From [Zophar's Domain][1]:

> This is a port of YAME to the Mac. It's a multiconsole emulator, and
> all the documentation is in Japanese. It supports TurboGrafx-16,
> NES, and Game Boy.

While the documentation is most certainly in Japanese, the emulator
itself appears to be in English. I tested it and it appears to work
fine on Mac OS 9.2.2 on my PowerBook G4 M8592.

Zophar's Domain says this emulator is at version 0.37, but the about
screen identifies it at version 0.10, make of that what you will.

If someone who is fluent in Japanese could go through MacYAME's
documentation and put more info about it here, I'd really appreciate
it as my Japanese is atrocious.

By the way, compatibility with games isn't fantastic, TurboGrafx-16/PC
Engine games seem to work best for the most part. Lots of issues with
NES games whether it is incorrect palettes (looking at you Super Mario
Bros.), garbled imagery, or straight up not loading, along with
incorrect sounds and such. Game Boy games also don't seem to work at
all (just a grey screen every time). Your mileage may vary wildly
depending on the game in question.

Compatibility
Architecture: PPC

PowerPC 604 processors and up (G3's shouldn't be an issue)
Mac OS 8 (8.5/8.6 Compatible)

  [1]: http://www.zophar.net/macintosh/mame/macyame.html