8 Oct
2001
8 Oct
'01
2:18 p.m.
The HP 9000/380 machines uses a 9 pin RS-232 cable for console access, make
certain you are not connecting to parallel. I have one of them, it has to
be one of the sturdiest desktop machines I own.
Zach
----- Original Message -----
From: "Dave McGuire" <mcguire(a)neurotica.com>
To: <classiccmp(a)classiccmp.org>
Sent: Monday, October 08, 2001 9:29 PM
Subject: Re: Half-duplex VT420?
On October 9, Iggy Drougge wrote:
> Since I'll be running another headless computer (HP 9000/380), I brought
home
> my VT420. Nice terminal, but unfortunately this
specimen will only talk,
not
> listen.
> At first, I suspected my HP had lost its settings (the stupid boot PROM
must
> be set via the keyboard to use a serial console).
I proceeded to bring
my HIL
> keyboard home and set it (without any screen) to
use a "remote" console
again,
> and the machine seemed to acknowledge that,
beeping happily. But no
response
from the
terminal. So I tested it with my DECstation. No response there
either. So I hooked it up to my Amiga. Typing at the keyboard, there was
output in NComm, but doing the opposite didn't work at all.
So we have only one-way communication. What could be the problem?
Is flow control enabled on the terminal? I assume you're using a
DB25 adapter at the other end of an MMJ cable. Try turning off flow
control in the communications setup menu and shorting pins 2-3 on the
connector. At that point the terminal should echo what you type back
to the display. If it doesn't, you might have a toasty RS232 line
receiver in your terminal.
-Dave
--
Dave McGuire
Laurel, MD