="422.76407"
-     id="text4252"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4254"
-       x="-156.52492"
-       y="422.76407">MSB 7</tspan></text>
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-163.18716"
-     y="458.05252"
-     id="text4256"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4258"
-       x="-163.18716"
-       y="458.05252">Stop Bit</tspan></text>
-  <text
-     transform="matrix(0,-1,1,0,0,0)"
-     sodipodi:linespacing="125%"
-     id="text4260"
-     y="542.61932"
-     x="-162.80724"
-     style="font-style:normal;font-weight:normal;font-size:40px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     xml:space="preserve"><tspan
-       style="font-size:25px"
-       y="542.61932"
-       x="-162.80724"
-       id="tspan4262"
-       sodipodi:role="line">Start Bit</tspan></text>
-  <path
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;stroke-miterlimit:4;stroke-dasharray:none"
-     d="m 486.29976,173.61561 c 0,0 8.40614,3.7777 3.27846,6.76988 -3.238,1.88949 -5.24995,3.20135 -1.24209,6.7625 l 3.64629,3.23987 0,0"
-     id="path4270"
-     inkscape:connector-curvature="0"
-     sodipodi:nodetypes="csscc" />
-  <path
-     sodipodi:nodetypes="csscc"
-     inkscape:connector-curvature="0"
-     id="path4274"
-     d="m 496.83897,173.17648 c 0,0 8.40614,3.7777 3.27846,6.76988 -3.238,1.88949 -5.24995,3.20135 -1.24209,6.7625 l 3.64629,3.23987 0,0"
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-opacity:1" />
-  <path
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;stroke-miterlimit:4;stroke-dasharray:3,3;stroke-dashoffset:0"
-     d="m 197.48716,181.36156 0,42.85099"
-     id="path4278"
-     inkscape:connector-curvature="0" />
-  <path
-     inkscape:connector-curvature="0"
-     id="path4280"
-     d="m 230.64175,181.36156 0,42.85099"
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:3, 3;stroke-dashoffset:0;stroke-opacity:1" />
-  <path
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:3, 3;stroke-dashoffset:0;stroke-opacity:1"
-     d="m 297.39007,181.36156 0,42.85099"
-     id="path4282"
-     inkscape:connector-curvature="0" />
-  <path
-     inkscape:connector-curvature="0"
-     id="path4284"
-     d="m 331.08088,181.36156 0,42.85099"
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:3, 3;stroke-dashoffset:0;stroke-opacity:1" />
-  <path
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:3, 3;stroke-dashoffset:0;stroke-opacity:1"
-     d="m 464.13839,181.36156 0,42.85099"
-     id="path4286"
-     inkscape:connector-curvature="0" />
-  <path
-     inkscape:connector-curvature="0"
-     id="path4288"
-     d="m 548.45206,181.36156 0,42.85099"
-     style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:3, 3;stroke-dashoffset:0;stroke-opacity:1" />
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-154.24739"
-     y="106.97655"
-     id="text4290"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4292"
-       x="-154.24739"
-       y="106.97655">silence</tspan></text>
-  <text
-     transform="matrix(0,-1,1,0,0,0)"
-     sodipodi:linespacing="125%"
-     id="text4294"
-     y="106.97655"
-     x="-154.24739"
-     style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     xml:space="preserve"><tspan
-       y="106.97655"
-       x="-154.24739"
-       id="tspan4296"
-       sodipodi:role="line">silence</tspan></text>
-  <text
-     xml:space="preserve"
-     style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-     x="-160.8344"
-     y="499.56207"
-     id="text4298"
-     sodipodi:linespacing="125%"
-     transform="matrix(0,-1,1,0,0,0)"><tspan
-       sodipodi:role="line"
-       id="tspan4300"
-       x="-160.8344"
-       y="499.56207">silence</tspan></text>
-</svg>
diff --git a/doc/using/UART_srcs/capitalisation/Zeichnung.svg b/doc/using/UART_srcs/capitalisation/Zeichnung.svg
deleted file mode 100644
index e64d02ab5..000000000
--- a/doc/using/UART_srcs/capitalisation/Zeichnung.svg
+++ /dev/null
@@ -1,225 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="297mm"
-   height="210mm"
-   viewBox="0 0 1052.3622 744.09448"
-   id="svg2"
-   version="1.1"
-   inkscape:version="0.91 r13725"
-   sodipodi:docname="Zeichnung.svg">
-  <defs
-     id="defs4">
-    <marker
-       inkscape:isstock="true"
-       style="overflow:visible;"
-       id="marker4462"
-       refX="0.0"
-       refY="0.0"
-       orient="auto"
-       inkscape:stockid="Arrow1Lend">
-      <path
-         transform="scale(0.8) rotate(180) translate(12.5,0)"
-         style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1;fill:#000000;fill-opacity:1"
-         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
-         id="path4464" />
-    </marker>
-    <marker
-       inkscape:stockid="Arrow1Lend"
-       orient="auto"
-       refY="0.0"
-       refX="0.0"
-       id="Arrow1Lend"
-       style="overflow:visible;"
-       inkscape:isstock="true"
-       inkscape:collect="always">
-      <path
-         id="path4183"
-         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
-         style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1;fill:#000000;fill-opacity:1"
-         transform="scale(0.8) rotate(180) translate(12.5,0)" />
-    </marker>
-  </defs>
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0.0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="1.4"
-     inkscape:cx="493.91425"
-     inkscape:cy="469.59264"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="false"
-     inkscape:window-width="1920"
-     inkscape:window-height="1016"
-     inkscape:window-x="0"
-     inkscape:window-y="27"
-     inkscape:window-maximized="1" />
-  <metadata
-     id="metadata7">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     inkscape:label="Ebene 1"
-     inkscape:groupmode="layer"
-     id="layer1"
-     transform="translate(0,-308.26772)">
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="443.14285"
-       y="623.79077"
-       id="text4136"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4138"
-         x="443.14285"
-         y="623.79077">capitalisation</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="209.99998"
-       y="623.79077"
-       id="text4140"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4142"
-         x="209.99998"
-         y="623.79077">UART_8N1_RX</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="668.00006"
-       y="623.79077"
-       id="text4144"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4146"
-         x="668.00006"
-         y="623.79077">UART_8N1TX</tspan></text>
-    <rect
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       id="rect4148"
-       width="182.85715"
-       height="70"
-       x="202.28572"
-       y="579.50507" />
-    <rect
-       y="579.50507"
-       x="426.28574"
-       height="70"
-       width="182.85715"
-       id="rect4150"
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
-    <rect
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       id="rect4152"
-       width="182.85715"
-       height="70"
-       x="650.28577"
-       y="579.50507" />
-    <rect
-       y="488.64792"
-       x="100.28571"
-       height="214.28572"
-       width="838.57147"
-       id="rect4154"
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="139.71428"
-       y="618.07648"
-       id="text4156"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4158"
-         x="139.71428"
-         y="618.07648">RX</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="849.71429"
-       y="616.93365"
-       id="text4160"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4162"
-         x="849.71429"
-         y="616.93365">TX</tspan></text>
-    <path
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker4462)"
-       d="m 132.85714,626.64792 67.14286,0"
-       id="path4164"
-       inkscape:connector-curvature="0" />
-    <path
-       inkscape:connector-curvature="0"
-       id="path4166"
-       d="m 834.85715,626.64792 67.14285,0"
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow1Lend)" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="130"
-       y="529.50507"
-       id="text4168"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4170"
-         x="130"
-         y="529.50507">top_capitalisation</tspan></text>
-    <path
-       inkscape:connector-curvature="0"
-       id="path4172"
-       d="m 385.57141,626.64789 40.35714,0"
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
-    <path
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 609.57141,626.64789 40.35714,0"
-       id="path4174"
-       inkscape:connector-curvature="0" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:17.1706295px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="-712.43713"
-       y="357.6622"
-       id="text4490"
-       sodipodi:linespacing="125%"
-       transform="matrix(0,-0.86921859,1.1504586,0,0,0)"><tspan
-         sodipodi:role="line"
-         id="tspan4492"
-         x="-712.43713"
-         y="357.6622">8bit parallel</tspan></text>
-    <text
-       transform="matrix(0,-0.86921859,1.1504586,0,0,0)"
-       sodipodi:linespacing="125%"
-       id="text4494"
-       y="553.23639"
-       x="-709.15009"
-       style="font-style:normal;font-weight:normal;font-size:17.1706295px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       xml:space="preserve"><tspan
-         y="553.23639"
-         x="-709.15009"
-         id="tspan4496"
-         sodipodi:role="line">8bit parallel</tspan></text>
-  </g>
-</svg>
diff --git a/doc/using/UART_srcs/capitalisation/capitalisation.png b/doc/using/UART_srcs/capitalisation/capitalisation.png
deleted file mode 100644
index 5b6dcbc37..000000000
--- a/doc/using/UART_srcs/capitalisation/capitalisation.png
+++ /dev/null
diff --git a/doc/using/UART_srcs/capitalisation/capitalisation.vhd b/doc/using/UART_srcs/capitalisation/capitalisation.vhd
deleted file mode 100644
index e904eda95..000000000
--- a/doc/using/UART_srcs/capitalisation/capitalisation.vhd
+++ /dev/null
@@ -1,51 +0,0 @@
--- loopback engine
-----------------------------------------------------------------------
-library IEEE;
-use IEEE.STD_LOGIC_1164.all;
-use ieee.numeric_std.all;
-
-entity capitalisation is
-  port(
-    clk        : in  std_logic;
-    reset      : in  std_logic;
-    --in
-    rdata      : in  std_logic_vector(7 downto 0);
-    rd_en      : in  std_logic;
-    rd         : out std_logic;
-    --out
-    wdata      : out std_logic_vector(7 downto 0);
-    wr_en      : in  std_logic;
-    wr         : out std_logic
-    );
-end;
-
-architecture Behavioral of capitalisation is
-
- 
-
-begin
-
-
-  process(clk)
-  begin
-      wr<='0';
-      rd<='0';
-      if wr_en='1' and rd_en ='1' then
-         wr<='1';
-         rd<='1';
-        if (unsigned(rdata)>X"60") and 
-           (unsigned(rdata)<X"7B") then
-             wdata<=rdata(7 downto 6 )&'0'& rdata(4 downto 0);
-        else
-          wdata<=rdata;
-        end if;
-      end if;
-      if reset='1' then
-        wr<='0';
-      end if;              
-  end process;
-
- 
-
-end Behavioral;
-
diff --git a/doc/using/UART_srcs/capitalisation/makefile b/doc/using/UART_srcs/capitalisation/makefile
deleted file mode 100644
index ad8a01b04..000000000
--- a/doc/using/UART_srcs/capitalisation/makefile
+++ /dev/null
@@ -1,18 +0,0 @@
-all:
-	rm -rf work
-	mkdir work
-		
-	ghdl -a  --work=work --workdir=work top_capitalisation.vhd	
-	ghdl -a  --work=work --workdir=work capitalisation.vhd	
-	ghdl -a  --work=work --workdir=work ../rx/UART_RX_8N1.vhd
-	ghdl -a  --work=work --workdir=work ../tx/UART_TX_8N1.vhd
-	ghdl -a  --work=work --workdir=work capitalisation.vhd
-			
-	ghdl -a  --work=work --workdir=work tb_capitalisation.vhd 
-	ghdl -e  --workdir=work -Pwork tb_capitalisation 
-	ghdl -r tb_capitalisation --wave=tbench.ghw --stop-time=700us 
-
-
-view:
-	gtkwave tbench.ghw a.gtkw
-
diff --git a/doc/using/UART_srcs/capitalisation/tb_capitalisation.vhd b/doc/using/UART_srcs/capitalisation/tb_capitalisation.vhd
deleted file mode 100644
index 364142946..000000000
--- a/doc/using/UART_srcs/capitalisation/tb_capitalisation.vhd
+++ /dev/null
@@ -1,89 +0,0 @@
--- tb_capitalisation.vhd
-----------------------------------------------------------------------
-library ieee;
-use ieee.std_logic_1164.all;
-use ieee.numeric_std.all;
-
-entity tb_capitalisation is
-end tb_capitalisation;
-
-architecture behavior of tb_capitalisation is
-  
-  constant board_clk_period : time := 10 ns;
-  constant board_clk_freq: integer :=100E6;   --100MHz
-
-  signal board_clk     : std_logic := '0';
-  signal reset         : std_logic := '0';
-  signal rx            : std_logic := '1';
-  signal tx            : std_logic;
-
-  procedure tx_char (signal txpin : out std_logic; 
-              txdata : in character; baudrate : in integer) is
-    constant bittime : time := (integer(1000000000.0/real(baudrate))) * 1 ns; 
-    variable c       : std_logic_vector(7 downto 0);
-  begin
-    c     := std_logic_vector(to_unsigned(character'pos(txdata), 8));
-    txpin <= '0';                       -- Startbit
-    wait for bittime;
-    for i in 0 to 7 loop
-      txpin <= c(i);
-      wait for bittime;
-    end loop;
-    txpin <= '1';                       -- Stopbit
-    wait for bittime;
-  end tx_char;
-
-  -- Component Declaration for the Unit Under Test (UUT) 
-component top_capitalisation is
-  generic (clk_freq : integer;
-           baudrate : integer);
-  port(
-    board_clk     : in std_logic ;
-    reset         : in std_logic ;
-    rx            : in std_logic ;
-    tx            : out std_logic );
-end component;
-
-begin
-  -- Instantiate the Unit Under Test (UUT)
-UART_example: top_capitalisation 
-  generic map (
-    clk_freq   => board_clk_freq,
-    baudrate   =>115200)           
-  port map(
-    board_clk     => board_clk,
-    reset         => reset,
-    rx            => rx,
-    tx            => tx );
-
-  process 
-  begin
-    wait for 80000 ns;
-      tx_char(RX, '$', 115200);
-      tx_char(RX, 'g', 115200); 
-      tx_char(RX, '#', 115200); 
-    wait for 50 us;
-      tx_char(RX, 'b', 115200);                         
-      tx_char(RX, 'c', 115200); 
-   wait;                       -- will wait forever
-   end process;
-          
-  -- Clock process definitions
-  board_clk_process : process
-  begin
-    board_clk <= '0';
-    wait for board_clk_period/2;
-      board_clk <= '1';
-    wait for board_clk_period/2;
-  end process;
-
-  -- Stimulus process
-  process
-     begin
-         reset <= '1';
-       wait for 100 ns;
-        reset <='0';   
-      wait;
-    end process;
- 
-end;
diff --git a/doc/using/UART_srcs/capitalisation/top_capitalisation.vhd b/doc/using/UART_srcs/capitalisation/top_capitalisation.vhd
deleted file mode 100644
index 01c8e3585..000000000
--- a/doc/using/UART_srcs/capitalisation/top_capitalisation.vhd
+++ /dev/null
@@ -1,126 +0,0 @@
--- top_capitalisation.vhd
-----------------------------------------------------------------------
-
--- top_capitalisation
--- |
--- + capitalisation
--- + UART_8N1_RX
--- + UART_8N1_TX
