Nintendo's entire argument in that case revolved around the unauthorized use of their encryption keys to bypass their DRM. None of the consoles mentioned in this manpage use encryption this way (and aren't powerful enough to do so in software.) So they're fine. IANAL.
Note that 10NES style lockout systems are NOT "technological protection measures" under the DMCA, because they don't restrict access to the copyrighted works themselves (the games), but instead restrict what games the console will play.
The one Game Boy emu dev who canceled their project was being overly cautious
Note that 10NES style lockout systems are NOT "technological protection measures" under the DMCA, because they don't restrict access to the copyrighted works themselves (the games), but instead restrict what games the console will play.
The one Game Boy emu dev who canceled their project was being overly cautious