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Diagamblic has also the same problem as me (on everdrive x7) about not working save sram. He just said that on facebook

But I don't know if it can be uploaded ? For exemple, I know catskull electronic's arduinoboy lite can't be uploaded with arduino ide while standard arduinoboy can. So maybe it's the same for genMDM? I don't know...

If my solution works (it works but after using cc9 (preset normally but sometimes i'm wrong because I use hexadecimal ccs number on lgpt or lsdj)) then it should "simply" add a preset on default channels. But, I think it's not the same thing, it works but maybe it also limitate.

I finally get it working, if someone come here and have similar problems, installing pixel (lxde for retropie) is the way to go. After doing that, all became easyer, I saw the error messages, can manage boot in autostart.sh (have to write : startx yourfile.sh instead of emulationstation)

Installing raspbian without retropie didn't work, even by using video driver which is in overlay folder of boot. So keeping retropie but adding pixel was the solution as retropie can understand that, and can understand that you want to start it instead of buggy emulationstation

I played with frame_width, fame_high for have good screen (not too small) and a little (not too much) with overscan_top/left

the sound have crackling/poping, like have raspis... but It's much better that at the beginning, it was really worse at first...

Now If I want better sound I have to figure out how use an external soundcard and be recognized. Both my ur242 and zoomH4n are not recognized, on the pi boy or on my other raspberry pi, same problem.

I found that the old documentation (for previous version) is more understandable. I'm not on the computer now but I can send you. The last time I wanted it it was not available on internet and I asked catskull electronics to send me it.

I think there are also several bugs like : I don't know why you have to activate cc9 for enable fm synthesis on other channels than 1. If I don't there is nothing on default on it.

I can't respond to your question but for now the best controller I used for genMDM was lgpt on raspberry pi with midi. But your project looks promising keep going!!

Now it is installed, I don't know if it was but I did it. But the problem is the same... sound is still horrible...

it's hard because I have to start pi boy, quit emulation station for have the terminal, then plug usb adaptor with ethernet + keyboard, and type commands by hand. I have to figure how connect to ssh on it

With my other pi, I found the quality of audio pretty ok! I used it here (there is also genesis but you can easy know what is what) :
https://www.youtube.com/watch?v=3D4FZJC … el=MazHoot

So maybe this pi boy 3b+ pi can also do it? I don't know what is the version of my other pi...

Ah ok herr_prof nice idea i have usb to ethernet adaptor so it should work (no wifi here)

But right now my problem is dirty audio in lgpt. I see in other threads that the principal solution was external usb audio interface. But maybe it's outdated because audio works good on my other raspi without usb interface and i would prefer much without

Maybe i should create a new thread for that because it's related to rasppi not specific to pi boy. The audio problem is on a pi3b (which is inside pi boy)