-
-library ieee;
-use ieee.std_logic_1164.all;
-use ieee.numeric_std.all;
-
-entity top_capitalisation is
-  generic (clk_freq : integer;
-           baudrate : integer);
-  port(
-    board_clk     : in std_logic ;
-    reset         : in std_logic ;
-    rx            : in std_logic ;
-    tx            : out std_logic );
-end top_capitalisation;
-
-architecture behavior of top_capitalisation is
-  signal rd_en   : std_logic;
-  signal rdata   : std_logic_vector (7 downto 0);
-  signal rd      : std_logic; 
-
-  signal wr_en   : std_logic;
-  signal wdata   : std_logic_vector (7 downto 0);
-  signal wr      : std_logic;
-
-component capitalisation is
-  port(
-    clk        : in  std_logic;
-    reset      : in  std_logic;
-    --in
-    rdata      : in  std_logic_vector(7 downto 0);
-    rd_en      : in  std_logic;
-    rd         : out std_logic;
-    --out
-    wdata      : out std_logic_vector(7 downto 0);
-    wr_en      : in  std_logic;
-    wr         : out std_logic
-    );
-end component;
-
-component UART_8N1_RX is
-  generic (clk_freq : integer;
-           baudrate : integer);
-  port(
-    clk           : in  std_logic;
-    reset         : in  std_logic;
-    --8bit interface
-    rdata         : out std_logic_vector(7 downto 0);
-    rd            : in  std_logic;
-    rd_en         : out std_logic;
-    --physical wire RX
-    rx            : in  std_logic
-    );
-end component; 
-
-component UART_8N1_TX is
-  generic(
-    clk_freq   : integer;
-    baudrate   : integer;
-    addr_depth : integer:=5); 
-  port(
-    clk        : in std_logic;
-    reset      : in std_logic;
-    --8bit  interface
-    wdata      : in  std_logic_vector(7 downto 0);
-    wr         : in  std_logic;
-    wr_en      : out std_logic;
-    
-    --physical wire
-    tx         : out std_logic);
-end component;
-
-
-begin
-
-UART_RX:UART_8N1_RX 
-  generic map (
-    clk_freq   => clk_freq,
-    baudrate   =>115200)
-  port map(
-    clk           => board_clk,
-    reset         => reset,
-    rdata         => rdata,
-    rd            => rd,
-    rd_en         => rd_en,
-    --physical wire RX
-    rx            => rx
-    );
-
-trans: capitalisation 
-  port map(
-    clk        => board_clk,
-    reset      => reset,
-    --in
-    rdata      => rdata,
-    rd_en      => rd_en,
-    rd         => rd,
-    --out
-    wdata      => wdata,
-    wr_en      => wr_en,
-    wr         => wr
-    );
-
-UART_TX: UART_8N1_TX 
-  generic map(
-    clk_freq   => clk_freq,
-    baudrate   => 115200) 
-  port map(
-    clk        => board_clk,
-    reset      => reset,
-    --8bit  interface
-    wdata      => wdata,
-    wr         => wr,
-    wr_en      => wr_en,
-    
-    --physical wire TX
-    tx         => tx
-    );
-end;
diff --git a/doc/using/UART_srcs/capitalisation/zeichnung.png b/doc/using/UART_srcs/capitalisation/zeichnung.png
deleted file mode 100644
index f51a0fbdd..000000000
--- a/doc/using/UART_srcs/capitalisation/zeichnung.png
+++ /dev/null
diff --git a/doc/using/UART_srcs/file_in_out/Zeichnung.svg b/doc/using/UART_srcs/file_in_out/Zeichnung.svg
deleted file mode 100644
index ae9e85d86..000000000
--- a/doc/using/UART_srcs/file_in_out/Zeichnung.svg
+++ /dev/null
@@ -1,290 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="297mm"
-   height="210mm"
-   viewBox="0 0 1052.3622 744.09448"
-   id="svg2"
-   version="1.1"
-   inkscape:version="0.91 r13725"
-   sodipodi:docname="Zeichnung.svg"
-   inkscape:export-filename="/home/red/artikel_uart/capitalisation/zeichnung.png"
-   inkscape:export-xdpi="90"
-   inkscape:export-ydpi="90">
-  <defs
-     id="defs4">
-    <marker
-       inkscape:stockid="Arrow1Lend"
-       orient="auto"
-       refY="0.0"
-       refX="0.0"
-       id="marker5517"
-       style="overflow:visible;"
-       inkscape:isstock="true">
-      <path
-         id="path5519"
-         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
-         style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1;fill:#000000;fill-opacity:1"
-         transform="scale(0.8) rotate(180) translate(12.5,0)" />
-    </marker>
-    <marker
-       inkscape:isstock="true"
-       style="overflow:visible;"
-       id="marker5229"
-       refX="0.0"
-       refY="0.0"
-       orient="auto"
-       inkscape:stockid="Arrow1Lend"
-       inkscape:collect="always">
-      <path
-         transform="scale(0.8) rotate(180) translate(12.5,0)"
-         style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1;fill:#000000;fill-opacity:1"
-         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
-         id="path5231" />
-    </marker>
-    <marker
-       inkscape:isstock="true"
-       style="overflow:visible;"
-       id="marker4462"
-       refX="0.0"
-       refY="0.0"
-       orient="auto"
-       inkscape:stockid="Arrow1Lend"
-       inkscape:collect="always">
-      <path
-         transform="scale(0.8) rotate(180) translate(12.5,0)"
-         style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1;fill:#000000;fill-opacity:1"
-         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
-         id="path4464" />
-    </marker>
-    <marker
-       inkscape:stockid="Arrow1Lend"
-       orient="auto"
-       refY="0.0"
-       refX="0.0"
-       id="Arrow1Lend"
-       style="overflow:visible;"
-       inkscape:isstock="true"
-       inkscape:collect="always">
-      <path
-         id="path4183"
-         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
-         style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1;fill:#000000;fill-opacity:1"
-         transform="scale(0.8) rotate(180) translate(12.5,0)" />
-    </marker>
-  </defs>
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0.0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="0.98994949"
-     inkscape:cx="501.72415"
-     inkscape:cy="479.92169"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="false"
-     inkscape:window-width="1920"
-     inkscape:window-height="1016"
-     inkscape:window-x="0"
-     inkscape:window-y="27"
-     inkscape:window-maximized="1" />
-  <metadata
-     id="metadata7">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     inkscape:label="Ebene 1"
-     inkscape:groupmode="layer"
-     id="layer1"
-     transform="translate(0,-308.26772)">
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="443.14285"
-       y="623.79077"
-       id="text4136"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4138"
-         x="443.14285"
-         y="623.79077">capitalisation</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="209.99998"
-       y="623.79077"
-       id="text4140"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4142"
-         x="209.99998"
-         y="623.79077">UART_8N1_RX</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="668.00006"
-       y="623.79077"
-       id="text4144"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4146"
-         x="668.00006"
-         y="623.79077">UART_8N1TX</tspan></text>
-    <rect
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       id="rect4148"
-       width="182.85715"
-       height="70"
-       x="202.28572"
-       y="579.50507" />
-    <rect
-       y="579.50507"
-       x="426.28574"
-       height="70"
-       width="182.85715"
-       id="rect4150"
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
-    <rect
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       id="rect4152"
-       width="182.85715"
-       height="70"
-       x="650.28577"
-       y="579.50507" />
-    <rect
-       y="488.64792"
-       x="100.28571"
-       height="214.28572"
-       width="838.57147"
-       id="rect4154"
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="139.71428"
-       y="618.07648"
-       id="text4156"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4158"
-         x="139.71428"
-         y="618.07648">RX</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="849.71429"
-       y="616.93365"
-       id="text4160"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4162"
-         x="849.71429"
-         y="616.93365">TX</tspan></text>
-    <path
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker4462)"
-       d="m 55.075395,626.64791 142.871835,0"
-       id="path4164"
-       inkscape:connector-curvature="0" />
-    <path
-       inkscape:connector-curvature="0"
-       id="path4166"
-       d="m 834.85716,626.64794 142.87183,0"
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow1Lend)" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="693.68311"
-       y="522.13812"
-       id="text4168"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4170"
-         x="693.68311"
-         y="522.13812">top_capitalisation</tspan></text>
-    <path
-       inkscape:connector-curvature="0"
-       id="path4172"
-       d="m 385.57141,626.64789 40.35714,0"
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
-    <path
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 609.57141,626.64789 40.35714,0"
-       id="path4174"
-       inkscape:connector-curvature="0" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:17.1706295px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="-712.43713"
-       y="357.6622"
-       id="text4490"
-       sodipodi:linespacing="125%"
-       transform="matrix(0,-0.86921859,1.1504586,0,0,0)"><tspan
-         sodipodi:role="line"
-         id="tspan4492"
-         x="-712.43713"
-         y="357.6622">8bit parallel</tspan></text>
-    <text
-       transform="matrix(0,-0.86921859,1.1504586,0,0,0)"
-       sodipodi:linespacing="125%"
-       id="text4494"
-       y="553.23639"
-       x="-709.15009"
-       style="font-style:normal;font-weight:normal;font-size:17.1706295px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       xml:space="preserve"><tspan
-         y="553.23639"
-         x="-709.15009"
-         id="tspan4496"
-         sodipodi:role="line">8bit parallel</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="110.25892"
-       y="516.77045"
-       id="text4517"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4519"
-         x="110.25892"
-         y="516.77045">board_clk</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="114.15372"
-       y="548.17877"
-       id="text4521"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4523"
-         x="114.15372"
-         y="548.17877">reset</tspan></text>
-    <path
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker5229)"
-       d="m 58.131259,544.64792 40.588544,0"
-       id="path5227"
-       inkscape:connector-curvature="0" />
-    <path
-       inkscape:connector-curvature="0"
-       id="path5515"
-       d="m 58.131259,508.64792 40.588544,0"
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#marker5517)" />
-  </g>
-</svg>
diff --git a/doc/using/UART_srcs/file_in_out/makefile b/doc/using/UART_srcs/file_in_out/makefile
deleted file mode 100644
index e7ee72400..000000000
--- a/doc/using/UART_srcs/file_in_out/makefile
+++ /dev/null
@@ -1,13 +0,0 @@
-all:
-	rm -rf work
-	mkdir work
-		
-	ghdl -a  --work=work --workdir=work ../capitalisation/capitalisation.vhd	
-	ghdl -a  --work=work --workdir=work tb_file.vhd 
-	ghdl -e    --ieee=synopsys -fexplicit --workdir=work -Pwork tb_file 
-	ghdl -r tb_file  --wave=tbench.ghw  --stop-time=200us
-
-
-view:
-	gtkwave tbench.ghw a.gtkw
-
diff --git a/doc/using/UART_srcs/file_in_out/tb_file.vhd b/doc/using/UART_srcs/file_in_out/tb_file.vhd
deleted file mode 100644
index fe18f6665..000000000
--- a/doc/using/UART_srcs/file_in_out/tb_file.vhd
+++ /dev/null
@@ -1,142 +0,0 @@
---tb_file.vhd
-------------------------------------------------------------------------
-LIBRARY ieee;
-USE ieee.std_logic_1164.ALL;
-USE ieee.numeric_std.ALL;
-
-ENTITY tb_file IS
-END tb_file;
---vhdl no seek or rewind function in VHDL
- 
-ARCHITECTURE behavior OF tb_file IS 
- 
-signal clk          : std_logic := '0';
-signal reset        : std_logic;
-
-signal rdata     	: std_logic_vector(7 downto 0);
-signal rd_en        : std_logic;
-signal rd           : std_logic;
-
-signal wdata        : std_logic_vector(7 downto 0);
-signal wr_en        : std_logic:='1';
-signal wr           : std_logic;
-
-    -- Component Declaration for the Unit Under Test (UUT)
-component capitalisation is
-  port(
-    clk        : in  std_logic;
-    reset      : in  std_logic;
-    --in
-    rdata      : in  std_logic_vector(7 downto 0);
-    rd_en      : in  std_logic;
-    rd         : out std_logic;
-    --out
-    wdata      : out std_logic_vector(7 downto 0);
-    wr_en      : in  std_logic;
-    wr         : out std_logic
-    );
-end component;
-
-   -- Clock period definitions
-   constant clk_period : time := 10 ns;
- 
-subtype by_te is character;
-type f_byte is file of by_te;
-
-BEGIN
-
-process(clk)
-begin
-  if rising_edge (clk) then
-    if reset='0' then
-      wr_en<='1';
-    else
-      wr_en<='0';
-    end if;
-  end if;
-end process;
-
---read a file
-process (reset,clk)
-constant file_name: string:="test.txt";
-file in_file: f_byte open read_mode is file_name;
-
-variable a:character;
-    
-begin
-  if reset='1' then
-    rd_en<='0';
-  else
-  
-    if rising_edge(clk) then
-      if rd_en='0' or rd='1' then    
-        if not endfile (in_file) then
-          read(in_file,a);
-          rdata<=std_logic_vector(to_unsigned(character'pos(a),8));
-          --very tricky the conversation
-          rd_en<='1';
-        else
-          rd_en<='0';
-        end if;
-      end if;
-    end if;
-       --wait until rising_edge(CLK) and rd='1';
-  end if;  
-end process;
-
-
-
---write a file
-process (clk)
-constant file_name: string:="test1.txt";
-file out_file: f_byte open write_mode is file_name;
-
-----variable in_line,out_line: line;
-variable b:character;
-
-  begin 
-    if rising_edge(CLK) then
-      if reset='0' then
-        if wr='1' then
-          b:=character'val(to_integer(unsigned(wdata)));
-          write(out_file,b);
-        end if;
-      end if;
-    end if;
-  end process;
-
-   stim_proc : process
-     begin
-       reset <= '1';
-
-      wait for 50 ns;
-         reset <='0'; 
-
-      wait;
-    end process;
-
-  clk_process :process
-   begin
-		clk <= '0';
-		wait for clk_period/2;
-		clk <= '1';
-		wait for clk_period/2;
-   end process;
-
-engine: capitalisation 
-  port map(
- 
-    clk        => clk,
-    reset      => reset,
-     
-    rdata      => rdata,
-    rd_en      => rd_en,
-    rd         => rd,
-    
-    wdata      => wdata,
-    wr_en      => wr_en,
-    wr         => wr 
-     );
-
-
-END;
diff --git a/doc/using/UART_srcs/file_in_out/test.txt b/doc/using/UART_srcs/file_in_out/test.txt
deleted file mode 100644
index 3ee58d9a3..000000000
--- a/doc/using/UART_srcs/file_in_out/test.txt
+++ /dev/null
@@ -1 +0,0 @@
-Hallo world! Can you see my text?
diff --git a/doc/using/UART_srcs/file_in_out/test1.txt b/doc/using/UART_srcs/file_in_out/test1.txt
deleted file mode 100644
index a868f3f93..000000000
--- a/doc/using/UART_srcs/file_in_out/test1.txt
+++ /dev/null
@@ -1 +0,0 @@
-HALLO WORLD! CAN YOU SEE MY TEXT?
