Index: firmware/App/Modes/ModeInitPOST.c
===================================================================
diff -u -r9feea867113c62088f0ce91750127972dbd9bf53 -rf0c52f6adff7b61132953890a74f1c462b31eedf
--- firmware/App/Modes/ModeInitPOST.c	(.../ModeInitPOST.c)	(revision 9feea867113c62088f0ce91750127972dbd9bf53)
+++ firmware/App/Modes/ModeInitPOST.c	(.../ModeInitPOST.c)	(revision f0c52f6adff7b61132953890a74f1c462b31eedf)
@@ -19,6 +19,7 @@
 #include "AlarmLamp.h"
 #include "BloodFlow.h"
 #include "Buttons.h"
+#include "Compatible.h"
 #include "CPLD.h"
 #include "DialInFlow.h"
 #include "FPGA.h"
@@ -46,6 +47,7 @@
 // ********** private function prototypes **********
 
 static HD_POST_STATE_T handlePOSTStatus( SELF_TEST_STATUS_T testStatus );
+static SELF_TEST_STATUS_T execFWCompatibilityTest( void );
 
 /*********************************************************************//**
  * @brief
@@ -101,7 +103,7 @@
     switch ( postState )
     {
         case POST_STATE_START:
-            postState = POST_STATE_WATCHDOG;
+            postState = POST_STATE_FW_COMPATIBILITY;
 #ifdef SKIP_POST
             postState = POST_STATE_COMPLETED;
 #endif
@@ -111,6 +113,11 @@
 #endif
             break;
 
+        case POST_STATE_FW_COMPATIBILITY:
+            testStatus = execFWCompatibilityTest();
+            postState = handlePOSTStatus( testStatus );
+            break;
+
         case POST_STATE_WATCHDOG:
             testStatus = execWatchdogTest();
             postState = handlePOSTStatus( testStatus );
@@ -260,8 +267,9 @@
     }
     else if ( testStatus == SELF_TEST_STATUS_FAILED )
     {
-        requestAlarmLampPattern( LAMP_PATTERN_FAULT );
+        // At least one POST has failed
         tempPOSTPassed = FALSE;
+        // Test that failed should have triggered a fault which will request fault mode, so should POST state machine should never see FAILED state and will fault if it does
         result = POST_STATE_FAILED;
     }
     else
@@ -271,3 +279,21 @@
 
     return result;
 }
+
+/*********************************************************************//**
+ * @brief
+ * The execFWCompatibilityTest function executes the firmware compatibility test.
+ * @details Inputs: none
+ * @details Outputs: none
+ * @return in progress, passed, or failed
+ *************************************************************************/
+static SELF_TEST_STATUS_T execFWCompatibilityTest( void )
+{
+    SELF_TEST_STATUS_T result = SELF_TEST_STATUS_PASSED;
+
+    // TODO - implement
+
+    return result;
+}
+
+/**@}*/