Global initClockIRQ (void): The RTC interrupt isn't supported by the 3DS in DS or DSi modes. Any application that uses it will run on DS and DSi consoles, but not on 3DS. Also, most emulators don't support it either. The alternative is to use initClockIRQTimer(), which uses a timer interrupt instead.
Global rumbleInit (void): Use of peripheralSlot2Init() is recommended instead.