diff --git a/doc/using/UART_srcs/file_in_out/zeichnung.png b/doc/using/UART_srcs/file_in_out/zeichnung.png
deleted file mode 100644
index e849417f4..000000000
--- a/doc/using/UART_srcs/file_in_out/zeichnung.png
+++ /dev/null
diff --git a/doc/using/UART_srcs/rx/UART_RX_8N1.vhd b/doc/using/UART_srcs/rx/UART_RX_8N1.vhd
deleted file mode 100644
index a7fe757a5..000000000
--- a/doc/using/UART_srcs/rx/UART_RX_8N1.vhd
+++ /dev/null
@@ -1,150 +0,0 @@
--- UART_RX_8N1.vhd
-----------------------------------------------------------------------
-library IEEE;
-use IEEE.STD_LOGIC_1164.all;
-use ieee.numeric_std.all;
-
-
-entity UART_8N1_RX is
-
-  generic (clk_freq : integer;
-           baudrate : integer);
-  port(
-    clk           : in  std_logic;
-    reset         : in  std_logic;
-    --8bit interface
-    rdata         : out std_logic_vector(7 downto 0);
-    rd            : in  std_logic;
-    rd_en         : out std_logic;
-    --physical wire RX
-    rx            : in  std_logic
-    );
-end UART_8N1_RX;
-
-
-architecture Behavioral of UART_8N1_RX is
-
-  type   state_type is (idle, start, data0, data1, data2, data3, data4,
-   data5, data6, data7, stop);
-  signal state : state_type;
-
-  signal puffer : std_logic_vector (7 downto 0);
-
---FIFO
-  type RAM is array (0 to 63) of std_logic_vector (7 downto 0);
-
-  signal fifo : RAM ;
-
-  signal nextwrite    : unsigned(5 downto 0);
-  signal nextread     : unsigned(5 downto 0);
-
-  constant tick       : integer := clk_freq/baudrate;
-  signal tick_counter : integer range 0 to (tick+1);
- 
-
-begin
-  
-  rdata  <= fifo(to_integer(nextread));
-  
-  process (clk)
-  begin
-    if rising_edge(clk) then
-      if rd = '1'  then
-        nextread <= nextread+1;
-      end if;
-      if reset = '1' then 
-        nextread <= (others => '0');
-      end if;			  
-    end if;
-  end process;
-
- rd_en<= '0' when  nextread=nextwrite else '1';
- 
-
-  process(clk)
-  begin
-    
-    if (clk'event and clk = '1') then
-      tick_counter <= tick_counter + 1;
-
-      case state is
-        
-        when idle =>
-          tick_counter <= 0;
-          if (rx = '0') then  --check start condtion
-            state <= start;
-          else
-            state <= idle;
-          end if;
-            
-        when start =>
-          if (tick_counter = tick/2) then  --capture in the middle
-            tick_counter <= 0;
-            state        <= data0;
-          end if;
-          
-        when data0 =>
-          if (tick_counter = tick) then
-            puffer (0)   <= rx;
-            tick_counter <= 0;
-            state        <= data1;
-          end if;
-        when data1 =>
-          if (tick_counter = tick) then
-            puffer (1)   <= rx;
-            tick_counter <= 0;
-            state        <= data2;
-          end if;
-        when data2 =>
-          if (tick_counter = tick) then
-            puffer (2)   <= rx;
-            tick_counter <= 0;
-            state        <= data3;
-          end if;
-        when data3 =>
-          if (tick_counter = tick) then
-            puffer(3)    <= rx;
-            tick_counter <= 0;
-            state        <= data4;
-          end if;
-        when data4 =>
-          if (tick_counter = tick) then
-            puffer (4)   <= rx;
-            tick_counter <= 0;
-            state        <= data5;
-          end if;
-        when data5 =>
-          if (tick_counter = tick) then
-            puffer (5)   <= rx;
-            tick_counter <= 0;
-            state        <= data6;
-          end if;
-        when data6 =>
-          if (tick_counter = tick) then
-            puffer (6)   <= rx;
-            tick_counter <= 0;
-            state        <= data7;
-          end if;
-        when data7 =>
-          if (tick_counter = tick) then
-            puffer (7)   <= rx;
-            tick_counter <= 0;
-            state        <= stop;
-          end if;
-        when stop =>
-          if (tick_counter = tick) then
-            fifo(to_integer(nextwrite)) <= puffer;
-            nextwrite                   <= nextwrite+1;
-            tick_counter <= 0;
-            state        <= idle;
-          end if;
-      end case;
-      if reset='1' then
-        state <=idle;
-        nextwrite <= (others => '0');
-      end if;
-    end if;
-
-  end process;
-end Behavioral;
-
diff --git a/doc/using/UART_srcs/rx/makefile b/doc/using/UART_srcs/rx/makefile
deleted file mode 100644
index 3546a42ad..000000000
--- a/doc/using/UART_srcs/rx/makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-
-all:
-	ghdl -i *.vhd
-	ghdl -m tb_UART_RX_8N1
-	ghdl -r tb_UART_RX_8N1 --stop-time=800us --wave=RX.ghw
-
-view:	
-	gtkwave RX.ghw
diff --git a/doc/using/UART_srcs/rx/sim_RX.png b/doc/using/UART_srcs/rx/sim_RX.png
deleted file mode 100644
index 5062d26a3..000000000
--- a/doc/using/UART_srcs/rx/sim_RX.png
+++ /dev/null
diff --git a/doc/using/UART_srcs/rx/tb_UART_RX_8N1.vhd b/doc/using/UART_srcs/rx/tb_UART_RX_8N1.vhd
deleted file mode 100644
index 4fd67c8e7..000000000
--- a/doc/using/UART_srcs/rx/tb_UART_RX_8N1.vhd
+++ /dev/null
@@ -1,121 +0,0 @@
--- tb_UART_RX_8N1.vhd
-----------------------------------------------------------------------
-library ieee;
-use ieee.std_logic_1164.all;
-use ieee.numeric_std.all;
-
-
-entity tb_UART_RX_8N1 is
-end tb_UART_RX_8N1;
-
-architecture behavior of tb_UART_RX_8N1 is
-
-  signal board_clk     : std_logic := '0';
-  signal reset         : std_logic := '0';
-  signal rx            : std_logic := '1';
-  signal rd            : std_logic := '0';
-  signal rd_en     : std_logic;
-  signal data          : std_logic_vector (7 downto 0);
- 
-  procedure tx_char (signal txpin : out std_logic; 
-              txdata : in character; baudrate : in integer) is
-    constant bittime : time := (integer(1000000000.0/real(baudrate))) * 1 ns; 
-    variable c       : std_logic_vector(7 downto 0);
-  begin
-    c     := std_logic_vector(to_unsigned(character'pos(txdata), 8));
-    txpin <= '0';                       -- Startbit
-    wait for bittime;
-    for i in 0 to 7 loop
-      txpin <= c(i);
-      wait for bittime;
-    end loop;
-    txpin <= '1';                       -- Stopbit
-    wait for bittime;
-  end tx_char;
-  --Outputs
-
-component UART_8N1_RX is
-
-  generic (clk_freq : integer;
-           baudrate : integer);
-  port(
-    clk           : in  std_logic;
-    reset         : in  std_logic;
-    --8bit interface
-    rdata         : out std_logic_vector(7 downto 0);
-    rd            : in  std_logic;
-    rd_en         : out std_logic;
-    --physical wire RX
-    rx            : in  std_logic
-    );
-end component;   
-  
-  constant board_clk_period : time := 10 ns;
-  constant board_clk_freq: integer :=100E6;   --100MHz
-  
-begin
-
-  -- Instantiate the Unit Under Test (UUT)
-UART_RX:UART_8N1_RX 
-
-  generic map (
-    clk_freq   => board_clk_freq,
-    baudrate   =>115200)
-  port map(
-    clk           => board_clk,
-    reset         => reset,
-    rdata         => data,
-    rd            => rd,
-    rd_en         => rd_en,
-    --physical wire RX
-    rx            => rx
-    );
-
-  process 
-  begin
-    wait for 80000 ns;
-      tx_char(RX, '$', 115200);
-      tx_char(RX, 'g', 115200); 
-      tx_char(RX, '#', 115200); 
-    wait for 50 us;
-      tx_char(RX, '6', 115200);                         
-      tx_char(RX, '7', 115200); 
-   wait;                       -- will wait forever
-   end process;
-          
-  -- Clock process definitions
-  board_clk_process : process
-  begin
-    board_clk <= '0';
-    wait for board_clk_period/2;
-      board_clk <= '1';
-    wait for board_clk_period/2;
-  end process;
-
-  -- Stimulus process
-  process
-     begin
-         reset <= '1';
-       wait for 100 ns;
-        reset <='0';   
-      wait;
-    end process;
-
-   -- Stimulus process
-   stim_proc : process
-   begin 
- 
-   loop
-      wait for 200 us;                     
-      wait until rising_edge(board_clk);
-      if rd_en='1' then 
-        rd<= '1';
-      end if;
-      wait until rising_edge(board_clk);
-       rd<= '0';        
-    end loop;
-
-      wait;
-    end process;
-
-   end;
diff --git a/doc/using/UART_srcs/tx/BlockTX.png b/doc/using/UART_srcs/tx/BlockTX.png
deleted file mode 100644
index 9031bb2f3..000000000
--- a/doc/using/UART_srcs/tx/BlockTX.png
+++ /dev/null
diff --git a/doc/using/UART_srcs/tx/TX.ghw b/doc/using/UART_srcs/tx/TX.ghw
deleted file mode 100644
index 1af3cfed0..000000000
--- a/doc/using/UART_srcs/tx/TX.ghw
+++ /dev/null
diff --git a/doc/using/UART_srcs/tx/TX.svg b/doc/using/UART_srcs/tx/TX.svg
deleted file mode 100644
index 35040d850..000000000
--- a/doc/using/UART_srcs/tx/TX.svg
+++ /dev/null
@@ -1,395 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="744.09448819"
-   height="1052.3622047"
-   id="svg2"
-   version="1.1"
-   inkscape:version="0.91 r13725"
-   sodipodi:docname="TX.svg"
-   inkscape:export-filename="/home/red/artikel_uart/tx/BlockTX.png"
-   inkscape:export-xdpi="90"
-   inkscape:export-ydpi="90">
-  <defs
-     id="defs4">
-    <marker
-       inkscape:stockid="Arrow2Lend"
-       orient="auto"
-       refY="0.0"
-       refX="0.0"
-       id="Arrow2Lend"
-       style="overflow:visible;">
-      <path
-         id="path3823"
-         style="fill-rule:evenodd;stroke-width:0.62500000;stroke-linejoin:round;"
-         d="M 8.7185878,4.0337352 L -2.2072895,0.016013256 L 8.7185884,-4.0017078 C 6.9730900,-1.6296469 6.9831476,1.6157441 8.7185878,4.0337352 z "
-         transform="scale(1.1) rotate(180) translate(1,0)" />
-    </marker>
-    <marker
-       inkscape:stockid="Arrow1Mend"
-       orient="auto"
-       refY="0.0"
-       refX="0.0"
-       id="Arrow1Mend"
-       style="overflow:visible;">
-      <path
-         id="path3811"
-         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
-         style="fill-rule:evenodd;stroke:#000000;stroke-width:1.0pt;"
-         transform="scale(0.4) rotate(180) translate(10,0)" />
-    </marker>
-  </defs>
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0.0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="0.98994949"
-     inkscape:cx="322.39263"
-     inkscape:cy="657.39598"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="false"
-     inkscape:window-width="1385"
-     inkscape:window-height="898"
-     inkscape:window-x="498"
-     inkscape:window-y="27"
-     inkscape:window-maximized="0" />
-  <metadata
-     id="metadata7">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title />
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     inkscape:label="Layer 1"
-     inkscape:groupmode="layer"
-     id="layer1">
-    <path
-       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
-       d="m 513.8103,332.36218 c 158.3947,0 158.3947,0 158.3947,0"
-       id="path4616"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:none;stroke:#000000;stroke-width:0.99999994px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 302.99003,332.36218 c 368.43852,0 368.43852,0 368.43852,0"
-       id="path3756"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:#ffffff;stroke:#000000;stroke-width:2;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dashoffset:0"
-       d="m 473.12814,282.66415 61.61891,27.14285 0.71428,104.56593 -62.33319,27.85714 z"
-       id="rect2985"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="ccccc" />
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="471.74121"
-       y="524.05237"
-       id="text3758"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan3760"
-         x="471.74121"
-         y="524.05237">Idle</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="526.28943"
-       y="528.09302"
-       id="text3762"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan3764"
-         x="526.28943"
-         y="528.09302">Start</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="557.60413"
-       y="558.39758"
-       id="text3766"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan3768"
-         x="557.60413"
-         y="558.39758">Data0</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="420.22345"
-       y="581.6311"
-       id="text3770"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan3772"
-         x="420.22345"
-         y="581.6311">Data7</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="423.25394"
-       y="548.29602"
-       id="text3774"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan3776"
-         x="423.25394"
-         y="548.29602">Stop</tspan></text>
-    <text
-       sodipodi:linespacing="125%"
-       id="text3778"
-       y="582.6413"
-       x="566.6955"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       xml:space="preserve"><tspan
-         y="582.6413"
-         x="566.6955"
-         id="tspan3780"
-         sodipodi:role="line">Data1</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="546.43152"
-       y="612.94586"
-       id="text3782"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan3784"
-         x="546.43152"
-         y="612.94586">Data2</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="472.75137"
-       y="562.43817"
-       id="text3786"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan3788"
-         x="472.75137"
-         y="562.43817"
-         style="font-size:20px">State</tspan><tspan
-         sodipodi:role="line"
-         x="472.75137"
-         y="587.43817"
-         id="tspan3790"
-         style="font-size:20px">Machine</tspan></text>
-    <rect
-       style="fill:none;stroke:#000000;stroke-width:2;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-opacity:1;stroke-dasharray:none;stroke-dashoffset:0"
-       id="rect3792"
-       width="235.36554"
-       height="146.47212"
-       x="400.02042"
-       y="493.88995"
-       ry="73.236061"
-       rx="73.236061" />
-    <path
-       style="fill:none;stroke:#000000;stroke-width:1;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend);stroke-miterlimit:4;stroke-dasharray:1,4;stroke-dashoffset:0"
