Index: firmware/App/HDCommon.h
===================================================================
diff -u -r7c79b8922e7799a46b1f10626ad985c58f61f12d -rfb714597ad515d3774d69b94808f065788504724
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 7c79b8922e7799a46b1f10626ad985c58f61f12d)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision fb714597ad515d3774d69b94808f065788504724)
@@ -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>