I never even thought about this … the TRS-80 alive!
I started my microprocessor programming on a TRS-80 Model-I … and I still have it around in the basement! I never even thought about the fact that (of course) someone was going to write an emulator for these old boxes. It only makes sense … if MAME can be created to emulate the old game machines, then it was just a matter of time until the old Z80 machines like the TRS-80 were emulated …

Catweasel to DMK 2.1 (Default). Use a Catweasel to copy any SD or DD floppy to TRS-80 emulator image format. [freshmeat.net]