Mame2003 (Libretro) Disable Ipac2 Button 3 (Space Bar) speeding up the ROM

[ruxton_bruce]

I am running my Mame ROM's using mame2003 and whenever I press Button 3 on my iPac2 joystick (which maps to the same button as the space bar) the game runs at double the speed. As an example whenever I press Button 3 in Metal Slug (Throw a bomb) the ROM speeds up and I have to press Button 3 to slow it down again. It effectively toggles a speed up function on every ROM I play in Mame2003.

How can I disable this or map it to a different button. I have tried hitting TAB and tried to find it somewhere under the Inputs but I cant find anything there. I have also tried finding something in the Retroarch setting without any luck.

Any help much appreciated.

Kind Regards

[caver01]

@ruxton_bruce TAB will bring up the MAME GUI which you found out. What you are seeing is a retroarch behavior called fast forward. You need to edit your retroarch.cfg file, probably for all libretro cores, so you want to edit /opt/retropie/configs/all/retroarch.cfg

Look for:
input_toggle_fast_forward = space

And map it to "nul" or some other key. It's a good opportunity to browse through here and see if there are any other features enabled with keys mapped that would conflict with your controller keys.

[ruxton_bruce]

Thanks heaps for that mate - you're a legend.

Just wanted to add that I had to adjust the /opt/retropie/configs/mame-libretro/retroarch.cfg and set input_toggle_fast_forward = space to nul to get it working for Mame2003.

Without your help I never would have found this though so thanks again

Cheers

[caver01]

@ruxton_bruce Yes, that works too, but it can come up again in another libretro core (like lr-fba-next) and you would have to add it to that config too. I was suggesting it for ALL.