I've made an Arduino device that mimics the Sega mini's 3B Controller, so that I can use original Sega 3 button controllers on the mini. It works flawlessly on an unmodded mini. It also works in the game selection screen and in the games on a mini with Project-Lunar installed on it, the only exception being the project-lunar boot menu. On the screen where the user can select an emulator the controller does nothing at all. I can work around it by skipping the boot menu or using the mini's controller to control the menu. But I'd like to fix the issue I'm having.
I've made an Arduino device that mimics the Sega mini's 3B Controller, so that I can use original Sega 3 button controllers on the mini. It works flawlessly on an unmodded mini. It also works in the game selection screen and in the games on a mini with Project-Lunar installed on it, the only exception being the project-lunar boot menu. On the screen where the user can select an emulator the controller does nothing at all. I can work around it by skipping the boot menu or using the mini's controller to control the menu. But I'd like to fix the issue I'm having.
What could be the cause of this odd behaviour?