There are people working on it for the GBA. https://www.retrorgb.com/gba-consolizer-an-hdmi-720p-gba-kit.html https://www.retrorgb.com/gba-consolizer-an-hdmi-7

There are people working on it for the GBA. https://www.retrorgb.com/gba-consolizer-an-hdmi-720p-gba-kit.html https://www.retrorgb.com/gba-consolizer-an-hdmi-720p-gba-kit...