HP Amigo command set and HFS disk format

From: Tony Duell <ard_at_p850ug1.demon.co.uk>
Date: Sun May 4 12:58:00 2003

> BTW while looking at this manuals while replying to this I found a
> dection in the 9114 manual that says that it respondes to the SS-80 and
> FILBERT protocalls. I've heard some people on the HP Museum website say
> that Filbert was the code name of the 9114 during developement but it
> appears that it's a protocall and not a code name.

As I understand it, the codename for the 9114 was Pompeii. So called
because it was designed to fit under the Thinkjet printer, codenamed
Vesuvius. And that code name came from the way the Thinkjet works, by
boiling the ink -- a bit like a miniture volcano...

The 82161 tape drive was code-named Filbert. The protocol used by that
drive became known as the Filbert protocol, and was a de-facto standard
for HPIL mass storage devices. The 9114 uses Modified Filbert Protocol --
modified in that it responds to device-dependant commands to report the
drive's size, etc. For example, the HP71 attempts to use that command to
determine the size of a mass storage device. If the command it not
accepted, it assumes the devices is a 82161 with 512 blocks. The HP41
just asseums that all devices are 512 blocks (!).

This is documented, in part, in the HPIL IDS for the HP71, and in the
HP75 NOMAS documentation (particularly the bit on MELROM).

-tony
Received on Sun May 04 2003 - 12:58:00 BST