This is one of countless reasons that I regard the ADAM as not much more <than a cruel joke ;) CP/M on a cassette based system? And one which <uses a non-standard cassette format (off-the-shelf tapes won't work)... <How many CP/M apps were produced in "Digital Data Pack" format? Any? It was an attempt to produce a system that was low cost but still have a block device (disk usually). The tapes were digital casette and was a standard format for the time. It was however an interesting machine. I'd love to find one and/or the prints for it. I'm interested in how they did the tape system. Allison