2 mouses to recalbox, MAME games

[mjh]

Can You advise, how to connect 2 mouses to recalbox? (even if it´s possible).
I have a setup where I did diy spinner & diy trackball from 2 pcs of USB mouses. Would like to configure those for respective MAME games. For example Arcanoid (a spinner). Centipede (a trackball).

Another question when running game in advance mame can´t start configuration UI. Should open pressing "TAB" on the keyboard, right? Any clue which conf file I have maybe messed and what file to remove to recover this state?

[Dragu]

@mjh said in 2 mouses to recalbox, MAME games:

Another question when running game in advance mame can´t start configuration UI. Should open pressing "TAB" on the keyboard, right? Any clue which conf file I have maybe messed and what file to remove to recover this state?

You may first try to delete /recalbox/share/saves/mame/mame2003/cfg/xxxx.cfg (Tab Menu key configuration)
After, if always wrong /recalbox/share/saves/mame/mame2003/nvram/xxxx.nv (F2 Menu Some internal stuff)
Some things like Dip switch could be saved inside the game. Better to always keep an original copy.
As example Space Gun gives an EEprom error after recalibration, this error is known. So I think is an illegal write attempt.