Thank. God. That was so much easier (though I still confused myself.) At least doing it that way I can test it in the game and change it on the fly if it wasn't right. Megadrive/Genesis is mapped correctly, so now I just need to work on the MAME games themselves (which I can save per game config instread of per core.) Thank you so much!

Do you have higher resolution versions posted somewhere? 720 or 1080 16:9 ratio? Thanks in advance, I like the simplicity.

@paffley Edit my posting: The Revenge of Shinobi is the last title in the list. I wonder also why.

@mitu Life saver! I did a RetroPie update through install script (to update all packages). That fixed my problem.

@denzilla try scraping again but selecting megadrive instead. disregard the fact the Genesis folder exists at all.

Hey, i wanted to ask a somewhat related question: what could be the reason that my screensaver never plays genesis snaps when the screensaver is running? Every system i have on my retropie 4.4 makes an appearance as a random video screensaver and it doesnt matter if the snaps are located within the emulationstation folder or in the rom folder for the system itself. I'm just puzzled as to why my genesis games don't show it. Would it have anything to do with having changed all mentions of megadrive to genesis within emulationstation and this having borked whatever emulationstation looks to when seeking random videos?

Bumping this, might help clarify matters for several other GPGX users! ekeeke replied to me about this, explaining the following regarding the new MAME sound engines: *ASIC version corresponds to the chip model used in later Model 1 consoles and most Model 2 consoles. It features the better (not distorded and less noisy) DAC output and full address decoding of status register (which causes slower music in Hellfire since it was developed for the discrete chip version) compared to discrete chip version. Enhanced version has same "enhanced" features as ASIC version + full resolution DAC (14-bit instead of 9-bit in real hardware versions) + zero busy flag time (busy flag in FM status is only emulated for real hardware chip versions). It corresponds to an "idealized" version of the chip, like it is emulated in other Genesis emulators. The low pass filter is unrelated to the chip DAC and exists in all console models (it is implemented by analog circuitry outside of the chip). It should be enabled for accurate emulation of analog sound output (and disabled if you prefer the clear sound of pure digital emulation). Filtering ratio is configurable because it varies for each console models (also between model 1 consoles or between model 2 ones) so it's up to you to find a value that matches your own memory of accurate sound. Default value should correspond to Model 1 VA4 console.*

@shirion have you tested multiple games? Are they all having this issue? Which region ROMs are you using?

@mistermints fun times!

@luisv96 said in Certain roms dont work on lr-genesis-plus-gx: @mitu when i try to run verbose logging nothing happens What do you mean "nothing happens"? Did you check the log in/dev/shm/runcommand.log ?

@titchgamer Good to hear you were able to solve. Yes, sometimes things can really get messed up. Backup is your friend ;-)

@capeman Nope, I had to manually rewrite it. It seems swapping the controllers caused it to automatically over write it. Strange really :s

@mediamogul This did the trick for me thank you! sudo rm /home/pi/RetroPie/roms/genesis/megadrive I got the issue when I launch the setup update script from retropie, now is all working again!

@DorkVonWaterfall said in Mega Drive Mini: Radica MD I was lucky enough to get one of those mini genesis hubs from shirtpunch before they sold out. As for the select button, can you not map select to two impossible key presses (ie up+down) and solder a tiny button to the traces with diodes?

solved it! I just rebuilt the filesystem in another SD card and now everything is working. Probably I have corrupted the configuration moving manually the images of the megadrive. Thanks guys

Good luck with the project, but you can fit everything in the case without removing ports from the Pi. I even (almost) fit a USB drive inside. I mean, if you want to, you can, but it's not required for it to fit.