Please read my license notice before copying my photos.
This is an emulator for the Apollo dn3000 and dn3500 that I wrote, based on the Musashi 68000 emulator. I call it the Otterlator. It's far from complete but you can run the prom debugger.
Also contains a MacOS executable, thanks to Landon Rodgers.
otterlator.tar.gz
bitsavers
University of Michigan Apollo Archive
I'm no longer working on my emulator because Hans Ostermeyer has written one called ost.apollo.mess based on mame/mess that is complete enough to run Domain/OS. You can get it from the University of Michigan Apollo Archive.
Jim Rees