-       d="m 537.40116,614.96613 c -72.73099,-1.01015 -86.87312,8.08122 -94.95435,-9.09137 -8.08122,-17.1726 -11.05566,-23.36658 -11.05566,-23.36658"
-       id="path3796"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="csc" />
-    <rect
-       style="fill:#ffffff;stroke:#000000;stroke-width:2;stroke-linecap:round;stroke-linejoin:miter;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       id="rect4428"
-       width="114.28571"
-       height="219.28572"
-       x="195.57143"
-       y="273.79074"
-       rx="0"
-       ry="0" />
-    <path
-       inkscape:connector-curvature="0"
-       id="path4430"
-       d="m 313.29502,332.36218 c 158.3947,0 158.3947,0 158.3947,0"
-       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)" />
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="617.70831"
-       y="324.54727"
-       id="text4618"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4620"
-         x="617.70831"
-         y="324.54727">TX</tspan></text>
-    <path
-       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 510.12704,424.0473 c 0,68.1853 0,68.1853 0,68.1853"
-       id="path4622"
-       inkscape:connector-curvature="0" />
-    <path
-       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 309.10668,478.09046 98.58101,56.91577"
-       id="path4624"
-       inkscape:connector-curvature="0" />
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="201.54575"
-       y="466.97879"
-       id="text4626"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4628"
-         x="201.54575"
-         y="466.97879">circular buffer</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="213.1422"
-       y="310.91022"
-       id="text4630"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4632"
-         x="213.1422"
-         y="310.91022">FIFO</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="482.34784"
-       y="334.6488"
-       id="text4634"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4636"
-         x="482.34784"
-         y="334.6488">MUX</tspan></text>
-    <path
-       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
-       d="m 448.65546,384.36218 c 23.03426,0 23.03426,0 23.03426,0"
-       id="path4638"
-       inkscape:connector-curvature="0" />
-    <path
-       inkscape:connector-curvature="0"
-       id="path4640"
-       d="m 448.65546,302.31647 c 23.03426,0 23.03426,0 23.03426,0"
-       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)" />
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="430.83005"
-       y="388.69196"
-       id="text4642"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4644"
-         x="430.83005"
-         y="388.69196">'1'</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="429.31482"
-       y="307.87976"
-       id="text4646"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4648"
-         x="429.31482"
-         y="307.87976">'0'</tspan></text>
-    <path
-       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
-       d="m 144.39149,302.31647 49.29823,0"
-       id="path4650"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="cc" />
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="147.48227"
-       y="294.74777"
-       id="text4652"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4654"
-         x="147.48227"
-         y="294.74777">WR</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-size:16px;font-style:normal;font-weight:normal;line-height:125%;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;font-family:Sans"
-       x="147.98735"
-       y="333.13358"
-       id="text4656"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4658"
-         x="147.98735"
-         y="333.13358">DATA</tspan></text>
-    <path
-       inkscape:connector-curvature="0"
-       id="path4660"
-       d="m 141.36104,344.31647 52.32868,0"
-       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)"
-       sodipodi:nodetypes="cc" />
-    <path
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 394.96964,322.02189 -7.07106,18.18274"
-       id="path4199"
-       inkscape:connector-curvature="0"
-       sodipodi:nodetypes="cc" />
-    <path
-       sodipodi:nodetypes="cc"
-       inkscape:connector-curvature="0"
-       id="path4201"
-       d="m 170.71577,335.15387 -7.07106,18.18274"
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:15px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="382.84781"
-       y="356.36707"
-       id="text4203"
-       sodipodi:linespacing="125%"><tspan
-         sodipodi:role="line"
-         id="tspan4205"
-         x="382.84781"
-         y="356.36707">8</tspan></text>
-    <text
-       sodipodi:linespacing="125%"
-       id="text4207"
-       y="366.4686"
-       x="158.59395"
-       style="font-style:normal;font-weight:normal;font-size:15px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       xml:space="preserve"><tspan
-         y="366.4686"
-         x="158.59395"
-         id="tspan4209"
-         sodipodi:role="line">8</tspan></text>
-    <text
-       sodipodi:linespacing="125%"
-       id="text4211"
-       y="410.73257"
-       x="139.36044"
-       style="font-style:normal;font-weight:normal;font-size:16px;line-height:125%;font-family:Sans;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none"
-       xml:space="preserve"><tspan
-         y="410.73257"
-         x="139.36044"
-         id="tspan4213"
-         sodipodi:role="line">WR_EN</tspan></text>
-    <path
-       sodipodi:nodetypes="cc"
-       inkscape:connector-curvature="0"
-       id="path4207"
-       d="m 195.01774,420.31647 -49.29823,0"
-       style="fill:none;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;marker-end:url(#Arrow2Lend)" />
-  </g>
-</svg>
diff --git a/doc/using/UART_srcs/tx/TX_simple.png b/doc/using/UART_srcs/tx/TX_simple.png
deleted file mode 100644
index cdf10e0c6..000000000
--- a/doc/using/UART_srcs/tx/TX_simple.png
+++ /dev/null
diff --git a/doc/using/UART_srcs/tx/UART_TX_8N1.vhd b/doc/using/UART_srcs/tx/UART_TX_8N1.vhd
deleted file mode 100644
index c8fd80b4a..000000000
--- a/doc/using/UART_srcs/tx/UART_TX_8N1.vhd
+++ /dev/null
@@ -1,162 +0,0 @@
--- UART_TX_8N1.vhd
-----------------------------------------------------------------------
-library IEEE;
-use IEEE.STD_LOGIC_1164.all;
-use ieee.numeric_std.all;
-
---UART transmiter without parity
-
-entity UART_8N1_TX is
-  generic(
-    clk_freq   : integer;
-    baudrate   : integer;
-    addr_depth : integer:=5); 
-  port(
-    clk        : in std_logic;
-    reset      : in std_logic;
-    --8bit  interface
-    wdata      : in  std_logic_vector(7 downto 0);
-    wr         : in  std_logic;
-    wr_en      : out std_logic;
-    
-    --physical wire
-    tx         : out std_logic);
-end;
-
-
-architecture Behavioral of UART_8N1_TX is
---FSM
-  type   state_type is (idle, start, data0, data1, data2, data3, data4,
-   data5, data6, data7, stop);
-   
-  signal state     : state_type := idle;
-  signal nextstate : state_type := idle;
-  
-  --FIFO
-  type   RAM is array (0 to (2**(addr_depth)-1)) of std_logic_vector (7 downto 0);
-  signal fifo      : RAM;
-  signal nextwrite : unsigned((addr_depth-1) downto 0);
-  signal nextread  : unsigned((addr_depth-1) downto 0);
-   
-  signal send_empty: std_logic;
-
-  --output
-  signal   data_tx      : std_logic_vector (7 downto 0);
-  constant tick         : integer := (clk_freq/baudrate);
-  signal   tick_counter : integer range 0 to (tick+1);
-
-begin
-
-  wr_en  <= '0' when (nextwrite+1 = nextread) else '1'; 
-  send_empty<='1' when nextwrite=nextread else '0';
-  
-  process(clk)
-  begin
-    if rising_edge(clk) then
-      if reset = '1' then
-        nextread <= (others => '0');
-      elsif state = stop and nextstate = idle then
-        nextread <= nextread+1;
-      end if;
-    end if;
-  end process;
-
-  process(clk)
-  begin
-    if rising_edge(clk) then
-      state <= nextstate;
-    end if;
-  end process;
-
-  process(clk)
-  begin
-    if rising_edge(clk) then
-      if reset = '1' then
-        nextwrite <= (others => '0');
-      elsif wr = '1' then
-        fifo(to_integer(nextwrite)) <= wdata;
-        nextwrite                   <= nextwrite+1;
-        
-      end if;
-    end if;
-  end process;
-
-
-  data_tx  <= fifo(to_integer(nextread));
-
-  process(clk)
-  begin
-    if rising_edge(clk) then
-      if state = idle then
-        if nextwrite /= nextread then
-          nextstate    <= start;
-          tick_counter <= 0;
-          tx           <= '0';
-        else
-          tx <= '1';
-        end if;
-      else
-        if tick_counter = tick then
-          tick_counter <= 0;
-        else
-          tick_counter <= tick_counter + 1;
-        end if;
-      end if;
-      if tick_counter = tick then
-        if state = start then
-          nextstate <= data0;
-          tx        <= data_tx(0);
-        end if;
-
-        if state = data0 then
-          nextstate <= data1;
-          tx        <= data_tx(1);
-        end if;
-
-        if state = data1 then
-          nextstate <= data2;
-          tx        <= data_tx(2);
-        end if;
-
-        if state = data2 then
-          nextstate <= data3;
-          tx        <= data_tx(3);
-        end if;
-        if state = data3 then
-          nextstate <= data4;
-          tx        <= data_tx(4);
-        end if;
-        if state = data4 then
-          nextstate <= data5;
-          tx        <= data_tx(5);
-        end if;
-        if state = data5 then
-          nextstate <= data6;
-          tx        <= data_tx(6);
-        end if;
-        if state = data6 then
-          nextstate <= data7;
-          tx        <= data_tx(7);
-        end if;
-        if state = data7 then
-          nextstate <= stop;
-          tx        <= '1';
-        end if;
-        if state = stop then
-          nextstate <= idle;
-          tx        <= '1';
-        end if;
-      end if;
-
-      if reset = '1' then
-        tick_counter <= 0;
-        tx           <= '1';
-        nextstate    <= idle;
-      end if;
-    end if;
-
-  end process;
-  
-
-end Behavioral;
-
diff --git a/doc/using/UART_srcs/tx/makefile b/doc/using/UART_srcs/tx/makefile
deleted file mode 100644
index 83168f2f1..000000000
--- a/doc/using/UART_srcs/tx/makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-
-all:
-	ghdl -i *.vhd
-	ghdl -m tb_UART_TX_8N1
-	ghdl -r tb_UART_TX_8N1 --stop-time=200us --wave=TX.ghw
-
-view:
-	gtkwave TX.ghw
diff --git a/doc/using/UART_srcs/tx/path6054.png b/doc/using/UART_srcs/tx/path6054.png
deleted file mode 100644
index d2c657243..000000000
--- a/doc/using/UART_srcs/tx/path6054.png
+++ /dev/null
diff --git a/doc/using/UART_srcs/tx/tb_UART_TX_8N1.vhd b/doc/using/UART_srcs/tx/tb_UART_TX_8N1.vhd
deleted file mode 100644
index a485a404a..000000000
--- a/doc/using/UART_srcs/tx/tb_UART_TX_8N1.vhd
+++ /dev/null
@@ -1,95 +0,0 @@
--- tb_UART_TX_8N1.vhd
-----------------------------------------------------------------------
-library ieee;
-use ieee.std_logic_1164.all;
-use ieee.numeric_std.all;
-
-entity tb_UART_TX_8N1 is
-end tb_UART_TX_8N1;
-
-architecture behavior of tb_UART_TX_8N1 is
-
-  --Inputs
-  signal board_clk : std_logic := '0';
-  signal reset     : std_logic := '0';
-  signal send_data : std_logic_vector (7 downto 0);
-  signal wr        : std_logic := '0';
-  signal tx        : std_logic;
-  
-  -- Component Declaration for the Unit Under Test (UUT)
-  component UART_8N1_TX is
-  generic(
-    clk_freq   : integer;
-    baudrate   : integer;
-    addr_depth : integer:=5); 
-  port(
-    clk        : in std_logic;
-    reset      : in std_logic;
-    --8bit  interface
-    wdata      : in  std_logic_vector(7 downto 0);
-    wr         : in  std_logic;
-    wr_en      : out std_logic;
-    
-    --physical wire
-    tx         : out std_logic);
-end component;  
-
-  constant board_clk_period : time := 10 ns;
-  constant board_clk_freq: integer :=100E6;   --100MHz
-  
-begin
-
-  -- Instantiate the Unit Under Test (UUT)
-UART_TX: UART_8N1_TX 
-  generic map(
-    clk_freq   => board_clk_freq,
-    baudrate   => 115200
-  --  addr_depth => use predefined
-  ) 
-  port map(
-    clk        => board_clk,
-    reset      => reset,
-
-    wdata      => send_data,
-    wr         => wr,
-    wr_en      => open,
-
-    tx         => tx
-    );
-
-    -- Clock process definitions
-    board_clk_process : process
-      begin
-          board_clk <= '0';
-        wait for board_clk_period/2;
-          board_clk <= '1';
-        wait for board_clk_period/2;
-      end process;
-
-
-   -- Stimulus process
-   stim_proc : process
-     begin
-       reset <= '1';
-
-      wait for 15 us;
-        reset <='0';   
-        send_data<=X"A0";
-      wait until rising_edge(board_clk);
-        wr<= '1';
-
-      wait until rising_edge(board_clk);
-        wr<= '0';
-        
-      wait for 5 us;
-
-      wait until rising_edge(board_clk);
-        wr<= '1';
-        send_data<=X"B1"; 
-                          
-      wait until rising_edge(board_clk);
-        wr<= '0';
-      wait;
-    end process;
-
-   end;
diff --git a/doc/using/UART_srcs/tx/tx.gtkw b/doc/using/UART_srcs/tx/tx.gtkw
deleted file mode 100644
index 92e8cd730..000000000
--- a/doc/using/UART_srcs/tx/tx.gtkw
+++ /dev/null
@@ -1,33 +0,0 @@
-[*]
-[*] GTKWave Analyzer v3.3.67 (w)1999-2015 BSI
-[*] Fri Dec 16 19:12:23 2016
-[*]
-[dumpfile] "/home/red/artikel_uart/tx/TX.ghw"
-[dumpfile_mtime] "Fri Dec 16 19:08:11 2016"
-[dumpfile_size] 349946
-[savefile] "/home/red/artikel_uart/tx/tx.gtkw"
-[timestart] 0
-[size] 1920 1016
-[pos] -83 -83
-*-35.000000 106965000000 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1 -1
-[treeopen] top.
-[treeopen] top.tb_uart_tx_8n1.
-[treeopen] top.tb_uart_tx_8n1.uart_tx.
-[sst_width] 218
-[signals_width] 142
-[sst_expanded] 1
-[sst_vpaned_height] 215
-@28
-top.tb_uart_tx_8n1.board_clk
-top.tb_uart_tx_8n1.reset
-[color] 5
-top.tb_uart_tx_8n1.wr
-@22
