The BIOS Files are in the rom folder of "AdvanceMame".
It were about 40, which i renamed to (i.e.) "ZZZ BIOS - CPS1" to get them all together on the bottom of the gamelist and hide them.
As mentioned the only two ones that are still visible since a couple of weeks in full mode are Akklaim PSX and Naomi.
It does not really disturb me!!!, but i will Post the filenames as soon as i am back on my Pi 😉
any easy guides on how to do this? Keep in mind I have only had a raspi for about 24 hours, with 20 of them being me fighting it.
You really should read on about the Raspberry Pi and RetroPie in general before trying to customize your installation. Themes can be installed from the RetroPie setup script - https://retropie.org.uk/docs/Themes/.
@iamtyce@DougA I finally managed to solve the problem with an HDMI splitter and an HDMI-to-VGA converter. 😄 The latter doesn't change the resolution, but my projector accepts the analog signal in contrast to the digital HDMI signal, which it refused as "unsupported". I just had to adjust the picture a bit via the projector's controls, as it was slightly off to the left and only partly visible.
A mentionable obstacle was that only one out of three HDMI splitters I tried worked with the 1600x1200 pixels DMT signal from the Pi. The other two only accepted CEA signals (see HDMI mode options in the official Raspberry Pi documentation). Strangely enough, all three splitters look exactly the same from outside apart from the brand logo.
Ok I've tried a couple different things and I've run out of ideas. I know it's probably some stupid little thing I'm missing, but I have no clue why RetroPie is ignoring config.txt even with overscan_scale=1. Is it a glitch?
@foxcek please read my last post. Can you take a picture of the tv screen when you hit the info button or change the channel to the video mode you are using? I want to see what mode its on. Plus a pic of the back of your tv's video hookups with and without the cables plugged in.