Index: firmware/App/HDCommon.h
===================================================================
diff -u -r7ce686fa967206c341805b79916298ae187854de -r85457b793bef9f18e2d04cbc8f901c138eae3609
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 7ce686fa967206c341805b79916298ae187854de)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 85457b793bef9f18e2d04cbc8f901c138eae3609)
@@ -35,7 +35,7 @@
 #ifndef _VECTORCAST_
 //    #define RM46_EVAL_BOARD_TARGET          1           // limited build runs on RM46 eval board
 //    #define BREADBOARD_TARGET               1           // old breadboard system build - no longer used?
-//    #define SIMULATE_UI                     1           // build w/o requirement that UI be there
+    #define SIMULATE_UI                     1           // build w/o requirement that UI be there
 //    #define TASK_TIMING_OUTPUT_ENABLED      1           // re-purposes alarm lamp pins for task timing
 //    #define SKIP_POST                       1           // skip POST tests - all pass
     #define LIMITED_NVDATA_CRC_CHECKS       1           // only perform POST CRC checks on nv-data records that are implemented so far