This is amazing. It brings back memories of the first time I taught myself 6502 assembly, there was a book called “The Visual Computer” that came with an emulator on a floppy disk. It was very eye opening! I found a PDF of the book [1] but not sure if the software on the floppy survives anywhere.
Not sure about the C64 one but I've seen the Apple ][ one on the software archive sites before sites before. It's The Visible Computer, a reference to these educational models:
[1] https://files.commodore.software/reference-material/books/c6...