HP-IL (was Re: HP9000 model 710 workstation(Apollo 700).)

From: Eric Smith <eric_at_brouhaha.com>
Date: Thu Jul 18 00:36:04 2002

I wrote (about HP-HIL):
>> It's my understanding that electrically it forms a loop, because the
>> last device loops the data back. I could be wrong -- it wouldn't be
>> the first time.

Joe wrote:
> I'm pretty sure that you're correct about the name but I don't
> understand how they know what device to put the "loop" into since
> almost any HP-HIL device could be the last one on the chain.

The last device can tell that there are no further devices chained to
it.

I should have said "logically" rather than "electrically"; I do NOT think
there is electrical connectivity of the data line.
Received on Thu Jul 18 2002 - 00:36:04 BST