You can also run DeltaWave more than once
That's a useful feature, and appears to work just fine.
I remember running some Microsoft Office program (Excel?) on my late 80s Macintosh. Couldn't do work and see the help file at the same time, so I copied and renamed the application to get two instances running, to assist me with the use of some oddball functions.
Soon, the hard disk made a noise and the Mac crashed.
I said "Huh..."
Restarted it, didn't note any corruptions, and proceeded to open two instances again. The hard disk made a worse noise and the Mac locked up.
I said "Huh..."
Unfortunately, that was the utter end of that hard disk.
Power on, clunk.
Coincidence? I dunno. Didn't try it again.