Arbeitsdisk is a collection of BASIC programs created in 1987/1988 (class 9/3) and 1988/1989 (class 10/3) by Peter Dell for the PET 8296-D. TheĀ binary download contains a disk image and a folder containing individual files.
Getting the files from the original disk was a real challenge, as we needed two double disk drives, as you can see in this video.