ds files virus testing

ok, iv been trying to play ds linux in no$gba but the rom image crashes dos that mand that no$gba can play ds linux or dos it mean it has a ds virus. i want to know before i put it on my ds

If you downloaded it from the official site, it won't have any viruses, if you can't play it, try using a homebrew only DS emulator such as Dualis. It tends to say the Rom image crashed when it gets too buggy or something is wrong with the configuration and since it's a homebrew, it will do that to a few emulators.