-#{top.tb_uart_tx_8n1.send_data[7:0]} top.tb_uart_tx_8n1.send_data[7] top.tb_uart_tx_8n1.send_data[6] top.tb_uart_tx_8n1.send_data[5] top.tb_uart_tx_8n1.send_data[4] top.tb_uart_tx_8n1.send_data[3] top.tb_uart_tx_8n1.send_data[2] top.tb_uart_tx_8n1.send_data[1] top.tb_uart_tx_8n1.send_data[0]
-@200
--FIFO_Control
-@22
-#{top.tb_uart_tx_8n1.uart_tx.nextread[4:0]} top.tb_uart_tx_8n1.uart_tx.nextread[4] top.tb_uart_tx_8n1.uart_tx.nextread[3] top.tb_uart_tx_8n1.uart_tx.nextread[2] top.tb_uart_tx_8n1.uart_tx.nextread[1] top.tb_uart_tx_8n1.uart_tx.nextread[0]
-#{top.tb_uart_tx_8n1.uart_tx.nextwrite[4:0]} top.tb_uart_tx_8n1.uart_tx.nextwrite[4] top.tb_uart_tx_8n1.uart_tx.nextwrite[3] top.tb_uart_tx_8n1.uart_tx.nextwrite[2] top.tb_uart_tx_8n1.uart_tx.nextwrite[1] top.tb_uart_tx_8n1.uart_tx.nextwrite[0]
-[pattern_trace] 1
-[pattern_trace] 0
diff --git a/doc/using/UART_srcs/uart.aux b/doc/using/UART_srcs/uart.aux
deleted file mode 100644
index d5ba29b80..000000000
--- a/doc/using/UART_srcs/uart.aux
+++ /dev/null
@@ -1,48 +0,0 @@
-\relax 
-\providecommand\hyper@newdestlabel[2]{}
-\providecommand\HyperFirstAtBeginDocument{\AtBeginDocument}
-\HyperFirstAtBeginDocument{\ifx\hyper@anchor\@undefined
-\global\let\oldcontentsline\contentsline
-\gdef\contentsline#1#2#3#4{\oldcontentsline{#1}{#2}{#3}}
-\global\let\oldnewlabel\newlabel
-\gdef\newlabel#1#2{\newlabelxx{#1}#2}
-\gdef\newlabelxx#1#2#3#4#5#6{\oldnewlabel{#1}{{#2}{#3}}}
-\AtEndDocument{\ifx\hyper@anchor\@undefined
-\let\contentsline\oldcontentsline
-\let\newlabel\oldnewlabel
-\fi}
-\fi}
-\global\let\hyper@last\relax 
-\gdef\HyperFirstAtBeginDocument#1{#1}
-\providecommand\HyField@AuxAddToFields[1]{}
-\providecommand\HyField@AuxAddToCoFields[2]{}
-\@writefile{toc}{\contentsline {section}{\numberline {1}introduction UART transmission}{2}{section.1}}
-\@writefile{lof}{\contentsline {figure}{\numberline {1}{\ignorespaces UART Timing}}{2}{figure.1}}
-\newlabel{fig:UART Timing}{{1}{2}{UART Timing}{figure.1}{}}
-\@writefile{toc}{\contentsline {section}{\numberline {2}advanced TX Unit with FIFO}{2}{section.2}}
-\@writefile{lof}{\contentsline {figure}{\numberline {2}{\ignorespaces Blockdiagram TX}}{3}{figure.2}}
-\newlabel{fig:Blockdiagram}{{2}{3}{Blockdiagram TX}{figure.2}{}}
-\@writefile{lol}{\contentsline {lstlisting}{tx/UART\textunderscore TX\textunderscore 8N1.vhd}{3}{lstlisting.-1}}
-\@writefile{lof}{\contentsline {figure}{\numberline {3}{\ignorespaces FIFO pointer}}{6}{figure.3}}
-\newlabel{fig:FIFO pointer}{{3}{6}{FIFO pointer}{figure.3}{}}
-\@writefile{lol}{\contentsline {lstlisting}{tx/tb\textunderscore UART\textunderscore TX\textunderscore 8N1.vhd}{6}{lstlisting.-2}}
-\@writefile{lof}{\contentsline {figure}{\numberline {4}{\ignorespaces UART TX output}}{8}{figure.4}}
-\@writefile{toc}{\contentsline {section}{\numberline {3}advanced RX Unit with FIFO}{8}{section.3}}
-\@writefile{lol}{\contentsline {lstlisting}{rx/UART\textunderscore RX\textunderscore 8N1.vhd}{9}{lstlisting.-3}}
-\@writefile{lol}{\contentsline {lstlisting}{rx/tb\textunderscore UART\textunderscore RX\textunderscore 8N1.vhd}{11}{lstlisting.-4}}
-\@writefile{lof}{\contentsline {figure}{\numberline {5}{\ignorespaces UART RX in}}{13}{figure.5}}
-\newlabel{fig:sim RX}{{5}{13}{UART RX in}{figure.5}{}}
-\@writefile{toc}{\contentsline {section}{\numberline {4}example application}{13}{section.4}}
-\@writefile{lol}{\contentsline {lstlisting}{capitalisation/capitalisation.vhd}{14}{lstlisting.-5}}
-\@writefile{lol}{\contentsline {lstlisting}{capitalisation/top\textunderscore capitalisation.vhd}{15}{lstlisting.-6}}
-\@writefile{lol}{\contentsline {lstlisting}{capitalisation/tb\textunderscore capitalisation.vhd}{17}{lstlisting.-7}}
-\@writefile{lof}{\contentsline {figure}{\numberline {6}{\ignorespaces capitalisation}}{18}{figure.6}}
-\newlabel{fig:capitalisation}{{6}{18}{capitalisation}{figure.6}{}}
-\@writefile{toc}{\contentsline {section}{\numberline {5}Makefile for workflow}{19}{section.5}}
-\@writefile{toc}{\contentsline {section}{\numberline {6}file in/out}{19}{section.6}}
-\@writefile{lol}{\contentsline {lstlisting}{file\textunderscore in\textunderscore out/tb\textunderscore file.vhd}{20}{lstlisting.-8}}
-\@writefile{toc}{\contentsline {section}{\numberline {7}VHPI Interface to an other language}{22}{section.7}}
-\@writefile{lol}{\contentsline {lstlisting}{vhpi/tty.c}{23}{lstlisting.-9}}
-\@writefile{lol}{\contentsline {lstlisting}{vhpi/tty\textunderscore pkg.vhd}{24}{lstlisting.-10}}
-\@writefile{lol}{\contentsline {lstlisting}{vhpi/tb\textunderscore tty.vhd}{25}{lstlisting.-11}}
-\@writefile{toc}{\contentsline {section}{\numberline {8}closing words}{28}{section.8}}
diff --git a/doc/using/UART_srcs/uart.fdb_latexmk b/doc/using/UART_srcs/uart.fdb_latexmk
deleted file mode 100644
index 616ea3e48..000000000
--- a/doc/using/UART_srcs/uart.fdb_latexmk
+++ /dev/null
@@ -1,87 +0,0 @@
-# Fdb version 3
-["pdflatex"] 1474141784 "uart.tex" "uart.pdf" "uart" 1474141785
-  "/etc/texmf/web2c/texmf.cnf" 1372417701 32852 7187d1444a1804d82f3844a397e6bfda ""
-  "/usr/share/texmf/fonts/enc/dvips/lm/lm-ec.enc" 1254269338 2375 baa924870cfb487815765f9094cf3728 ""
-  "/usr/share/texmf/fonts/map/fontname/texfonts.map" 1272929888 3287 e6b82fe08f5336d4d5ebc73fb1152e87 ""
-  "/usr/share/texmf/fonts/map/pdftex/updmap/pdftex.map" 1369705486 1072720 61c8b26b04736286421720ab54bbc1b4 ""
-  "/usr/share/texmf/fonts/tfm/jknappen/ec/ecrm1095.tfm" 1136768653 3584 929cdff2b7a8c11bd4d49fd68cb0ae70 ""
-  "/usr/share/texmf/fonts/tfm/public/cm/cmr10.tfm" 1136768653 1296 45809c5a464d5f32c8f98ba97c1bb47f ""
-  "/usr/share/texmf/fonts/tfm/public/lm/ec-lmbx10.tfm" 1254269338 12076 b54175e02101bea1addf6b2d0197ed12 ""
-  "/usr/share/texmf/fonts/tfm/public/lm/ec-lmbx12.tfm" 1254269338 12088 d750ac78274fa7c9f73ba09914c04f8a ""
-  "/usr/share/texmf/fonts/tfm/public/lm/ec-lmr10.tfm" 1254269338 12056 7e13df7fe4cbce21b072ba7c4f4deb6e ""
-  "/usr/share/texmf/fonts/tfm/public/lm/ec-lmr12.tfm" 1254269338 12092 7b1546e2d096cfd5dcbd4049b0b1ec2e ""
-  "/usr/share/texmf/fonts/tfm/public/lm/ec-lmr17.tfm" 1254269338 12156 ca1ae6a3c8564e89597f1f993fba1608 ""
-  "/usr/share/texmf/fonts/tfm/public/lm/ec-lmr8.tfm" 1254269338 12064 a35db870f0b76c338d749c56dc030ef5 ""
-  "/usr/share/texmf/fonts/tfm/public/lm/ec-lmtk10.tfm" 1254269338 1368 5bfeb1cf8f9f0acdb7436bfaa8e0da4e ""
-  "/usr/share/texmf/fonts/tfm/public/lm/ec-lmtt10.tfm" 1254269338 1372 2ef2c2b492b3c4cd7879fe083abbb061 ""
-  "/usr/share/texmf/fonts/tfm/public/lm/ec-lmtt8.tfm" 1254269338 1380 64228d979098ac090aa3f98d5aa8ad3e ""
-  "/usr/share/texmf/fonts/tfm/public/lm/lmex10.tfm" 1148093231 992 ce925c9346c7613270a79afbee98c070 ""
-  "/usr/share/texmf/fonts/tfm/public/lm/lmmi12.tfm" 1148093231 1524 753b192b18f2991794f9d41a8228510b ""
-  "/usr/share/texmf/fonts/tfm/public/lm/lmmi6.tfm" 1148093231 1512 94a3fd88c6f27dbd9ecb46987e297a4e ""
-  "/usr/share/texmf/fonts/tfm/public/lm/lmmi8.tfm" 1148093231 1520 a3fe5596932db2db2cbda300920dd4e9 ""
-  "/usr/share/texmf/fonts/tfm/public/lm/lmsy10.tfm" 1148093231 1308 02cc510f9dd6012e5815d0c0ffbf6869 ""
-  "/usr/share/texmf/fonts/tfm/public/lm/lmsy6.tfm" 1148093231 1300 b0605d44c16c22d99dc001808e4f24ea ""
-  "/usr/share/texmf/fonts/tfm/public/lm/lmsy8.tfm" 1148093231 1304 cdc9a17df9ef0d2dc320eff37bbab1c4 ""
-  "/usr/share/texmf/fonts/tfm/public/lm/rm-lmr12.tfm" 1254269338 11888 6841b91e46b65cf41a49b160e6e74130 ""
-  "/usr/share/texmf/fonts/tfm/public/lm/rm-lmr6.tfm" 1254269338 11836 e3b6ce3e601aec94f64a536e7f4224d5 ""
-  "/usr/share/texmf/fonts/tfm/public/lm/rm-lmr8.tfm" 1254269338 11864 309fd7f43e4a0ba39f6f7644d76e8edf ""
-  "/usr/share/texmf/fonts/type1/public/lm/lmbx10.pfb" 1255129361 121021 1bf809ce4a594679006bd72263eba59b ""
-  "/usr/share/texmf/fonts/type1/public/lm/lmbx12.pfb" 1255129361 116908 1fca96723793882c2e0160350c192fc8 ""
-  "/usr/share/texmf/fonts/type1/public/lm/lmr10.pfb" 1255129361 119235 f35b44530a1d90eb90fe15d9cba67ea0 ""
-  "/usr/share/texmf/fonts/type1/public/lm/lmr12.pfb" 1255129361 113634 f99c44d58bae0863375faf0e1d74d612 ""
-  "/usr/share/texmf/fonts/type1/public/lm/lmr17.pfb" 1255129361 119752 1bd8d06e4079df624bf59ce3ad7c9aa6 ""
-  "/usr/share/texmf/fonts/type1/public/lm/lmtk10.pfb" 1255129361 117319 7f8361f845845ce6d5b36cbd9f9cf377 ""
-  "/usr/share/texmf/fonts/type1/public/lm/lmtt8.pfb" 1255129361 115291 2ae7034c644e971beb573b1e6606f863 ""
-  "/usr/share/texmf/tex/context/base/supp-pdf.mkii" 1337017135 71627 94eb9990bed73c364d7f53f960cc8c5b ""
-  "/usr/share/texmf/tex/generic/oberdiek/etexcmds.sty" 1335995445 7612 c47308d923ec19888707b0f1792b326a ""
-  "/usr/share/texmf/tex/generic/oberdiek/ifluatex.sty" 1303254447 7324 11d14f318d865f420e692d4e6c9c18c3 ""
-  "/usr/share/texmf/tex/generic/oberdiek/ifpdf.sty" 1303254447 7140 ece2cc23d9f20e1f53975ac167f42d3e ""
-  "/usr/share/texmf/tex/generic/oberdiek/infwarerr.sty" 1335995445 8253 3bdedc8409aa5d290a2339be6f09af03 ""
-  "/usr/share/texmf/tex/generic/oberdiek/kvdefinekeys.sty" 1335995445 5152 387d9200f396b498d5fd679ae44ed898 ""
-  "/usr/share/texmf/tex/generic/oberdiek/kvsetkeys.sty" 1335995445 14040 8de9f47fabc4ca3bd69b6d795e32751c ""
-  "/usr/share/texmf/tex/generic/oberdiek/ltxcmds.sty" 1335995445 18425 775b341047ce304520cc7c11ca41392e ""
-  "/usr/share/texmf/tex/generic/oberdiek/pdftexcmds.sty" 1335995445 19987 01cb2f3c1d21e5f05711b7fd50b17f2a ""
-  "/usr/share/texmf/tex/latex/base/article.cls" 1254151887 20571 b8bd218bf2e18b4f5817ee643cd9c515 ""
-  "/usr/share/texmf/tex/latex/base/fontenc.sty" 1254151887 4435 b97063eb2f20be499e7725926af85c55 ""
-  "/usr/share/texmf/tex/latex/base/inputenc.sty" 1254151887 4388 1cb2ca8d423695bd22ea8d126c276f33 ""
-  "/usr/share/texmf/tex/latex/base/omsenc.dfu" 1254151887 1868 39c80c053f689193a1ca9a83d05b2744 ""
-  "/usr/share/texmf/tex/latex/base/ot1enc.dfu" 1254151887 2620 9a36ef7e0369aa29d9d298a6bf19588e ""
-  "/usr/share/texmf/tex/latex/base/size11.clo" 1254151887 9058 640f9c40a6d912e30839a669c8a999ec ""
-  "/usr/share/texmf/tex/latex/base/t1enc.def" 1254151887 9172 67c33288b50eb57eab968f345e8befb0 ""
-  "/usr/share/texmf/tex/latex/base/t1enc.dfu" 1254151887 7480 2a6bcf9edfeb9ff088a3f0cf7f1a196c ""
-  "/usr/share/texmf/tex/latex/base/utf8.def" 1254151887 6350 d390538f995713c986118b8607d58f49 ""
-  "/usr/share/texmf/tex/latex/graphics/graphics.sty" 1254151804 14183 42a8fc761b806986eef292369afc2988 ""
-  "/usr/share/texmf/tex/latex/graphics/graphicx.sty" 1156702488 7882 3bd78469d444e8d494e27cfd7ca92719 ""
-  "/usr/share/texmf/tex/latex/graphics/keyval.sty" 1156702488 2266 7054435e4584a41cf53b0a7ca624d0cb ""
-  "/usr/share/texmf/tex/latex/graphics/trig.sty" 1156702488 3153 c50e6bd54d2dd3933fc52bcf369bec4a ""
-  "/usr/share/texmf/tex/latex/latexconfig/color.cfg" 1254097189 802 7b8c8d72c24d795ed7720e4dfd29bff3 ""
-  "/usr/share/texmf/tex/latex/latexconfig/epstopdf-sys.cfg" 1279039959 678 4792914a8f45be57bb98413425e4c7af ""
-  "/usr/share/texmf/tex/latex/latexconfig/graphics.cfg" 1278958963 3563 d35e897cae3b8c6848f6677b73370b54 ""
-  "/usr/share/texmf/tex/latex/listings/listings.cfg" 1213130811 1745 ae6fbed3255376b850f8b4ef89faef50 ""
-  "/usr/share/texmf/tex/latex/listings/listings.sty" 1213130811 80175 a550732aef92a278ec9bed572025bd8e ""
-  "/usr/share/texmf/tex/latex/listings/lstmisc.sty" 1213130811 76974 d9d4762e984ff3346653b91fbcf676e9 ""
-  "/usr/share/texmf/tex/latex/lm/lmodern.sty" 1257296302 1606 c17281c7cff2bbd7ff0173e1433487ec ""
-  "/usr/share/texmf/tex/latex/lm/omllmm.fd" 1257296302 888 44447a3a3af84a22454ef89500942d93 ""
-  "/usr/share/texmf/tex/latex/lm/omslmsy.fd" 1257296302 805 af340a8260c447aa315cfc740ff0152f ""
-  "/usr/share/texmf/tex/latex/lm/omxlmex.fd" 1257296302 566 a94661f7b66063f191960bb7935b6ba2 ""
-  "/usr/share/texmf/tex/latex/lm/ot1lmr.fd" 1257296302 1880 bae7b659316f7344a86218ad38b01d91 ""
-  "/usr/share/texmf/tex/latex/lm/t1lmr.fd" 1257296302 1865 afbfccbe7fda9c2dc5078ad7c486bbed ""
-  "/usr/share/texmf/tex/latex/lm/t1lmtt.fd" 1257296302 2681 354015af3b61e7be30009f084986375a ""
-  "/usr/share/texmf/tex/latex/oberdiek/epstopdf-base.sty" 1303254447 12029 04d7fdf76e0464c23b5aa3a727952d7c ""
-  "/usr/share/texmf/tex/latex/oberdiek/grfext.sty" 1335995445 7075 bd0c34fbf1ae8fd1debd2a554e41b2d5 ""
-  "/usr/share/texmf/tex/latex/oberdiek/kvoptions.sty" 1335995445 22417 c74ff4af6a1aa2b65d1924020edbbe11 ""
-  "/usr/share/texmf/tex/latex/pdftex-def/pdftex.def" 1306616590 55368 3c8a0d99822330f2dfabc0dfb09ce897 ""
-  "/usr/share/texmf/tex/latex/tools/verbatim.sty" 1312409015 7125 6b8323deb5c5c3a19b248762654143eb ""
-  "/usr/share/texmf/tex/latex/xcolor/xcolor.sty" 1169481954 55224 a43bab84e0ac5e6efcaf9a98bde73a94 ""
-  "/var/lib/texmf/web2c/pdftex/pdflatex.fmt" 1452093766 3819039 8e122683099cf58faae1b18e128467d4 ""
-  "UART_timing.png" 1474092153 14715 daee26772d3138b22087df53c27f62c5 ""
-  "tx/UART_TX_8N1.vhd" 1474137368 3654 7e81c46ba839241d05b546576e0c681f ""
-  "uart.aux" 1474141784 409 316a848a2221348e09ae8d8398ef2e79 ""
-  "uart.tex" 1474141784 1869 d709653d1ca825b52a2edb79fe814276 ""
-  "uart.toc" 1474141784 144 d55937a911f0fd8108b8e171eb6c5961 ""
-  (generated)
-  "uart.log"
-  "tx/UART_TX_8N1.vhd.aux"
-  "uart.pdf"
-  "uart.toc"
-  "uart.aux"
diff --git a/doc/using/UART_srcs/uart.fls b/doc/using/UART_srcs/uart.fls
deleted file mode 100644
index 3f021cce4..000000000
--- a/doc/using/UART_srcs/uart.fls
+++ /dev/null
@@ -1,139 +0,0 @@
-PWD /home/red/artikel_uart
-INPUT /etc/texmf/web2c/texmf.cnf
-INPUT /var/lib/texmf/web2c/pdftex/pdflatex.fmt
-INPUT uart.tex
-OUTPUT uart.log
-INPUT /usr/share/texmf/tex/latex/base/article.cls
-INPUT /usr/share/texmf/tex/latex/base/article.cls
-INPUT /usr/share/texmf/tex/latex/base/size11.clo
-INPUT /usr/share/texmf/tex/latex/base/size11.clo
-INPUT /usr/share/texmf/fonts/map/fontname/texfonts.map
-INPUT /usr/share/texmf/fonts/tfm/public/cm/cmr10.tfm
-INPUT /usr/share/texmf/tex/latex/base/fontenc.sty
-INPUT /usr/share/texmf/tex/latex/base/fontenc.sty
-INPUT /usr/share/texmf/tex/latex/base/t1enc.def
-INPUT /usr/share/texmf/tex/latex/base/t1enc.def
-INPUT /usr/share/texmf/fonts/tfm/jknappen/ec/ecrm1095.tfm
