That's a simulator, not an emulator, even if the author calls it an "high level emulator". It doesn't even have the blinking cursor.
Well, what do you know? Version 2 is out, and it does
have a blinking cursor! As well as 1D array support, more resolutions, windowed mode, some bugfixes and some easter eggs. The URL is always the same: http://devilmaster.altervista.org/hi65.html