diff --git a/desmume/src/MMU_timing.h b/desmume/src/MMU_timing.h
index 74e418277..2f45cccc1 100644
--- a/desmume/src/MMU_timing.h
+++ b/desmume/src/MMU_timing.h
@@ -29,6 +29,7 @@
 #include "MMU.h"
 #include "cp15.h"
 #include "readwrite.h"
+#include "debug.h"
 #include "NDSSystem.h"
 
 ////////////////////////////////////////////////////////////////
@@ -318,6 +319,14 @@ FORCEINLINE u32 _MMU_accesstime(u32 addr, bool sequential)
 			// by reading 32 bytes...
 			c += 8 * M32*2;
 		}
+
+		if(CheckDebugEvent(DEBUG_EVENT_CACHE_MISS))
+		{
+			DebugEventData.addr = addr;
+			DebugEventData.size = READSIZE;
+			HandleDebugEvent(DEBUG_EVENT_CACHE_MISS);
+		}
+
 		return c;
 #elif defined(ACCOUNT_FOR_NON_SEQUENTIAL_ACCESS)
 		// this is the closest approximation I could find
diff --git a/desmume/src/debug.cpp b/desmume/src/debug.cpp
index d83814b35..ac1c40d64 100644
--- a/desmume/src/debug.cpp
+++ b/desmume/src/debug.cpp
@@ -43,6 +43,7 @@ u32 debugFlag;
 
 //DEBUG CONFIGURATION
 const bool debug_acl = false;
+const bool debug_cacheMiss = false;
 
 static bool acl_check_access(u32 adr, u32 access) {
 
@@ -102,6 +103,16 @@ void HandleDebugEvent_Execute()
 	acl_check_access(DebugEventData.addr,CP15_ACCESS_EXECUTE);
 }
 
+void HandleDebugEvent_CacheMiss()
+{
+	if(!debug_cacheMiss) return;
+	extern int currFrameCounter;
+	if(currFrameCounter<200) return;
+	static FILE* outf = NULL;
+	if(!outf) outf = fopen("c:\\miss.txt","wb");
+	fprintf(outf,"%05d,%08X,%d\n",currFrameCounter,DebugEventData.addr,DebugEventData.size);
+}
+
 //------------------------------------------------
 DebugStatistics DEBUG_statistics;
 
diff --git a/desmume/src/debug.h b/desmume/src/debug.h
index 6b20a3e92..4f474191f 100644
--- a/desmume/src/debug.h
+++ b/desmume/src/debug.h
@@ -147,8 +147,9 @@ enum EDEBUG_EVENT
 {
 	DEBUG_EVENT_READ=1, //read from arm9 or arm7 bus, including cpu prefetch
 	DEBUG_EVENT_WRITE=2, //write on arm9 or arm7 bus
-	DEBUG_EVENT_EXECUTE=4, //prefetch on arm9 or arm7, triggered after the read event
-	DEBUG_EVENT_ACL_EXCEPTION=8, //acl exception on arm9
+	DEBUG_EVENT_EXECUTE=3, //prefetch on arm9 or arm7, triggered after the read event
+	DEBUG_EVENT_ACL_EXCEPTION=4, //acl exception on arm9
+	DEBUG_EVENT_CACHE_MISS=5, //cache miss on arm9
 };
 
 enum EDEBUG_NOTIFY
@@ -201,6 +202,7 @@ void HandleDebugEvent_Read();
 void HandleDebugEvent_Write();
 void HandleDebugEvent_Execute();
 void HandleDebugEvent_ACL_Exception();
+void HandleDebugEvent_CacheMiss();
 
 inline void HandleDebugEvent(EDEBUG_EVENT event)
 {
@@ -210,6 +212,7 @@ inline void HandleDebugEvent(EDEBUG_EVENT event)
 	case DEBUG_EVENT_WRITE: HandleDebugEvent_Write(); return;
 	case DEBUG_EVENT_EXECUTE: HandleDebugEvent_Execute(); return;
 	case DEBUG_EVENT_ACL_EXCEPTION: HandleDebugEvent_ACL_Exception(); return;
+	case DEBUG_EVENT_CACHE_MISS: HandleDebugEvent_CacheMiss(); return;
 	}
 }