MAMEWorld Forums - EmuChat - Re: Logitech G27 pedals not working properly in latest build

> Unfortunately, I had NO idea how to do this, and it took a bit of trial and error, as
> I simply couldn't figure out how to map my pedals in this fashion. But after simply
> messing about with the option, I finally realized how to accomplish the task....you
> have to re-map the pedal input THREE times in a row before it assigns the negative
> value(ie Joy 1 Gas-).

Input configuration is documented:
https://docs.mamedev.org/usingmame/ui.html#configuring-inputs

> VasCrabbs.....can you shed some light on why this was changed in MAME, where the user
> is required to assign their pedal inputs to have a negative value in order for them
> to reach their maximum input value? In older builds it was not this way. Not
> complaining just curious.

If the pedal uses the entire axis range, the dead zone will be in the middle of the range rather than at the end. It also causes problems if you want to assign a pedal for a UI control if the neutral point isn’t zero.