I recently purchased a Raspberry Pi 2 and have the latest (at writing this thread) version of Retropie running. My goal was to 3d print a handheld device to run retro games for my son. Backing up a bit here..I built a full arcade cabinet a few years back running MAME. Can you see where this is going..? So all my ROMS are in .zip format. I ran thru the steps located here (https://github.com/RetroPie/RetroPie-Setup/wiki/Managing-ROMs) which I though would convert them to the proper .extension...not the case. Did a test by extracting on my USB jump driver one of my *.zip files into the needed "retropie" root directory, inserted into Raspberry Pi 2 and based off this Youtube video (https://www.youtube.com/watch?v=OYMoxvbkYD4), thought once inserted would automatically transfer over and then be listed in the Emulator list under ports...as it was a NES game. No such luck, not listed.
And also kind of on that topic of non DC/MAC/Apple...and such, if I bring in a NES or Genesis game, I would assume there is a means to create a NES and Genesis emulator from the list.
In the video it was stated that USB is enabled by default. From within Retropie, how can I get to the terminal screen to get to the config screen to confirm this?
P.S Sorry, not a NIX user but willing to read any links provided to get me where I need to be. There seems to be so much information, rather not have to sift thru it and only read what is required for the task at hand...so not to be over whelmed.