HP-IB drive simulator

There are 2 parts to this ... Firstly the interface, which is HPIB/GPIB/IEEE488. And scondly the 'command set' -- what to actually send to read/wrtie from the disk. As is well knwom the Commodore PET used HPIB-interfaced drive units, but they won't work on an HP machine becuase the command set is totally different (IIRC the Commodure units are file-orientated, the HP ones are block orientated, for example). Anyway, there were at least 3 command sets ued by HP -- Amigo (mostly used on older flippy drives), SS/80 (more modern floppies and small hard disks) and CS/80 (larger hard disks). I _think_ specifcations of all exist, I have some of the mon paper, or a poke around on http://www.hpmuseum.net/ may find something (for some odd reason this information is often included as an appendix to the boardswapper guides!). What I'd be interested in seeing (having got many old HP machines using such drives) would be a microocnotroller board with an HPIB interface on one side and IDE or SCSI on the other. Shouldn't be _too_ big a project, but it's not something I feel like tackling jsut yet. -tony