-INPUT /usr/share/texmf/tex/latex/base/inputenc.sty
-INPUT /usr/share/texmf/tex/latex/base/inputenc.sty
-INPUT /usr/share/texmf/tex/latex/base/utf8.def
-INPUT /usr/share/texmf/tex/latex/base/utf8.def
-INPUT /usr/share/texmf/tex/latex/base/t1enc.dfu
-INPUT /usr/share/texmf/tex/latex/base/t1enc.dfu
-INPUT /usr/share/texmf/tex/latex/base/ot1enc.dfu
-INPUT /usr/share/texmf/tex/latex/base/ot1enc.dfu
-INPUT /usr/share/texmf/tex/latex/base/omsenc.dfu
-INPUT /usr/share/texmf/tex/latex/base/omsenc.dfu
-INPUT /usr/share/texmf/tex/latex/lm/lmodern.sty
-INPUT /usr/share/texmf/tex/latex/lm/lmodern.sty
-INPUT /usr/share/texmf/tex/latex/graphics/graphicx.sty
-INPUT /usr/share/texmf/tex/latex/graphics/graphicx.sty
-INPUT /usr/share/texmf/tex/latex/graphics/keyval.sty
-INPUT /usr/share/texmf/tex/latex/graphics/keyval.sty
-INPUT /usr/share/texmf/tex/latex/graphics/graphics.sty
-INPUT /usr/share/texmf/tex/latex/graphics/graphics.sty
-INPUT /usr/share/texmf/tex/latex/graphics/trig.sty
-INPUT /usr/share/texmf/tex/latex/graphics/trig.sty
-INPUT /usr/share/texmf/tex/latex/latexconfig/graphics.cfg
-INPUT /usr/share/texmf/tex/latex/latexconfig/graphics.cfg
-INPUT /usr/share/texmf/tex/latex/pdftex-def/pdftex.def
-INPUT /usr/share/texmf/tex/latex/pdftex-def/pdftex.def
-INPUT /usr/share/texmf/tex/generic/oberdiek/infwarerr.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/infwarerr.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/ltxcmds.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/ltxcmds.sty
-INPUT /usr/share/texmf/tex/latex/tools/verbatim.sty
-INPUT /usr/share/texmf/tex/latex/tools/verbatim.sty
-INPUT /usr/share/texmf/tex/latex/base/fontenc.sty
-INPUT /usr/share/texmf/tex/latex/base/fontenc.sty
-INPUT /usr/share/texmf/tex/latex/base/t1enc.def
-INPUT /usr/share/texmf/tex/latex/base/t1enc.def
-INPUT /usr/share/texmf/tex/latex/listings/listings.sty
-INPUT /usr/share/texmf/tex/latex/listings/listings.sty
-INPUT /usr/share/texmf/tex/latex/listings/lstmisc.sty
-INPUT /usr/share/texmf/tex/latex/listings/lstmisc.sty
-INPUT /usr/share/texmf/tex/latex/listings/listings.cfg
-INPUT /usr/share/texmf/tex/latex/listings/listings.cfg
-INPUT /usr/share/texmf/tex/latex/xcolor/xcolor.sty
-INPUT /usr/share/texmf/tex/latex/xcolor/xcolor.sty
-INPUT /usr/share/texmf/tex/latex/latexconfig/color.cfg
-INPUT /usr/share/texmf/tex/latex/latexconfig/color.cfg
-INPUT uart.aux
-INPUT uart.aux
-OUTPUT uart.aux
-INPUT /usr/share/texmf/tex/latex/lm/t1lmr.fd
-INPUT /usr/share/texmf/tex/latex/lm/t1lmr.fd
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmr10.tfm
-INPUT /usr/share/texmf/tex/context/base/supp-pdf.mkii
-INPUT /usr/share/texmf/tex/context/base/supp-pdf.mkii
-INPUT /usr/share/texmf/tex/generic/oberdiek/pdftexcmds.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/pdftexcmds.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/ifluatex.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/ifluatex.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/ifpdf.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/ifpdf.sty
-INPUT /usr/share/texmf/tex/latex/oberdiek/epstopdf-base.sty
-INPUT /usr/share/texmf/tex/latex/oberdiek/epstopdf-base.sty
-INPUT /usr/share/texmf/tex/latex/oberdiek/grfext.sty
-INPUT /usr/share/texmf/tex/latex/oberdiek/grfext.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/kvdefinekeys.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/kvdefinekeys.sty
-INPUT /usr/share/texmf/tex/latex/oberdiek/kvoptions.sty
-INPUT /usr/share/texmf/tex/latex/oberdiek/kvoptions.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/kvsetkeys.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/kvsetkeys.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/etexcmds.sty
-INPUT /usr/share/texmf/tex/generic/oberdiek/etexcmds.sty
-INPUT /usr/share/texmf/tex/latex/latexconfig/epstopdf-sys.cfg
-INPUT /usr/share/texmf/tex/latex/latexconfig/epstopdf-sys.cfg
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmr17.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmr12.tfm
-INPUT /usr/share/texmf/tex/latex/lm/ot1lmr.fd
-INPUT /usr/share/texmf/tex/latex/lm/ot1lmr.fd
-INPUT /usr/share/texmf/fonts/tfm/public/lm/rm-lmr12.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/rm-lmr8.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/rm-lmr6.tfm
-INPUT /usr/share/texmf/tex/latex/lm/omllmm.fd
-INPUT /usr/share/texmf/tex/latex/lm/omllmm.fd
-INPUT /usr/share/texmf/fonts/tfm/public/lm/lmmi12.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/lmmi8.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/lmmi6.tfm
-INPUT /usr/share/texmf/tex/latex/lm/omslmsy.fd
-INPUT /usr/share/texmf/tex/latex/lm/omslmsy.fd
-INPUT /usr/share/texmf/fonts/tfm/public/lm/lmsy10.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/lmsy8.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/lmsy6.tfm
-INPUT /usr/share/texmf/tex/latex/lm/omxlmex.fd
-INPUT /usr/share/texmf/tex/latex/lm/omxlmex.fd
-INPUT /usr/share/texmf/fonts/tfm/public/lm/lmex10.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmr12.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmbx12.tfm
-INPUT uart.toc
-INPUT uart.toc
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmbx10.tfm
-OUTPUT uart.toc
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmr10.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmbx10.tfm
-INPUT UART_timing.png
-INPUT ./UART_timing.png
-OUTPUT uart.pdf
-INPUT ./UART_timing.png
-INPUT tx/UART_TX_8N1.vhd
-INPUT /usr/share/texmf/tex/latex/lm/t1lmtt.fd
-INPUT /usr/share/texmf/tex/latex/lm/t1lmtt.fd
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmtt10.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmtt8.tfm
-INPUT tx/UART_TX_8N1.vhd
-INPUT tx/UART_TX_8N1.vhd
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmtk10.tfm
-INPUT /usr/share/texmf/fonts/tfm/public/lm/ec-lmr8.tfm
-INPUT /usr/share/texmf/fonts/map/pdftex/updmap/pdftex.map
-INPUT uart.aux
-INPUT /usr/share/texmf/fonts/enc/dvips/lm/lm-ec.enc
-INPUT /usr/share/texmf/fonts/type1/public/lm/lmbx10.pfb
-INPUT /usr/share/texmf/fonts/type1/public/lm/lmbx12.pfb
-INPUT /usr/share/texmf/fonts/type1/public/lm/lmr10.pfb
-INPUT /usr/share/texmf/fonts/type1/public/lm/lmr12.pfb
-INPUT /usr/share/texmf/fonts/type1/public/lm/lmr17.pfb
-INPUT /usr/share/texmf/fonts/type1/public/lm/lmtk10.pfb
-INPUT /usr/share/texmf/fonts/type1/public/lm/lmtt8.pfb
diff --git a/doc/using/UART_srcs/uart.out b/doc/using/UART_srcs/uart.out
deleted file mode 100644
index 79ed1c00f..000000000
--- a/doc/using/UART_srcs/uart.out
+++ /dev/null
@@ -1,8 +0,0 @@
-\BOOKMARK [1][-]{section.1}{introduction UART transmission}{}% 1
-\BOOKMARK [1][-]{section.2}{advanced TX Unit with FIFO}{}% 2
-\BOOKMARK [1][-]{section.3}{advanced RX Unit with FIFO}{}% 3
-\BOOKMARK [1][-]{section.4}{example application}{}% 4
-\BOOKMARK [1][-]{section.5}{Makefile for workflow}{}% 5
-\BOOKMARK [1][-]{section.6}{file in/out}{}% 6
-\BOOKMARK [1][-]{section.7}{VHPI Interface to an other language}{}% 7
-\BOOKMARK [1][-]{section.8}{closing words}{}% 8
diff --git a/doc/using/UART_srcs/uart.tex b/doc/using/UART_srcs/uart.tex
deleted file mode 100644
index 1c1f21e20..000000000
--- a/doc/using/UART_srcs/uart.tex
+++ /dev/null
@@ -1,269 +0,0 @@
-\documentclass[a4paper,11pt]{article}
-\usepackage[T1]{fontenc}
-\usepackage[utf8]{inputenc}
-\usepackage{lmodern}
-%\usepackage{ngerman}
-\usepackage{graphicx}
-\usepackage{float}
-\usepackage{attachfile}
-\usepackage[T1]{fontenc}
-%\usepackage{beramono}% monospaced font with bold variant
-
-\usepackage{listings}
-\lstdefinelanguage{VHDL}{
-  morekeywords={
-    library,use,all,entity,is,port,in,out,end,architecture,of,
-    begin,and,generic,process,if,then,elsif,else,when,
-    signal, integer,std_logic,unsigned,signed,std_logic_vector,
-    constant, variable, wait, for, until, map
-  },
-  morecomment=[l]--
-}
-
-\usepackage{xcolor}
-\colorlet{keyword}{blue!100!black!80}
-\colorlet{comment}{green!90!black!90}
-\lstdefinestyle{vhdl}{
-  language     = VHDL,
-  basicstyle   = \ttfamily\scriptsize,
-  keywordstyle = \color{keyword}\bfseries,
-  commentstyle = \color{comment}
-}
-
-\lstdefinestyle{c}{
-  language     = c,
-  basicstyle   = \ttfamily\scriptsize,
-  keywordstyle = \color{keyword}\bfseries,
-  commentstyle = \color{comment}
-}
-
-\usepackage{hyperref}  %remove the red boxes at contents
-\hypersetup{colorlinks=true,linkcolor=black}
-
-\usepackage{fancyvrb}
-
-\setlength{\parindent}{0em} 
-
-
-\title{How to simulate an UART VHDL code with ghdl}
-\author{René Doß \\ info@dossmatik.de}
-
-\begin{document}
-
-\maketitle
-\tableofcontents
-
-\begin{abstract}
-This article was written to demonstrate on a practical example how ghdl works. The reader should have basic knowledge about VHDL. This example is fitable code into a FPGA. The code is written vendor independent. UART as example is generally understandable and also parctical on many applications.
-An asynchronous serial transmission has two parts Receiver and Transmitter. The handling is typical integrated on all microcontrollers today. Different sensors can communicate over UART. This makes this data transmission very interesting for a hardware developer. The Receiver and Transmitter code is included with an integrated FIFO. These all are demonstrated with ghdl simulation. You will get new spirit for VHDL code validation. The VHDL files are attached in this document.
-\end{abstract}
-
-\newpage
-\section{introduction UART transmission}
-The signal is at silence condition high. A low on line manifests a start of transmission, followed by a number of data bits. The data bits are send from least significant bit (LSB) to most significant bit (MSB). Next bit is a high, witch is called stop bit and it is needed to mark the end of transmission. In this state a new start bit can be correct capture by the receiver. Note that no clock signal has sent through the serial line. The transmitter resynchronize on the falling edge in start bit condition. The data speed and the data length of sender an receiver have to be the same.
-\begin{figure}[H]
-  \begin{center}
-    \includegraphics[scale=0.5]{UART_timing.png}
-    \caption{UART Timing}
-    \label{fig:UART Timing}
-  \end{center}
-\end{figure}
-
-The baudrate specifies the transmission speed. The unit is baud bit per second.  Common baudrates are established. 
-Internally the hardware of UART runs in higher clock rate.
-
-\section{advanced TX Unit with FIFO}
-The UART interface is slow and needs a buffer for better synchronisation. Data is written in a FIFO. FIFO is the abrivation first in first out. This FIFO is realised in a ring buffer. Figure \ref{fig:FIFO pointer} explains how it works. Two pointers point at an address of internal RAM. The pointer nextwrite points to the address where the next incoming data will be written. When new data is incoming the FIFO the pointer is increased. Now valid data has to be read from the FIFO  and the nextread is increased. If the two pointers in the FIFO are equal the FIFO is empty.
-
-\begin{figure}[H]
-  \begin{center}
-    \includegraphics[scale=0.5]{tx/BlockTX.png}
-    \caption{Blockdiagram TX}
-    \label{fig:Blockdiagram}
-  \end{center}
-\end{figure}
-\hrule
-\lstinputlisting[style=vhdl]{tx/UART_TX_8N1.vhd}
-\hrule
-\vspace{10pt}
-\begin{figure}[H]
-  \begin{center}
-    \includegraphics[scale=0.4]{tx/path6054.png}
-    \caption{FIFO pointer}
-    \label{fig:FIFO pointer}
-  \end{center}
-\end{figure}
- The FIFO is a circular buffer and works with two address pointers. One pointer is used to point at the write address. The other pointer points at the read address. Both pointers are increased with one step. The interface has two control signals for handshakes. send\_busy and send\_empty these are the FIFO states full and empty. The distance between nextwrite and nextread generates the signal busy because even one more wirte action would cause an overflow in the buffer.
- The testbench is required.
-\\
-\hrule
-\lstinputlisting[style=vhdl]{tx/tb_UART_TX_8N1.vhd}
-\hrule
-\vspace{10pt}
-Put both files in the same directory and simulate this testcase and check the timing requirements.
-
-\begin{verbatim}
-ghdl -i *.vhd
-ghdl -m tb_UART_TX_8N1
-ghdl -r tb_UART_TX_8N1 --stop-time=200us --wave=TX.ghw
-gtkwave TX.ghw
-\end{verbatim}
-
-\begin{figure}[H]
-  \begin{center}
-    \includegraphics[scale=0.3]{tx/TX_simple.png}
-    \caption{UART TX output}
-  \end{center}
-\end{figure}
-
-\section{advanced RX Unit with FIFO}
-The receiver is the opposite component of the transmitter. The code is mapped also in this article. The generic is used to set the right timing. The tick\_counter is the timer of one bit. The counter range of tick is calculated by the generic clk\_freq and baudrate. These parameters make the code portable into different designs. There is nothing to change inside the code when another frequency or baudrate are used. Such parameter makes source code simpiler reusable. When the transmission is off, the RX has a high on line. The state maschine is in idle and waits for RX to turn low. This condition is checked of the falling edge on the start bit. All other bits are cought in the middle of the bit time. 
-\\
-\hrule
-\lstinputlisting[style=vhdl]{rx/UART_RX_8N1.vhd}
-\hrule
-\vspace{10pt}
-Now the apposite testbench.
-\hrule
-\lstinputlisting[style=vhdl]{rx/tb_UART_RX_8N1.vhd}
-\hrule
-\vspace{10pt}
-
-\begin{verbatim}
-ghdl -i *.vhd
-ghdl -m tb_UART_RX_8N1
-ghdl -r tb_UART_RX_8N1 --stop-time=800us --wave=RX.ghw
-gtkwave RX.ghw
-\end{verbatim}
-
-\begin{figure}[H]
-  \begin{center}
-    \includegraphics[scale=0.3]{rx/sim_RX.png}
-    \caption{UART RX in}
-    \label{fig:sim RX}
-  \end{center}
-\end{figure}
-
-\section{example application}
-In the last sections we have designed an input and an output interface. By combinating the receiving and transmitting example, we can build the full UART. Now let us make a simple capitalisation ASCII engine. This is more a theoretical example for a demonstration. The data stream is very simple. It demonstrates how it works.
