Glen, Earlier this year I wrote a primitive driver so that my HP1000's could talk to CS/80 drives. Even with the CS80 docs it took weeks of tinkering to make the damned thing work. The CS80 protocol really isn't that difficult. All you need is a HPIB protocol analyzer (Joe has one) and some patience. I can help you get started with the command sequences. Getting the HP1000 to to send all the correct sequences is a much larger problem. I never finished the project but, I can do some basic disk functions. I can boot from the 1000, I can read an write absolute sectors, and I can run progrmas from the disk. This in itself is a major accomlishment. If you need any help getting started, just let me know. See ya, SteveRob _________________________________________________________________ Send and receive Hotmail on your mobile device: http://mobile.msn.com