Default button mappings for Neogeo Games (as of now):
A = A
B = B
Y = D
X = C
- = Start
+ = Insert Coin
How to set ingame difficulty for Neogeo Games:
Download the MVS/AES Unibios from here:
http://unibios.free.fr/download.html
Unzip the uni-bios.rom file and rename it to asia-s3.rom
Overwrite the asia-s3.rom in your neogeo.zip (bios) with the renamed uni-bios rom.
Copy the neogeo.zip back to the roms folder.
Then watch this youtube video from the referenced timecode forward, to get a basic understanding how the unibios works:
h**ps://youtu.be/TuAlriFwjlQ?t=207
First boot a Neogeo game, then exit it, then boot it again. From now on you can change the games soft dip switch settings, by pressing BYX (all three buttons simultaniously) during the unibios boot screen (From there select the soft dip settings.). This is what the software menu for the Arcade cabinet would have looked like back in the day (see
http://goo.gl/4KckFd for reference
), and in there usually you also can find a difficulty setting for the game. You exit with X and "exit".
How to use cheats in Neogeo Games:
Follow the description above to set up unibios. Then in game press "-" and BAX simultaniously. An in game menu will pop up, with the first option being cheats for the game thats currently loaded up. Unibios has quite a solid database for cheats built in, it should work in most games. A to select, B to disable all cheats, X to exit the menu.
Overall - its a good Idea to use cheats and different difficulty modes sparsely - as it does impact how you will experience the game. Most games you'll be able to get through just fine, with unlimited continues - which pFBA provides out of the box. But on some (SNK
) beat em ups, and especially when you are using the switch in handheld mode - at least lowering the default difficulty might be a thing worth looking into...
Should you want to/need to reset settings for a specific game - there are individual configurations for each game you played in a config folder on the SD card. Delete a specific games config, and all your changes will be reset.