THE IBM RS/6000 7025-F80
Notes on my IBM Enterprise Server.

SYSTEM INFORMATION
* RISC System designed for AIX (v4.33 through 5.3)
* 450 Mhz PowerPC_RS64-III
* 512 MiB ram
* 2x9.6 + 2x9.6 GiB disks

DOCS
UTILS
NOTES ON SERIAL
I have one NULL-modem cable that seems to work, and of the two USB/Serial
converters, one works. My Libretto CT70 works as well. The settings that works
for me is 9600 8N1 and Hardware Flow Control.
Here's a log of booting installation cd [serial-install.txt] from stand-by
state, via serial, the first part is the Service Processor Firmware. The
communication was initiated by pressing ENTER

I've not achieved login via serial console, I've tried lots of stuff, except
"the right cable" which I may not have, or, maybe my USB-Serial device does not
implement the missing lines.. This section will be updated if I ever get it
working. However, the serial was enough to allow me to configure the installed
AIX system enough to get access over ethernet.

GETTING NETWORK ACCESS

Inserting the AIX install media (version 4.3.3), and pressing 5 right after
the first beep (when it tells you to do so), made it boot from CD.

The installer allows you to, well, install the system, or enter a shell
to attempt to recover the system (the third option).

After many failed (and painful, due to how slow the machine boots) attempts at
getting Login to run on the serial console, I decided to try if I could maybe
get networking working instead, telnet is a lot nicer anyway..

I inspected the inetd configuration and it looked like telnet should be enabled.
So I used smitty to configure the ethernet card for DHCP.

I also used the passwd to change the root password to something known.
(If you don't want to reset the passwords, you could use John The Ripper to
crack the passwords, they crack in seconds).

I couldn't believe my eyes when the machine answered pings and telnet let
me login.

HISTORY OF MY SYSTEM
While I explored the system a bit, I respect that it may contain sensitive
information, and so, while I did learn who operated it, and what the machine was
used for, I've chosen to destroy any non-system data. So, what I've learned is
that the system was in the posession of "Aarhus Radiolager", and there was a
Navision XAL database system installed on there. The user .profiles indicated
that whenever a user logged on, they were not presented with a shell, but
instead with the Navision Text User Interface (TUI) asking them to login.
Navision is a system which is used for accounting, and as so, might contain
sensitive information, for this reason, I did not attempt to login to the
system, but exited as I saw the "login dialog". The database files have been
deleted. The disk volume was overwritten with random bytes before being
reformatted. A 128 port async pci card is installed and I found a few user-made
scripts relating to the serial ports, suggesting that the machine may have been
used via serial terminals.

NEXT STEPS
This system is.. extremely big, heavy, slow (to boot) and generally unwieldy..
Impractical for any purpose in 2021.. But... It's history, it's beautiful in its
brutal industrial design. It's amazing to think that for almost no money, we can
now own industrial-quality machines that served entire corporations.

I'm considering whether to reinstall the AIX system, maybe going for version
5.3. I have no planned uses for the machine. It does use over 200 watt just
being turned on, and it's not entirely silent, even if not as unpleasantly loud
as more modern systems.

I will probably experiment with X11, even if I can't get graphics on the system
directly, I should be able to use it as an X server, and connect to it from my
Linux machine, assuming the X11 protocol is 22 years backwards-compatible.

GRAPHICS
Multiple PCI shielding plates are missing, suggesting that at some time, more
PCI cards have been installed. It also seems unusual to have a system ship with
PS/2 connenctors for mouse/keyboard but without a display adapter, but not
impossible. Unfortunatey, while exploring, I didn't catch the output of diag -a
which probably told me exactly what was removed.. Oh well.

I tried multiple PCI VGA cards, from S3 to ATi, even an MGA one which looks to
have the same chip as one of the officially supported cards. While the LED
indicator did turn on for the card, diag did not mention it, and lsslot listed
it as an unknown device. So I guess you can't just throw any random PCI graphics
card into one of these machines and expect it to work. It should be noted that
while all ports are 64 bit, and there should be compatibility with 32 bit cards,
I have only access to 32 bit cards, and so, do not know if a random 64 bit pci
graphics card might have worked.. If I stumble upon an officially supported card
(for _VERY_ cheap) I might consider getting it. It'd be such a fun picture: Sit
in front of this giant and play solitaire ;)


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Last edited: 2021-11-18 - No need for a disclaimer, I've done nothing wrong!

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