Nintendo 64 Hardware View controller pak status
Insert a controller pak into a controller. Then, hold Start and power on the system. Continue to hold Start until a menu appears with the status of the controller pak. Note: This only works on games that use the controller pak.
Recalibrate controller
At anytime when the system is powered on, and the Analog-stick becomes off-centered, hold L + R and press Start.
The image featured at the top of this post is ©The Legend of Heroes: Trails of Cold Steel III key art / Original