-\\
-\hrule
-\lstinputlisting[style=vhdl]{capitalisation/capitalisation.vhd}
-\hrule
-\vspace{10pt}
-
-The application has an 8bit input and a 8bit output interface. A top instance combine the application and the RX und TX interface together. RX and TX are the physical wires and board\_clk is the internal clock of all. This design is competent to fit inside an FPGA. 
-\begin{figure}[H]
-  \begin{center}
-    \includegraphics[scale=0.4]{capitalisation/zeichnung.png}
-  \end{center}
-\end{figure}
-
-\hrule
-\lstinputlisting[style=vhdl]{capitalisation/top_capitalisation.vhd}
-\hrule
-\vspace{10pt}
-Also for this the testbench.
-\\
-\hrule
-\lstinputlisting[style=vhdl]{capitalisation/tb_capitalisation.vhd}
-\hrule
-\vspace{10pt}
-
-\begin{figure}[H]
-  \begin{center}
-    \includegraphics[scale=0.4]{capitalisation/capitalisation.png}
-    \caption{capitalisation}
-    \label{fig:capitalisation}
-  \end{center}
-\end{figure}
-
-\section{Makefile for workflow}
-Make is a build tool from the GNU Project. Mostly it is used to control compiling a huge number of files ans solve dependencies. For simplify your life and enhance your productivity you can use is also the make tool to prepair the target in the ghdl simulation. The makefile is like a script with sequential commands. Sometimes rules are insert. If you have larger designs, you should also divide the VHDL design into different files. I use \textbf{make} for this. Store the makefile into the same folder. For run in GHDL type make, this starts all commandos under all. And for view inside the timingdiagram type \textbf{make view}. You find many examples but I give you my makefile for a simple start in GHDL application.
-\\
-\hrule
-\VerbatimInput{capitalisation/makefile}
-\hrule
-\vspace{10pt}
-
-
-\section{file in/out}
-In former section we had simulate the whole desgin. In larger designs this can be difficult. It needs time to run and it can be also possible some parts are not read. You have to divide the design in moduls and you have to test the moduls by itselfs. Tested moduls can be integated inside the design. The simple 8bit interface is an good standard. Now I show you. How a module can be tested with datas from an file and also put the output into a file. Sometimes is this simpiler to check as a view in a timing diagram. 
-\begin{figure}[H]
-  \begin{center}
-    \includegraphics[scale=0.4]{file_in_out/zeichnung.png}
-  \end{center}
-\end{figure}
-The file \textbf{test.txt} is read and the characters  goes into the capitalisation and are written in the file \textbf{text1.txt}. 
-
-\vspace{10pt}
-\\
-\hrule
-\lstinputlisting[style=vhdl]{file_in_out/tb_file.vhd}
-\hrule
-\vspace{10pt}
-
-\begin{verbatim}
-[test.txt]
-Hallo world! Can you see my text?
-\end{verbatim}
-
-\begin{verbatim}
-[test1.txt]
-HALLO WORLD! CAN YOU SEE MY TEXT?
-\end{verbatim}
-VHDL has only restricted file operations. It is not possible to seek the fileposition.
-
-\section{VHPI Interface to an other language}
-Here I show one of the highest feature of GHDL. It is possible to link code from another language into the simulation. This can be used for a model or an interface to a real hardware. The possible speed is lower as in an FPGA. For testing is this a change to use mor realistic posibilities. You can data interchange of other programs, for instance testing software. In our case the simulation can communicate with a comport emulator. Linux has pseudoterminals witch is a serial interface in driver lowlever exchange of programs. 
-First start the c source file. There are only some c functions.
-\begin{figure}[H]
-  \begin{center}
-    \includegraphics[scale=0.4]{vhpi/zeichnung.png}
-  \end{center}
-\end{figure}
-\vspace{10pt}
-\\
-\hrule
-\lstinputlisting[style=c]{vhpi/tty.c}
-\hrule
-\vspace{10pt}
-
-This package is the glue between external code. All c functions get a wrap of a vhdl definition. That makes possible to call a c function in vhdl. This is the advantage of this VHPI interface.
-\vspace{10pt}
-\hrule
-\lstinputlisting[style=vhdl]{vhpi/tty_pkg.vhd}
-\hrule
-\vspace{10pt}
-Also for that case the testbench.
-\vspace{10pt}
-\\
-\hrule
-\lstinputlisting[style=vhdl]{vhpi/tb_tty.vhd}
-\hrule
-\vspace{10pt}
-And the makefile that you can compile and link all together.
-\hrule
-\VerbatimInput{vhpi/makefile}
-\hrule
-\vspace{10pt}
-In action the simulation prints out the name of the pseudotherminal. I can open a serial terminal program and send datas to the simulation and can also receive the output.
-
-\begin{figure}[H]
-  \begin{center}
-    \includegraphics[scale=0.5]{vhpi/terminal.png}
-  \end{center}
-\end{figure}
-
-\section{closing words}
- The chapter of testbench is very short in the most books. In this article you see the code for testing is adequate to code of application. A simulation is irrecoverable for good results. The development is only effective with simulation. Debug at a later development phase is very difficult. The testbench is the pusher for all effects. The code should also be reusable code. The generic is an interface to set some parameter for a simpler practical integration in the whole application. I hope you could follow all demonstrations and give you idea for better work. 
- 
- \begin{verbatim}
-  the procedure tx_char was posted of Lothar Miller on
-  http:\\www.mikrocontroller.net
-  
-  the VHPI interface for pseudotherminal was posted 
-  of Wojciech M. Zabolotny on comp.arch.FPGA 2011
- \end{verbatim} 
-
-\end{document}
diff --git a/doc/using/UART_srcs/uart.toc b/doc/using/UART_srcs/uart.toc
deleted file mode 100644
index 348a47af4..000000000
--- a/doc/using/UART_srcs/uart.toc
+++ /dev/null
@@ -1,8 +0,0 @@
-\contentsline {section}{\numberline {1}introduction UART transmission}{2}{section.1}
-\contentsline {section}{\numberline {2}advanced TX Unit with FIFO}{2}{section.2}
-\contentsline {section}{\numberline {3}advanced RX Unit with FIFO}{8}{section.3}
-\contentsline {section}{\numberline {4}example application}{13}{section.4}
-\contentsline {section}{\numberline {5}Makefile for workflow}{19}{section.5}
-\contentsline {section}{\numberline {6}file in/out}{19}{section.6}
-\contentsline {section}{\numberline {7}VHPI Interface to an other language}{22}{section.7}
-\contentsline {section}{\numberline {8}closing words}{28}{section.8}
diff --git a/doc/using/UART_srcs/vhpi/Zeichnung.svg b/doc/using/UART_srcs/vhpi/Zeichnung.svg
deleted file mode 100644
index f984c727b..000000000
--- a/doc/using/UART_srcs/vhpi/Zeichnung.svg
+++ /dev/null
@@ -1,424 +0,0 @@
-<?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<!-- Created with Inkscape (http://www.inkscape.org/) -->
-
-<svg
-   xmlns:dc="http://purl.org/dc/elements/1.1/"
-   xmlns:cc="http://creativecommons.org/ns#"
-   xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#"
-   xmlns:svg="http://www.w3.org/2000/svg"
-   xmlns="http://www.w3.org/2000/svg"
-   xmlns:sodipodi="http://sodipodi.sourceforge.net/DTD/sodipodi-0.dtd"
-   xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape"
-   width="297mm"
-   height="210mm"
-   viewBox="0 0 1052.3622 744.09448"
-   id="svg2"
-   version="1.1"
-   inkscape:version="0.91 r13725"
-   sodipodi:docname="Zeichnung.svg"
-   inkscape:export-filename="/home/red/artikel_uart/capitalisation/zeichnung.png"
-   inkscape:export-xdpi="90"
-   inkscape:export-ydpi="90">
-  <defs
-     id="defs4">
-    <marker
-       inkscape:stockid="Arrow1Lend"
-       orient="auto"
-       refY="0.0"
-       refX="0.0"
-       id="Arrow1Lend"
-       style="overflow:visible;"
-       inkscape:isstock="true">
-      <path
-         id="path4245"
-         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
-         style="fill-rule:evenodd;stroke:#000000;stroke-width:1.0pt;"
-         transform="scale(0.8) rotate(180) translate(12.5,0)" />
-    </marker>
-    <marker
-       inkscape:stockid="Arrow1Lend"
-       orient="auto"
-       refY="0.0"
-       refX="0.0"
-       id="marker5517"
-       style="overflow:visible;"
-       inkscape:isstock="true">
-      <path
-         id="path5519"
-         d="M 0.0,0.0 L 5.0,-5.0 L -12.5,0.0 L 5.0,5.0 L 0.0,0.0 z "
-         style="fill-rule:evenodd;stroke:#000000;stroke-width:1pt;stroke-opacity:1;fill:#000000;fill-opacity:1"
-         transform="scale(0.8) rotate(180) translate(12.5,0)" />
-    </marker>
-  </defs>
-  <sodipodi:namedview
-     id="base"
-     pagecolor="#ffffff"
-     bordercolor="#666666"
-     borderopacity="1.0"
-     inkscape:pageopacity="0.0"
-     inkscape:pageshadow="2"
-     inkscape:zoom="0.98994949"
-     inkscape:cx="490.27074"
-     inkscape:cy="477.90138"
-     inkscape:document-units="px"
-     inkscape:current-layer="layer1"
-     showgrid="false"
-     inkscape:window-width="1920"
-     inkscape:window-height="1016"
-     inkscape:window-x="0"
-     inkscape:window-y="27"
-     inkscape:window-maximized="1" />
-  <metadata
-     id="metadata7">
-    <rdf:RDF>
-      <cc:Work
-         rdf:about="">
-        <dc:format>image/svg+xml</dc:format>
-        <dc:type
-           rdf:resource="http://purl.org/dc/dcmitype/StillImage" />
-        <dc:title></dc:title>
-      </cc:Work>
-    </rdf:RDF>
-  </metadata>
-  <g
-     inkscape:label="Ebene 1"
-     inkscape:groupmode="layer"
-     id="layer1"
-     transform="translate(0,-308.26772)">
-    <rect
-       style="opacity:1;fill:#e6e6e6;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       id="rect4590"
-       width="700.03564"
-       height="360.62445"
-       x="34.654861"
-       y="362.42804"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png" />
-    <rect
-       y="478.54639"
-       x="260.19949"
-       height="214.28572"
-       width="252.68301"
-       id="rect4154"
-       style="opacity:1;fill:#ffffff;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="313.14285"
-       y="623.79077"
-       id="text4136"
-       sodipodi:linespacing="125%"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4138"
-         x="313.14285"
-         y="623.79077">capitalisation</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="113.99998"
-       y="645.79077"
-       id="text4140"
-       sodipodi:linespacing="125%"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4142"
-         x="113.99998"
-         y="645.79077">c function</tspan><tspan
-         sodipodi:role="line"
-         x="113.99998"
-         y="677.04077"
-         id="tspan4530">read_data</tspan></text>
-    <rect
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1.99999988;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       id="rect4148"
-       width="156.59319"
-       height="70"
-       x="98.549683"
-       y="615.50507"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <rect
-       y="579.50507"
-       x="296.28574"
-       height="70"
-       width="182.85715"
-       id="rect4150"
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <rect
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       id="rect4152"
-       width="182.85715"
-       height="70"
-       x="520.28577"
-       y="579.50507"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="390.94702"
-       y="512.03662"
-       id="text4168"
-       sodipodi:linespacing="125%"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4170"
-         x="390.94702"
-         y="512.03662">tb_tty.vhd</tspan></text>
-    <path
-       inkscape:connector-curvature="0"
-       id="path4172"
-       d="m 255.57141,626.64789 40.35714,0"
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <path
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 479.57141,626.64789 40.35714,0"
-       id="path4174"
-       inkscape:connector-curvature="0"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:17.1706295px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="-789.13831"
-       y="242.90793"
-       id="text4490"
-       sodipodi:linespacing="125%"
-       transform="matrix(0,-0.86921859,1.1504586,0,0,0)"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4492"
-         x="-789.13831"
-         y="242.90793">8bit parallel</tspan></text>
-    <text
-       transform="matrix(0,-0.86921859,1.1504586,0,0,0)"
-       sodipodi:linespacing="125%"
-       id="text4494"
-       y="440.23749"
-       x="-709.15009"
-       style="font-style:normal;font-weight:normal;font-size:17.1706295px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       xml:space="preserve"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         y="440.23749"
-         x="-709.15009"
-         id="tspan4496"
-         sodipodi:role="line">8bit parallel</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="286.33514"
-       y="505.65875"
-       id="text4517"
-       sodipodi:linespacing="125%"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4519"
-         x="286.33514"
-         y="505.65875">clk</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="279.11826"
-       y="531.00616"
-       id="text4521"
-       sodipodi:linespacing="125%"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4523"
-         x="279.11826"
-         y="531.00616">reset</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="547.81238"
-       y="610.96613"
-       id="text4524"
-       sodipodi:linespacing="125%"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4526"
-         x="547.81238"
-         y="610.96613">c function</tspan><tspan
-         sodipodi:role="line"
-         x="547.81238"
-         y="642.21613"
-         id="tspan4528">write_data</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="651.70575"
-       y="405.86456"
-       id="text4592"
-       sodipodi:linespacing="125%"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4594"
-         x="651.70575"
-         y="405.86456">tty.c</tspan></text>
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="106.25388"
-       y="546.13361"
-       id="text4598"
-       sodipodi:linespacing="125%"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4600"
-         x="106.25388"
-         y="546.13361">c function</tspan><tspan
-         sodipodi:role="line"
-         x="106.25388"
-         y="577.38361"
-         id="tspan4602">read_enable</tspan></text>
-    <rect
-       y="523.50507"
-       x="98.549683"
-       height="70"
-       width="156.59319"
-       id="rect4604"
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1.99999988;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <text
-       sodipodi:linespacing="125%"
-       id="text4606"
