It was quite a successful platform here in Europe, a few years ago my dentist and my ophthalmologist still used ST software in an emulation environment (presumably MagicPC). It was also wildly popular among musicians.
Im going to guess here as i dont actually know but I would say the software side would run, how well might depend on the Pi board and version your using.... Hardware such as a dongle.... im going to say very unlikely, so i'll at a guess say no to that.
it looks like a distro of ARAnyM, while the ARAnyM as a VM is very fast, the level of compatibility is still not good. If you want something more compatible, then go for HATARI. And you actually run a MiNT (GNU based) OS over the EmUTOS, something you can run on real ATARI. That is why it is looking "like" Linux.
I am a little confused about the download and unzipping. I downloaded a zip file Beepi-3-Rpi4.zip and extracted it. I got all those *.7z.001 through *.7z.009. I was able to open the archive for .001 which has an IMG file and a PDF file. I am not sure about the rest of the files *.7z.002 though *.7z.009.
The download was split into a number of reference files, most unzippers are able to reassemble the uncompressed file using the sub files. So if you have a .IMG and .PDF file then thats fine, it all worked.
