I've just done this with an ipac2.
You can configure player 2 in the retro arch menu (vids on you tube)
When entering the player 2 button key binds ...Check the order compared to player 1. Strong chance it will not be what you think.
Once you have done that you can quickly map your button inputs and save.

@cbob72 no probs dude, glad I helped.

after moving all the.sh files and re writing the paths it all works now doom and all the other classic fps games are all now one system complete with logo

Okay, so all versions will probably be fine. It has nothing to do with debugging for emulating.

@stino you'll need to use the sudo command to elevate to root privileges. Without sudo at the beginning, you won't have write access to the file. Also, you'll need to open this in an editor, so try sudo nano /etc/dnsmasq.conf which should open in the nano text editor for you to mess with. Remember to save when exiting with ctrl x

@goldenhoof Do you mean a button to exit jzIntv? If so, then the following thread may be useful: https://retropie.org.uk/forum/topic/7656/mapping-a-quit-button-to-a-gamepad-on-jzintv

Be sure to check the Docs for jzIntv on using keyboad hack files:
https://retropie.org.uk/docs/Intellivision/
https://retropie.org.uk/docs/Mapping-a-Controller-for-Intellivision/

@haemogoblin Yes, it works exactly like that by default for libretro emulators Select and Start exits to the menu. To begin, you should read this https://retropie.org.uk/forum/topic/3/read-this-first and provide info on your setup quickly followed by https://github.com/retropie/retropie-setup/wiki/First-Installation#configure-controllers which explains everything you are asking.

Did you follow these steps: https://github.com/RetroPie/RetroPie-Setup/wiki/Running-ROMs-from-a-USB-drive#automatic-mount-easiest-method
As that is in my opinion the easiest way.

@dunken No. Cheats are game specific and some contradict each other. You can't just have every cheat enabled at once. How can you start on level 2 and level 6 at the same time for example?
Some "cheats" are even designed to make a game more challenging, ie "start with 50% health"

@mike001 yes.

http://www.raphnet-tech.com/products/wusbmote_adapter/index.php

@gorgar sorry for saying i didnt know how to do it. I forgot that i figured it out as this is the only emulator i know of that lets you do it.

@mitu I never ended up doing this I realized I'm an idiot and I could just transfer all the other ROMs to the SD card lol thanks for the help though

@kalimah You say you tried "a couple of ways" but don't detail these. Please provide more information. There is only one reliable way to manually install RetroPie on top of Raspbian and that is the official way. Please see docs

@dnaeye So you able to run Raiden fighters in retropie now...? might to share ?

I've hidden my BIOS files by scraping all of the files, then selecting "Parse gamelists only" from the start menu on emulationstation, then manually deleting the bios entries in the gamelist.xml files.

It's a little time up front, but it's clean. Just have to remember to unselect the "Parse gamelists only" option when adding new, unscraped roms, then scrape them, then select it again.

@treaves Ow! Ow. My eyes! It burns! Help!

@dankcushions you were TOTALY right, I needed a BIOS but the one that worked the best for me ant let me save my game was the CPH 7502, thank you very much friend