diff --git a/sw/kernel/devices/rtc.s b/sw/kernel/devices/rtc.s
index 2d66d16..5f47134 100644
--- a/sw/kernel/devices/rtc.s
+++ b/sw/kernel/devices/rtc.s
@@ -15,13 +15,13 @@ RTC_OUTPUT          = $30
 RTC_CONTROL         = $30
 
 THRESHOLD_0         = $a0
-; THRESHOLD_1         = $0f
-THRESHOLD_1         = $00
+THRESHOLD_1         = $0f
+; THRESHOLD_1         = $00
 THRESHOLD_2         = $00
 THRESHOLD_3         = $00
 
-; IRQ_THRESHOLD_0     = $32
-IRQ_THRESHOLD_0     = $10
+IRQ_THRESHOLD_0     = $32
+; IRQ_THRESHOLD_0     = $10
 IRQ_THRESHOLD_1     = $00
 IRQ_THRESHOLD_2     = $00
 IRQ_THRESHOLD_3     = $00
diff --git a/sw/kernel/kernel.c b/sw/kernel/kernel.c
index 766c18c..6441fb3 100644
--- a/sw/kernel/kernel.c
+++ b/sw/kernel/kernel.c
@@ -6,7 +6,9 @@
 
 
 void handle_rtc_interrupt() {
-    cputs("In IRQ interrupt!\n");
+    // cputs("In IRQ interrupt!\n");
+    cputc('A');
+    send_eoi();
     asm volatile ("rti");
 }