diff --git a/notes.md b/notes.md
index 96f86d7..11dd7be 100644
--- a/notes.md
+++ b/notes.md
@@ -36,3 +36,4 @@
 2014-12-15T18:47:00 - Quick fix, referencing a known issue from the official repo (pulp-runtime)
 2014-12-15T08:00:00 - Trying out boneh-franklin approach for IBE (ref. 2003 paper) (pulp-runtime)
 2014-12-15T20:09:00 - Trying out boneh-franklin approach for IBE (ref. 2003 paper) (pulp-runtime)
+2014-12-15T04:45:00 - Experimenting with FPGA constraints (source: Trimberger 'Three Ages of FPGAs') (pulp-runtime)