2008/9/10 Jason T <silent700 at gmail.com>:
On Wed, Sep 10, 2008 at 12:36 PM, <g-wright at
att.net> wrote:
The DN-3xxx where also used as headless servers
and used the serial
port to load and set it up. only problem the connector has 3 ports in one.
they used a special 1>3 cable to break it out. Just remove the video card.
I'm guessing removing the vid card would force the Apollo to show
console on the serial port? How hard is to find/make the 1>3 serial
cable?
It should be a simple case of not having a keyboard. I don't think
removing the graphics card is necessary. I don't recall it being
anything special, so 9600 baud, 8 data bits no parity should work just
fine.
The 1 > 3 serial cable is pretty trivial to make if you have a
soldering iron. The first serial port - the one that does console
action - is at all the usual pins for PC crippled 25 pin RS232. At
least pins 2,3 and 7!
What form does the O/S take for th 3500? Disk or
tape? Is it public
domain or abandonware yet?
Later versions are on tape. O/S is DomainOS. Latest version of
DomainOS needs the November 1997 date patches.
I am guessing close to abandonware - but not quite. As I understand
it, HP is still the copyright holder. I seem to remember reading
something that effectively states that the license goes with the
hardware - so by owning the hardware you effectively have a license to
run DomainOS on that hardware. I'll recheck this next time I can get
at a booting DomainOS machine.
Simon
--
------------------------------------------------------------------------
"Well, an engineer is not concerned with the truth; that is left to
philosophers and theologians: the prime concern of an engineer is
the utility of the final product."
Lectures on the Electrical Properties of Materials, L.Solymar, D.Walsh