How do you actually play the games

Weird topic but please bare with me...
I've seen numerous screenshots of emulated games and comments on how playable they are but I haven't seen anything on how they are actually played.
I mean, snes games for example, they're designed for a dpad on left and 4 buttons on right with 2 triggers. The a620/4150/x30 all have dpad with 2 buttons on either side, not to mention short 2 buttons. How do you play like this?
I've seen numerous screenshots of emulated games and comments on how playable they are but I haven't seen anything on how they are actually played.
I mean, snes games for example, they're designed for a dpad on left and 4 buttons on right with 2 triggers. The a620/4150/x30 all have dpad with 2 buttons on either side, not to mention short 2 buttons. How do you play like this?