@shylock since more or less every videogame supported by retropie is in 4:3, you're always going to get borders on the top and bottom (rather than the left and right that you would get with a 16:9 display. integer scaling won't make a difference.

with vertical MAME games it would be a nice fit, though: smaller borders on left and right than (un-rotated) 4:3 or 16:9 screens.

you'd also probably need to get a custom emulationstation theme done, unless someone has already done a square one, otherwise it's going to a look a little funky it think.

no idea about the performance...

@iw2lsi third party images are not supported here. Ask the image creator for help. Or use the official image if you want support here.

@mitu finally got it working with a Beta version of retropie, found some great Roms too, thanks for taking the time to help dude 👍🏻

It worked! Unbelievable. That is absolutely amazing. Thank you, @mitu !

@mitu Thank you so much. This solved my problem. I never knew there was such trouble just copying files. And thanks again for the advice, copying over wifi and ssh 10.000 small files is really a bad idea.
:)

Fixed, i've made a proper install-

@Run-the-Jewels If you have the Pimoroni controller (X Hat) then you should do what I did, see above. Some additional information is on the Pimoroni forums, see https://forums.pimoroni.com/t/x-hat-retropie-coin-button-exits-game/9633.

If you have another controller, then this might not be the same problem. If this is the case, then I suggest you start a new thread, with detailed descriptions of your hardware, software versions, log file entries etc.

For whomever stumbles upon this topic trying to customize the On-Off Shim, please note that not all GPIO PINs are usable for this circuit.

This is an undocumented bug, which is quite important to know if you try to change the default pins on which the board is connected.

In fact, for the "poweroff pin", which is by default on GPIO 4, only GPIO pins from 0 to 8 can be used. If you use pins over 9, the raspberry will never turn on.

This is because the OnOff Shim relies (undocumented) on the "poweroff_pin" being "ON" all the time, since startup.

As documented on https://elinux.org/RPi_BCM2835_GPIOs the pins 0-8 are by default "pulled HIGH", while all the other pins are "pulled LOW".

There is no problem for the other pin "trigger" (or "status" as it is labeled on the circuit), which can be moved to any other GPIO pin.

Personally, I moved them to pins GPIO 6 (physical 31) and GPIO 16 (physical 36) so they do not interfere with any other attached circuit.

It took me a couple of hours to figure this out, I hope this could be of help to someone else.

Feel free to use the photos. I threw a towel down on the table to stop screws and bolts from rolling around. So, I don't really have a blue and white striped table top. lol. I had to pause the video every couple minutes to allow myself to catch up with the video and to take pictures.