probably not the best forum in the world to ask but there might be one or two people geeky enough to help

decided i wanna complete all the zelda games in order, just started the first NES one, downloaded it as it's the only nintendo console i dont have

i think there's some pretty major glitches though, so if anyone could tell me 100% that certain 'screens'/bits of the map aren't supposed to repeat themselves infinitely, then i'll give up on this version and find something new. also certain little other things i dont understand

i've downloaded the game a few times, different .nes files, and tried it on two NES emulators (nester and fceux) but they've all got the same thing which makes me think that maybe im just being retarded.

tl;dr:
recommend me a good NES emulator plz
confirm that something is definitely wrong plz