Betson / Imperia

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    I have a Betson / Imperial Arcade VGA monitor that I’m trying to get working. Has anyone ever used one of these before?

    Here is a link to a review of it:

    I was able to get the RetroPi to boot up and display on it by setting the following in the /boot/config.txt file.


    However when I launch a game in MAME the mode changes on me and the monitor can’t display it.

    How do I go about setting the display modes that MAME and other emulators used so they don’t switch.

    The HDMI to VGA adapter I’m using is also is a cheap ebay one. so maybe that’s my problem too. I would have thought it would convert the signal down but it seems the Pi has to set the right signal.

    Anyone have any thoughts on this?

    Thanks! Apologies if this post doubles or triples – it wouldn’t post the first time.

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