Do Apple II Tape use GCR? Do it use address field and EOR checksum? Please provide technical information if you know how it works. It is the same example that Beneath Apple DOS 3.3/ProDOS book explains everything for Disk II Family. What about Apple II Tape? I mean to be real cassette tape that is not for backup tape. -- Yours Truly, Bryan Parkoff BParkoff@satx.rr.com