--- a/master/fsm_master.c	Mon Apr 27 15:20:14 2009 +0000
+++ b/master/fsm_master.c	Wed Apr 29 09:43:04 2009 +0000
@@ -867,6 +867,9 @@
 
 	// find DC reference clock
 	ec_master_find_dc_ref_clock(master);
+
+    // calculate bus topology
+    ec_master_calc_topology(master);
 	
     // Attach slave configurations
     ec_master_attach_slave_configs(master);