Nintendo switch Emulator (e3DSx) allows you to play switch Games on your PC, Android,iOS or Mac. Once you have the ROMs and emulators downloaded, you can actually play retro games on macOS. So don’t worry about finding macOS-compatible ROMs, since such a thing doesn’t exist. As far as the ROM is concerned, the emulator is the operating system. Note that ROMs themselves don’t care about your operating system. Finally, sdltrs provides some other enhancementsto xtrs, such as the ability to copy and paste from the host to/fromthe emulator, the ability to save and load the emulator state, diskindicator LED's, fullscreen display, and onthe Mac, to emulate an Epson printer as well. Since I am theauthorof Atari800MacX, which is based on libSDL, it made it easy for me tomakea TRS80 xtrs port based on SDL, so it would run on Windows and Linux aswell as Mac OS X.Second, sdltrs provides a text menu based GUI, which is more userfriendly interface than the interfacextrs provides. Why did I write another emulator? Several reasons.First, and foremost,there was no TRS-80 emulator available for Mac OS X. Instead of using theX-Window system for graphics, it uses the portable SDL library. It has been ported fromTim Mann's excellent X-Windows UNIX emulator xtrs. Sdltrs is a Radio Shack TRS-80 Model I/III/4/4Pemulator for Macintosh OSX, Windows, and Linux.