1 files changed, 2 insertions, 0 deletions

diff --git a/tcl/init.tcl b/tcl/init.tcl
index 6621e6a..689a61c 100644
--- a/tcl/init.tcl
+++ b/tcl/init.tcl
@@ -14,6 +14,8 @@ proc pin {loc net} {
 pin E1  clk
 pin J15 reset_n
 
+# This is the clock for timing-driven synthesis, not timing analysis.
+# See clocks.sdf for the other clock.
 create_base_clock -fmax "50 MHz" clk
 
 proc add_files {typ ext dir} {