Index: firmware/FTM/ftm_definitions.vhd
===================================================================
--- firmware/FTM/ftm_definitions.vhd	(revision 10241)
+++ firmware/FTM/ftm_definitions.vhd	(revision 10243)
@@ -303,5 +303,5 @@
 -- Timing counter
   constant tc_width : integer := 32;    -- width (number of bits) of timing counter
-
+  constant zero : unsigned (tc_width - 1 downto 0) := (others => '0');
   
 end ftm_constants;