-       y="410.8595"
-       x="108.23357"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       xml:space="preserve"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         y="410.8595"
-         x="108.23357"
-         id="tspan4608"
-         sodipodi:role="line">c function</tspan><tspan
-         id="tspan4610"
-         y="442.1095"
-         x="108.23357"
-         sodipodi:role="line">tty_open</tspan></text>
-    <rect
-       style="opacity:1;fill:none;fill-opacity:1;stroke:#000000;stroke-width:1.99999988;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       id="rect4612"
-       width="156.59319"
-       height="70"
-       x="98.549683"
-       y="383.50507"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <path
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 255.57141,586.64789 40.35714,0"
-       id="path4614"
-       inkscape:connector-curvature="0"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <text
-       transform="matrix(0,-0.86921859,1.1504586,0,0,0)"
-       sodipodi:linespacing="125%"
-       id="text4616"
-       y="242.90793"
-       x="-667.19043"
-       style="font-style:normal;font-weight:normal;font-size:17.1706295px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       xml:space="preserve"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         y="242.90793"
-         x="-667.19043"
-         id="tspan4618"
-         sodipodi:role="line">rd_en</tspan></text>
-    <rect
-       style="opacity:1;fill:#ffffff;fill-opacity:1;stroke:#000000;stroke-width:2;stroke-miterlimit:4;stroke-dasharray:none;stroke-dashoffset:0;stroke-opacity:1"
-       id="rect4639"
-       width="168.69548"
-       height="134.3503"
-       x="855.59918"
-       y="397.78336"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="876.81244"
-       y="422.02701"
-       id="text4641"
-       sodipodi:linespacing="125%"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4643"
-         x="876.81244"
-         y="422.02701">terminal</tspan></text>
-    <path
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:2;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1;stroke-miterlimit:4;stroke-dasharray:none"
-       d="m 854.58906,427.07778 c 169.70564,0 169.70564,0 169.70564,0"
-       id="path4645"
-       inkscape:connector-curvature="0"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-    <text
-       xml:space="preserve"
-       style="font-style:normal;font-weight:normal;font-size:25px;line-height:125%;font-family:sans-serif;letter-spacing:0px;word-spacing:0px;fill:#000000;fill-opacity:1;stroke:none;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       x="865.70074"
-       y="457.38235"
-       id="text4647"
-       sodipodi:linespacing="125%"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90"><tspan
-         sodipodi:role="line"
-         id="tspan4649"
-         x="865.70074"
-         y="457.38235">$&gt;</tspan></text>
-    <path
-       style="fill:none;fill-rule:evenodd;stroke:#000000;stroke-width:1px;stroke-linecap:butt;stroke-linejoin:miter;stroke-opacity:1"
-       d="m 735.39106,449.30114 c 0,-1.68359 0,-3.36718 0,-5.05077 0,-0.33671 -0.15059,-0.70898 0,-1.01015 0.21295,-0.42592 0.79719,-0.58423 1.01015,-1.01015 0.15058,-0.30117 -0.15059,-0.70898 0,-1.01015 0.21296,-0.42592 0.79719,-0.58424 1.01015,-1.01016 0.15058,-0.30117 -0.15058,-0.70898 0,-1.01015 0.42592,-0.85183 1.59439,-1.16847 2.02031,-2.0203 0.30116,-0.60234 -0.4762,-1.54412 0,-2.02031 2.09004,-2.09004 -0.0817,3.19386 2.0203,-1.01015 0.30117,-0.60234 -0.47619,-1.54412 0,-2.02031 0.2381,-0.23809 0.77206,0.2381 1.01015,0 0.47619,-0.47619 -0.47619,-1.54411 0,-2.0203 0.2381,-0.2381 0.70899,0.15058 1.01016,0 0.42591,-0.21296 0.67343,-0.67344 1.01015,-1.01015 0.33672,-0.33672 0.79719,-0.58424 1.01015,-1.01016 0.15059,-0.30117 -0.15058,-0.70898 0,-1.01015 0.21296,-0.42592 0.67344,-0.67343 1.01015,-1.01015 0.33672,-0.33672 0.58424,-0.7972 1.01016,-1.01015 0.60233,-0.30117 1.54411,0.47619 2.0203,0 0.2381,-0.2381 -0.23809,-0.77206 0,-1.01016 0.2381,-0.23809 0.70898,0.15059 1.01015,0 0.42592,-0.21296 0.58424,-0.79719 1.01016,-1.01015 0.30117,-0.15058 0.77205,0.2381 1.01015,0 0.23809,-0.23809 -0.2381,-0.77206 0,-1.01015 0.23809,-0.2381 0.70898,0.15058 1.01015,0 0.85184,-0.42592 1.16847,-1.59439 2.02031,-2.02031 0.30117,-0.15058 0.70898,0.15059 1.01015,0 0.42592,-0.21296 0.58423,-0.79719 1.01015,-1.01015 0.30742,-0.15371 2.57553,0 3.03046,0 0.52823,0 3.775,-0.13281 4.04061,0 0.42592,0.21296 0.58423,0.79719 1.01015,1.01015 1.07979,0.5399 0.94052,-0.53989 2.02031,0 0.42591,0.21296 0.58423,0.7972 1.01015,1.01016 0.30117,0.15058 0.70898,-0.15059 1.01015,0 0.42592,0.21295 0.58424,0.79719 1.01015,1.01015 0.30117,0.15058 0.70899,-0.15059 1.01016,0 0.99402,0.49701 3.04659,3.5436 4.04061,4.04061 0.60234,0.30117 1.41796,-0.30117 2.0203,0 4.20402,2.102 -1.07989,-0.0697 1.01015,2.0203 0.2381,0.2381 0.70899,-0.15058 1.01016,0 0.19336,0.0967 3.94393,3.84725 4.04061,4.04061 0.15058,0.30117 -0.2381,0.77206 0,1.01016 0.23809,0.23809 0.70898,-0.15059 1.01015,0 1.21218,0.60609 1.81827,2.42436 3.03046,3.03045 0.30117,0.15059 0.70898,-0.15058 1.01015,0 4.20401,2.10201 -1.07989,-0.0697 1.01015,2.02031 0.2381,0.23809 0.70899,-0.15059 1.01016,0 0.42591,0.21296 0.58423,0.79719 1.01015,1.01015 0.30117,0.15059 0.70898,-0.15058 1.01015,0 1.21218,0.60609 1.81827,2.42437 3.03046,3.03046 0.60234,0.30117 1.54411,-0.47619 2.0203,0 0.2381,0.23809 -0.23809,0.77206 0,1.01015 0.47619,0.47619 1.54412,-0.47619 2.02031,0 0.23809,0.2381 -0.2381,0.77206 0,1.01015 0.23809,0.2381 0.70898,-0.15058 1.01015,0 0.42592,0.21296 0.58424,0.7972 1.01015,1.01016 0.30117,0.15058 0.70899,-0.15059 1.01016,0 0.42591,0.21296 0.58423,0.79719 1.01015,1.01015 0.60234,0.30117 1.41796,-0.30117 2.0203,0 0.42592,0.21296 0.58424,0.79719 1.01016,1.01015 0.6349,0.31745 3.4057,-0.31745 4.04061,0 0.42591,0.21296 0.58423,0.7972 1.01015,1.01015 0.30117,0.15059 0.67343,0 1.01015,0 2.02031,0 4.04061,0 6.06092,0 0.33671,0 0.77205,0.2381 1.01015,0 0.23809,-0.23809 -0.2381,-0.77205 0,-1.01015 0.23809,-0.23809 0.67343,0 1.01015,0 0.33672,0 0.67344,0 1.01015,0 0.716,0 5.79974,0.13059 6.06092,0 0.42592,-0.21296 0.58423,-0.79719 1.01015,-1.01015 0.36531,-0.18265 4.34816,0 5.05076,0 0.70261,0 4.68546,-0.18265 5.05077,0 0.42592,0.21296 0.58423,0.79719 1.01015,1.01015 0.30117,0.15059 0.67344,0 1.01015,0 0.33672,0 0.67344,0 1.01016,0 1.68358,0 3.36717,0 5.05076,0 0.33672,0 0.70898,-0.15058 1.01015,0 3.35025,3.35026 -0.95238,-0.47619 2.02031,1.01015 0.42591,0.21296 0.58423,0.7972 1.01015,1.01016 0.60234,0.30117 1.54411,-0.47619 2.0203,0 0.2381,0.23809 -0.23809,0.77205 0,1.01015 0.2381,0.23809 0.67344,0 1.01016,0 0.33671,0 0.67343,0 1.01015,0"
-       id="path4651"
-       inkscape:connector-curvature="0"
-       inkscape:export-filename="/home/red/artikel_uart/capitalisation/rect4590.png"
-       inkscape:export-xdpi="90"
-       inkscape:export-ydpi="90" />
-  </g>
-</svg>
diff --git a/doc/using/UART_srcs/vhpi/makefile b/doc/using/UART_srcs/vhpi/makefile
deleted file mode 100644
index fdf5bc3b0..000000000
--- a/doc/using/UART_srcs/vhpi/makefile
+++ /dev/null
@@ -1,22 +0,0 @@
-
-
-
-all:
-
-	rm -rf work
-	mkdir work
-	
-	ghdl -a  --work=work --workdir=work tty_pkg.vhd
-	gcc -c -fPIC tty.c  -o tty.o
-
-	ghdl -a  --work=work --workdir=work ../capitalisation/capitalisation.vhd	
-	ghdl -a  --work=work --workdir=work tb_tty.vhd 
-		       
-	ghdl -e -Wl,tty.o  --ieee=synopsys -fexplicit --workdir=work -Pwork tb_tty 
-#	ghdl -r tb_tty  --wave=tbench.ghw  
-	ghdl -r tb_tty  --wave=tbench.ghw  --stop-time=500000us
-
-
-view:
-	gtkwave tbench.ghw a.gtkw
-
diff --git a/doc/using/UART_srcs/vhpi/tb_tty.vhd b/doc/using/UART_srcs/vhpi/tb_tty.vhd
deleted file mode 100644
index 6e1576ed5..000000000
--- a/doc/using/UART_srcs/vhpi/tb_tty.vhd
+++ /dev/null
@@ -1,116 +0,0 @@
---tb_tty.vhd
-LIBRARY ieee;
-USE ieee.std_logic_1164.ALL;
-USE ieee.numeric_std.ALL;
-use work.tty_pkg.all;
-
-ENTITY tb_tty IS
-END tb_tty;
- 
-ARCHITECTURE behavior OF tb_tty IS 
-  	
-signal clk          : std_logic := '0';
-signal reset        : std_logic;
-
-signal data_in     	: std_logic_vector(7 downto 0);
-signal wdata     	: std_logic_vector(7 downto 0);
-signal wr_en        : std_logic:='1';
-signal wr           : std_logic;
-signal rd_en        : std_logic;
-signal rd           : std_logic;
-signal a            : integer;
-signal c            : integer;
-
-
-component capitalisation is
-  port(
-    clk        : in  std_logic;
-    reset      : in  std_logic;
-    --in
-    rdata      : in  std_logic_vector(7 downto 0);
-    rd_en      : in  std_logic;
-    rd         : out std_logic;
-    --out
-    wdata      : out std_logic_vector(7 downto 0);
-    wr_en      : in  std_logic;
-    wr         : out std_logic
-    );
-end component;
-
-   -- Clock period definitions
-   constant clk_period : time := 10 ns;
- 
-subtype by_te is character;
-type f_byte is file of by_te;
-
-BEGIN
-
---file open
-  process
-    begin c<=tty_open(0);
-    wait;
-  end process;
-
---read 
-process (clk)
-
-variable b: integer;
-begin
-  if rising_edge(CLK) then
-    a<= read_enable(0);
-    if a=1 then
-      data_in<=std_logic_vector(to_unsigned(read_data(0),8));
-      rd_en<='1';
-    else
-      rd_en<='0';
-    end if;
-  end if;  
- 
-end process;
-
---write 
-process (clk)
-variable b: integer;
-
-  begin 
-    if rising_edge(CLK) then     
-      if reset='0' then
-        if wr='1' then
-          b:=to_integer(unsigned(wdata));
-          write_data(b);         
-        end if;
-      end if;
-    end if;
-  end process;
-  
-   stim_proc : process
-     begin
-       reset <= '1';
-
-      wait for 50 ns;
-         reset <='0'; 
-      wait;
-    end process;
-
-  clk_process :process
-   begin
-		clk <= '0';
-		wait for clk_period/2;
-		clk <= '1';
-		wait for clk_period/2;
-   end process;
-
-engine: capitalisation 
-  port map(
-    clk        => clk,
-    reset      => reset,
-    --in
-    rdata      => data_in,
-    rd_en      => rd_en,
-    rd         => rd,
-    --out
-    wdata      => wdata,
-    wr_en      => wr_en,
-    wr         => wr
-    );
-END;
diff --git a/doc/using/UART_srcs/vhpi/terminal.png b/doc/using/UART_srcs/vhpi/terminal.png
deleted file mode 100644
index a19f3cd64..000000000
--- a/doc/using/UART_srcs/vhpi/terminal.png
+++ /dev/null
diff --git a/doc/using/UART_srcs/vhpi/tty.c b/doc/using/UART_srcs/vhpi/tty.c
deleted file mode 100644
index c04f8f359..000000000
--- a/doc/using/UART_srcs/vhpi/tty.c
+++ /dev/null
@@ -1,83 +0,0 @@
-/*
-  VPI code allowing you to connect terminal emulator or other program to pty "connected"
-  to the UART-like port in IP core simulated in GHDL.
- 
-  This code is written by Wojciech M. Zabolotny (wz...@ise.pw.edu.pl) on 2nd June 2011
-  and is published as PUBLIC DOMAIN
- 
-*/
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/ioctl.h>
-#include <linux/ioctl.h>
-#include <sys/stat.h>
-#include <sys/poll.h>
-#include <fcntl.h>
-#include <errno.h>
-
-char *ptsname(int fd);
-
-int ptyf = -1;
-
-
-
-int tty_open(int a)
-{
-  ptyf = open("/dev/ptmx",O_RDWR);
-  if(ptyf<0) {
-    perror("I can't open pseudoterminal\n");   
-    return -1;
-  }
-  if(unlockpt(ptyf)<0) {
-    perror("I can't unlock pseudoterminal\n");
-    return -1;
-  }
-  if(grantpt(ptyf)<0) {
-    perror("I can't grant pseudoterminal\n");
-    return -1;
-  }
-  printf("Pseudoterminal: %s\n",ptsname(ptyf));
- // sleep(10);
-  return 0;
-}
-
-
-int read_enable(void)
-{
-  //In the masks below you may omit POLLHUP in this case
-  //disconnection of the terminal emulator from pty will not
-  //stop simulation, and you'll be able to reconnect
-  //the same or different program to pty and running simulation
-  struct pollfd pfd[1]={{ptyf,POLLIN | POLLERR | POLLHUP,0}};
-  int res;
-  res=poll(pfd,1,0);
-  if(res==0) return 0;
-  if(res<0) return 0; //error
-  //If you removed POLLHUP from the mask above, you should remove it below too
-  if(pfd[0].revents & (POLLERR|POLLHUP)) return 0; //disconnected or error?	
-  if(pfd[0].revents & POLLIN)       return 1;
-  return 0;
-}
-
-
-int read_data(void)
-{
-  unsigned char c;
-  read(ptyf,&c,1);
-  return c;
-}
-
-int write_data(int byte)
-{
-  unsigned char c = byte;
-  write(ptyf,&c,1);  
-
-  // Debug: printf("Writing %x to pty\n", c);
-  return 0;
-}
-
diff --git a/doc/using/UART_srcs/vhpi/tty_pkg.vhd b/doc/using/UART_srcs/vhpi/tty_pkg.vhd
deleted file mode 100644
index 99e3a347f..000000000
--- a/doc/using/UART_srcs/vhpi/tty_pkg.vhd
+++ /dev/null
@@ -1,70 +0,0 @@
---tty_pkg.vhd
-library ieee;
-use ieee.std_logic_1164.all;
-use ieee.numeric_std.all;
-
-package tty_pkg is
-
-  function to_integer( s: std_logic) return integer;  
-  function to_std_logic( s : integer ) return std_logic;
-  
-  function tty_open (portn : integer) return integer;
-  attribute foreign of tty_open :
-    function is "VHPIDIRECT tty_open";
-
-  function read_data ( dummy: integer) return integer;
-  attribute foreign of read_data :
-    function is "VHPIDIRECT read_data"; 
-
-  function read_enable ( dummy: integer) return integer;
-  attribute foreign of read_enable :
-    function is "VHPIDIRECT read_enable"; 
-
-  procedure write_data ( data: in integer);
-    attribute foreign of write_data :
-    procedure is "VHPIDIRECT write_data"; 
-
-end;
-
-
-package body tty_pkg is
-
-  function to_integer( s : std_logic ) return integer is
-  begin
-    if s = '1' then
-      return 1;
-    else
-      return 0;
-    end if;
-  end function;
-
-  function to_std_logic( s : integer ) return std_logic is
-  begin
-    if s > 0 then
-      return '1';
-    else
-      return '0';
-    end if;
-  end function;
-
-  
-  function tty_open (portn : integer) return integer is
-  begin
-    assert false report "VHPI" severity failure;
-  end tty_open;
- 
-  function read_data (dummy: integer) return  integer is
-  begin
-    assert false report "VHPI" severity failure;
-  end read_data;  
- 
-   function read_enable (dummy: integer) return  integer is
-  begin
-    assert false report "VHPI" severity failure;
-  end read_enable;  
-  
-  procedure write_data ( data: in integer) is
-  begin
-    assert false report "VHPI" severity failure;
-  end write_data; 
-end tty_pkg;
diff --git a/doc/using/UART_srcs/vhpi/zeichnung.png b/doc/using/UART_srcs/vhpi/zeichnung.png
deleted file mode 100644
index fbfdec259..000000000
--- a/doc/using/UART_srcs/vhpi/zeichnung.png
+++ /dev/null