added ReleaseNotes.txt change for commit 813aa74 (tag v1.5.6)

diff --git a/ReleaseNotes.txt b/ReleaseNotes.txt
index 4d9c2874f8e1e0bb22c43ac3626bbeb99796d7e3..8009f17869a9a7bc458b65911cda14248ca424dd 100755 (executable)
--- a/ReleaseNotes.txt
+++ b/ReleaseNotes.txt
@@ -2,6 +2,12 @@
   Ka-Ro Electronics GmbH
 
   ===========================================================
+ v1.5.6 (2013-08-19)
+  Changes:
+    TX53:
+      - updated SDRAM initialization to work with NT5CB128M16 mask
+        revision 'F' (see: TX53-PCN-2013-08.pdf)
+
  v1.5.5 (2012-09-25)
   Changes:
     TX27: