Good evening all, 

First off, [32gb]-Arcade.Reboot.Extended.Rpi4-Wolfanoz is a great build!

I have no issue running the build, boots up, music working and the transitions are smooth. All the mame games play full screen and run great.

However, the Nintendo games boot as you would expect, there is a marquee around the image (looks like a Nintendo system) and it only shows half the screen. I can see the left side of the screen and roughly 2/3rds of the height.  I’ve traded changing the screen size to 3/4, no difference.

Any thoughts as to why this would happen when so many other systems are working  well?