This is so cool, thus guy made the famicom disk system drive (which is a quick disk format) work with NSX using quick disk bios. Here is the youtube video.
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Actually, that video looks like a Sony drive with quick disk commands? (Or may be it is a famicom disk, I've never seen a black one...)
But this tweet shows the famicom disk with msx (actually a game gear that has been modified to play msx games) Link