I have read and researched forever, I can't seem to resolve this issue. I'm planning to build my own racing arcade cabinet. I have a regular two player arcade machine with MAME that I built myself, and a virtual pinball machine, so I'm no stranger to tricky configurations. Right now, I'm just trying to figure out the software before I actually build anything.
I have a Logitech G29 with the pedals and shifter. I thought I'd just start with Out Run in MAME to help understand the configuration options, etc.
Installed MAME, put the ROM in the folder, configured the wheel to 270 degrees, started up the game, and clicked TAB to configure controls. The moment I clicked on Pedal 2 and pressed the accelerator all the way down to set that control, the MAME interface started scrolling like crazy. Had to hold the gas pedal half way down to get it to stop. Holding all the way down made it scroll up.
So I went to the general config area for MAME and re-configured (in the User Interface area) keys for Up and Down to,be only the keyboard arrows. It originally had joypad up and down in as well, and I don't know why the has pedal is being seen as joypad up or down. Anyway, that stopped the scrolling,
But in the game, the gas pedal doesn't seem to do anything until it has been pressed about half way down. Then it starts accelerating. Brake seems to function totally normally.
Get to the end of the game, asked to input initials because I got a high score. But the first initial is automatically registered as "A", and after that when I choose my initial, nothing happens when I press the gas pedal to input a letter. Can't input any letters, have to wait for the time to run out before I can start the next game.
So, why the scrolling? Why the gas pedal not working until depressed half way? And why can't I input my initials using the gas pedal? Help me out, please! I gotta make this work to complete the ultimate homemade game room! Thanks in advance.