-Added 'chapter 9) RadioHDL directory structure'.

tools/hdltool_readme.txt

@@ -36,7 +36,14 @@ Contents:
   a) Creating the Quartus project files
 
 8) Design revisions
-  
+
+9) RadioHDL directory structure
+  a) applications
+  b) boards
+  c) libraries
+  d) software
+  e) tools  
+
 100) To do
 101) More ideas
 
@@ -534,6 +541,40 @@ And in 'hdllib.cfg' you specify the libraries and keys you need, in this case 'u
 
 
 
+9) RadioHDL directory structure
+
+Currently, the RadioHDL SVN repository is contained within the UniBoard_FP7 SVN repository, at the following URL:
+
+https://svn.astron.nl/UniBoard_FP7/RadioHDL/trunk
+
+The above location might change in the future.
+
+The following sections describe the subdirectories that exist in the trunk/.
+
+a) applications/
+   . Contains firmware applications designs, categorized by project.
+
+b) boards/
+   . Contains board-specific support files and reference/testing designs
+     . [board]/designs/
+       . Contains application designs that can be run on that board to test board-specific features.
+     . [board]/libraries/
+       . Contains board-specific support files, such as firmware modules to communicate with board-specific ICs.
+
+c) libraries/
+   . Library of reusable firmware blocks, categorized by function and in which generic functionality is separeted 
+     from technology. Within technology another seperation exists between generic technology and hardware-specific
+     IP.
+
+d) software/
+   . Intended for software such as control/monitoring of boards and programs to capture and process board output,
+     e.g. sent via Ethernet to the processing machine.
+
+e) tools/
+   . Contains the tools that are described in this readme file.
+
+
+
 100) To do
 
 a) modelsim_config.py command line arguments: