Change the reset timing of pad_read to resolve a sort of traditional 1-frame delay problems. It still has 1-frame delay problem. However, unless you're using non-Windows port or MessagesInImage=TRUE, you shouldn't experience it anymore.

For me, it's not so easy to solve those traditional timing issues...

Add IPPU.InMainLoop for future use.

controls.cpp

@@ -3320,12 +3320,6 @@ void S9xControlEOF (void)
 	do_polling(POLL_ALL);
 
 	S9xMovieUpdate();
-
-	if(!pad_read)
-		IPPU.PadIgnoredFrames++;
-
-	pad_read_last = pad_read;
-	pad_read      = false;
 }
 
 void S9xSetControllerCrosshair (enum crosscontrols ctl, int8 idx, const char *fg, const char *bg)

cpuexec.cpp

@@ -188,11 +188,15 @@
 #include "missing.h"
 #endif
 
+static inline void StartS9xMainLoop (void);
+static inline void EndS9xMainLoop (void);
 static inline void S9xReschedule (void);
 
 
 void S9xMainLoop (void)
 {
+	StartS9xMainLoop();
+
 	for (;;)
 	{
 		if (CPU.NMILine)
@@ -308,6 +312,26 @@ void S9xMainLoop (void)
 		S9xSyncSpeed();
 		CPU.Flags &= ~SCAN_KEYS_FLAG;
 	}
+
+	EndS9xMainLoop();
+}
+
+static inline void StartS9xMainLoop (void)
+{
+	extern bool8 pad_read, pad_read_last;
+	pad_read_last = pad_read;
+	pad_read      = FALSE;
+
+	IPPU.InMainLoop = TRUE;
+}
+
+static inline void EndS9xMainLoop (void)
+{
+	extern bool8 pad_read;
+	if(!pad_read)
+		IPPU.PadIgnoredFrames++;
+
+	IPPU.InMainLoop = FALSE;
 }
 
 static inline void S9xReschedule (void)

ppu.h

@@ -238,6 +238,7 @@ struct InternalPPU
 	uint32	SkippedFrames;
 	uint32	FrameSkip;
 	uint32	PadIgnoredFrames;
+	bool8	InMainLoop;
 };
 
 struct SOBJ