diff --git a/README.md b/README.md
index 473c5d8..a77fb18 100644
--- a/README.md
+++ b/README.md
@@ -19,10 +19,12 @@ documentation
 * [coppershade.org downloads](http://coppershade.org/articles/More!/Downloads/)
 * [copper timing details](http://coppershade.org/articles/AMIGA/Agnus/Copper:_Exact_WAIT_Timing/)
 * [coding forum](http://ada.untergrund.net/?p=boardforums&forum=4)
+* [coding forum](http://eab.abime.net/forumdisplay.php?f=112)
 
 tools
 =====
 * [imagecon](tools/imagecon/README.md)
+* [makeadf](tools/makeadf/README.md)
 
 cross development environment
 -----------------------------
@@ -113,3 +115,11 @@ Notes:
     # cp *.h /usr/local/include/pngquant/
     # cp *.a /usr/local/lib
 ```
+
+license
+=======
+Some of the code I have included in this repository is copyright by various authors and provided under various licenses. Copyright notices are preseved where possible.
+
+Some of the tools use GPL licensed libraries which would mean they could only be distributed under the conditions of the respective version of the GPL.
+
+All code without a copyright notice is probably in the public domain.
\ No newline at end of file
diff --git a/tools/makeadf/README.md b/tools/makeadf/README.md
new file mode 100644
index 0000000..5348ce2
--- /dev/null
+++ b/tools/makeadf/README.md
@@ -0,0 +1,8 @@
+makeadf
+=======
+
+The simplest form for ADF creation.
+
+Disk layout must be handled by the assembler/linker.  This tool only calculates the checksum and pads the disk image to the correct size.
+
+This code is taken from [this forum post](http://eab.abime.net/showpost.php?p=895070&postcount=6)
\ No newline at end of file
diff --git a/tools/makeadf/makeadf.c b/tools/makeadf/makeadf.c
index ca995a5..500dce8 100644
--- a/tools/makeadf/makeadf.c
+++ b/tools/makeadf/makeadf.c
@@ -13,7 +13,8 @@
 uint8_t image[DISKSIZE];
 
 
-static void boot_chksum(uint8_t *p)
+static void 
+boot_chksum(uint8_t *p)
 {
   uint32_t oldchk,chk=0;
   int i;