Bill McBrine ([log in to unmask]) wrote: : As title mentions, I have a 35401 AR tape drive here. The HP 35401A is a tape autochanger based around the the HP 9144A tape drive. It is compatible with the 9144A and can usually be used as a direct replacement. It was produced in the early 1980s and ceased production in the late 1980s. It can store 67Mb on each 600ft preformatted cartridge. These drives use a command set known as CS/80 that was built on top if the HP-IB protocol. The command set is documented in the "CS/80 Instruction Set Programming Manual", part number 5955-3442. The version I have is the fourth printing dated April 1983. This does have the tape drive extensions, but does not have the autochanger extensions for the 35401A. This manual will be very hard to get hold of today. The HP 35401A was intended for use on HP computer systems. It was supported on HP3000 and HP9000 systems. I cannot remember whether it was ever supported on HP1000 systems. Use on any other system woudl require the writing of a special driver for the device. This would not be trivial. Hope this helps, Mark Simms --------------------------------------------------------------------- Name: Mark Simms | Org: Hewlett-Packard Profession: Software Engineer | Computer Peripherals Bristol Unix-mail: [log in to unmask] | United Kingdom --------------------------------------------------------------------- "Life is short and the ROM is full" (Bill Wickes) --------------------------------------------------------------------- Opinions expressed are my own and are not intended to be an official statement by Hewlett-Packard Company ---------------------------------------------------------------------