So I am a big Nerdcore junkie. Loving video game music and Nerdcore music. As of such, I have a LOT of 8-BIT Chiptune music in my iTunes library. But I also have music that would be considered 16-Bit, like SNES Game OTS and what not. 

I know that 8 Bit music is referred to as Chiptune, or sometimes Chipmusic as the title of the genera. But I'm trying to figure out what I should put as the genera for my 16 bit music songs. Google isn't much help with the search, and then I stumbled across this site. Figured I'd ask here! What genera is 16 Bit music called? Like how 8 bit is Chiptune. 
Is it MIDI? Or is a MIDI something different? What do I call it?
Thank you for your help.