Defined by http://apple.com/ Implementations AppleWin, an emulator in C++ Native Language 6502 machine code Other Languages Applesoft BASIC Links http://www.zophar.net/apple2.html Commentary Cat's Eye Technologies' Applesoft BASIC offerings assume that they will be running on an Apple ][+, but will generally also run on an Apple //e. Of course, these days, it's more likely you'd be running this software on an emulator instead of a museum piece. I've found AppleWin to be a decent Apple emulator on Windows; I have yet to find one for Linux that's good enough to be my go-to emulator (pun? what pun?).