Index: firmware/App/HDCommon.h
===================================================================
diff -u -r116e7a0b38092b9272396b9d7dab112b4e9a3441 -r92f32196d272e32f9480e82dd09a038bb68753bc
--- firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 116e7a0b38092b9272396b9d7dab112b4e9a3441)
+++ firmware/App/HDCommon.h	(.../HDCommon.h)	(revision 92f32196d272e32f9480e82dd09a038bb68753bc)
@@ -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>