Can't access to mame menu with tab button

[Ronaldinho10]

Hello Guys,
I made a mess with my mame configuration , so now when i press tab in mame nothing happen (i ve tried all the others keyboard and joystick buttons ,how can restore it ?
Thank you for your help

[senkun]

/opt/retropie/emulators/whicheverflavourofmame/cfg/default.cfg

edit: ok it's here: /opt/retropie/configs/whicheverflavourofmame/cfg/default.cfg

[Ronaldinho10]

Thank you for the answer , which line in retroarch.cfg i have to change ?

[dankcushions]

if you rebound it via the mame internal menu, then it's probably fixable by fixing the mame.ini or cfg. i don't think retroarch knows about the mame internal menu.

what mame core are you using?

[Ronaldinho10]

The version of the mame is MAME 0.37b5

I found the mame . cfg in this path

/opt/retropie/emulators/mame4all

but when i open the mame.cfg there are few options.
and the readme file says about mame.cfg:

mame.cfg -> MAME configuration file, limited support to only the options in the supplied file (not the full MAME settings) :(

[dankcushions]

did you break it in the first place via the tab menu? if so, have a look in
/home/pi/RetroPie/roms/mame-mame4all/
/home/pi/RetroPie/BIOS/
it may be in there or a sub-folder. i don't use mame4all, so just guessing here...

[Ronaldinho10]

there is nothing in that paths for reconfig the buttons:(

[senkun]

@Ronaldinho10

/opt/retropie/configs/mame-mame4all/cfg/default.cfg

you can either try fix it there or just delete it and it'll regenerate to defaults and you can start over.

[Ronaldinho10]

I find the default.cfg

tried to edit but was full of strange symbols, so i deleted it, and now all works fine.

Thany you all guys !:)