From: Tony Duell <ard at p850ug1.demon.co.uk>
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!).
If anyone is interested I wrote an HP-913x emulator which I have used very
successfully with my HP1630B logic analyser. Not the most elegant pieces of
code, but it does work! It behaves like an HP drive to the 1630 but stores
everything on my PC hard drive. It's a base Amigo emulatation and I only
included the functionality necassary to make it work, but the code's should
not be difficult to extend to SS/80 and CS/80. I can post the source for
someone to put it somewhere more accessible and permanent. Let me know.
Peter