Is it possible to "remove" an emulated memory card in Nintendont?
This might seem like a completely useless feature, but
20XXTE will use a combination of removing the memory card and resetting the console to
lock its settings so they can't be tampered with in a tournament setting. The creator, Dan Salvato,
has no plans to support locking the settings through other means, so allowing emulated memory cards to be "removed" by Nintendont would be the only way to do this if no real memory card is available.
The way I would implement this would be with a new setting like "Memcard Removal" that's off by default, which would allow the emulated memory card to be "removed" with a button on the console (either the sync button, or holding the reset button for more than one second). Note that implementing this with a button combination would be useless in a tournament setting, as the "Native Control" setting would always be enabled.