diff --git a/notes.md b/notes.md
index 744ac31..fb5094f 100644
--- a/notes.md
+++ b/notes.md
@@ -117,3 +117,4 @@
 2017-04-21T03:56:00 - Testing bigger LLM config, referencing 'Attention Is All You Need' (pulp-runtime)
 2017-04-21T02:30:00 - Testing bigger LLM config, referencing 'Attention Is All You Need' (pulp-runtime)
 2017-04-21T06:14:00 - Refactor for clarity, might break a few tests though (pulp-runtime)
+2017-04-27T19:32:00 - Experimenting with FPGA constraints (source: Trimberger 'Three Ages of FPGAs') (pulp-runtime)