diff --git a/Source/DSPSpy/main_spy.cpp b/Source/DSPSpy/main_spy.cpp
index c77d37f5b6..c8082768eb 100644
--- a/Source/DSPSpy/main_spy.cpp
+++ b/Source/DSPSpy/main_spy.cpp
@@ -454,6 +454,7 @@ void handle_dsp_mail(void)
     else if (mail == 0x88885370)
     {
       real_dsp.SetInterrupt(false);
+      CON_PrintRow(4, 25, "Test %d", real_dsp.CheckInterrupt());
       //real_dsp.SendMailTo(real_dsp.CheckInterrupt() ? 0x99995372 : 0x99995370);
       //while (real_dsp.CheckMailTo())
       //  ;
diff --git a/Source/DSPSpy/tests/external_interrupt_status_bits.ds b/Source/DSPSpy/tests/external_interrupt_status_bits.ds
index 8d5650c89f..c2cddb1d1e 100644
--- a/Source/DSPSpy/tests/external_interrupt_status_bits.ds
+++ b/Source/DSPSpy/tests/external_interrupt_status_bits.ds
@@ -30,10 +30,11 @@ test_main:
 	; We store a copy of $SR in $AR0.
 	MRR $AR0, $SR
 	; $IX0 is set to SR_100, so we can add it to $AR0 repeatedly to cycle through $SR bits.
-	LRI $IX0, #0x0100
 	; Subtract $IX0 from $AR0, so that we can add it the first time to get $SR
 	; (and have $AR0 always match $SR instead of overflowing)
-	SUBARN $AR0
+	LRI $IX0, #0x2000
+	ADDARN $AR0, $IX0
+	LRI $IX0, #0x0100
 
 	LRIS $AX0.H, #1
 	CALL send_back
@@ -41,7 +42,7 @@ test_main:
 	; We're checking 5 bits in $sr, so 1 << 5 or 0x20 times.
 	BLOOPI #0x20, main_loop_last_ins
 		CLR $ACC0
-		ADDARN $AR0, $IX0
+		SUBARN $AR0
 		MRR $SR, $AR0
 
 		; Tell the CPU to set the external interrupt