Vicki Pfau

I believe this was fixed in e8e6b803f25d0a873bcce75d71c4ff40ef4371ae, please confirm.

Four Swords does work, but you need to back out of the waiting screen once to get it to register. I'm not sure why, but it's a known bug.

General Purpose mode is...well, there's no timing associated and it's just raw spewing bits at each other. It'll be difficult to support in mGBA, but it's worth keeping this here...

I'm not sure how you came to the conclusion that VBA compatibility has anything to do with this, given it's cheat code handling and not replicating VBA bugs (which is...

Are you sure you have them as the right player? It definitely does work in newer mGBA.

The e-Reader must be one of player 1 or 2, I don't remember which. It won't work if it's the wrong one.

Which generator are you using?

Can you please attach the zip file generated by File > Report Bug?

I've obtained an NSO SNES Controller and will test this soon. I had assumed something strange in the config file might be responsible but I can't find anything.

Yes, the issue seems to be rooted in SDL. Click on each of the buttons that has a - or + on it and hit "clear analog". This should fix...