Speed Up Games on Flashcart

Hello, I was wondering if there is a way or program that could speed up your game. Like on computer emulators, there is usually a button to press that brings the game speed and processes up to 300%. I was just wondering if this is possible.

I know it's possible on NesDS

No.emulators can only do it because the host system is vastly more powerful than the system being emulated.

I vaguely remember that there is a flashcard who has a slow-motion option.
I know Lameboy can do it as well.

i believe supercard has this option, or was it the cyclodsi. i forgot. but it was one of those with extra hardware so it can be able to do it