Use this tool to determine if your guest screen will work within the mega-demo.
The production bootsector, loader and kernel are embedded in the generated bootable MSA file, alongside your selected file.
This makes it possible to check that the whole montage works correctly, before submitting your entry : if everything goes well, after your screen gives up control, a static screen (Skuul gfx by Dieu/HMD) should be displayed, and then you should loop to the beginning...
More infos there : specifications for the guests screens