Index: firmware/App/HDCommon.h
===================================================================
diff -u -r103cded4274ee07cc54841cf98c244ff77ce38a7 -rff5aac7569e6069ca4e2f4c3c61e44977fa4fa97
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 103cded4274ee07cc54841cf98c244ff77ce38a7)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision ff5aac7569e6069ca4e2f4c3c61e44977fa4fa97)
@@ -35,6 +35,7 @@
 //    #define BOARD_WITH_NO_HARDWARE          1           // Target is a PCB w/ no hardware
 //    #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 CARTRIDGE_TEST_BUILD            1           // Build to support cartridge testing
 
     #include <stdio.h>
     #include <strings.h>