13 Jan
2013
13 Jan
'13
11:11 a.m.
The PDP-9 will now execute the built-in diagnostic described section
3.7.7.3 of the maintenance manual. This diag copies the contents of
the AR register go through the ADR to increment the value, then to the
MB register and then back to the AC, AR, and PC registers. This means
that much of the I/O bus logic, the CP timing, the registers, the ADR,
and the Control Memory is working. Now we need to fix the core memory
controller and start debugging the rest of the processor and I/O.
--
Michael Thompson
13 Jan
13 Jan
2:29 p.m.
Very cool! There was a PDP-9 at Purdue University back in the day. What
is the origin of the machine which is being restored at the RICM?
On 1/13/13 1:11 PM, Michael Thompson wrote:
The PDP-9 will now execute the built-in diagnostic
described section
3.7.7.3 of the maintenance manual. This diag copies the contents of
the AR register go through the ADR to increment the value, then to the
MB register and then back to the AC, AR, and PC registers. This means
that much of the I/O bus logic, the CP timing, the registers, the ADR,
and the Control Memory is working. Now we need to fix the core memory
controller and start debugging the rest of the processor and I/O.
14 Jan
14 Jan
2:10 a.m.
Hey Michael,
that's fantastic !!!
A team at the ACONIT-museum in Grenoble (France) did a great job and restored a PDP-9
a couple of years ago. Hans Pufal was part of that team. When I visited the museum, he
told
me that the machine broke down again. I wonder what the status of that system is,
currently,
and what Hans has become. Haven't heard anything from/about him for a very long
while.
Kind regards,
Pierre
?
-------------------------------------------------------------------------------
Pierre's collection of classic computers : http://classic-computing.dyndns.org/
----- Urspr?ngliche Message -----
Von: Michael Thompson <michael.99.thompson at
gmail.com>
An: cctech <cctech at classiccmp.org>
CC:
Gesendet: 20:11 Sonntag, 13.Januar 2013
Betreff: PDP-9 Restoration at the RICM
T he PDP-9 will now execute the built-in diagnostic described section
3.7.7.3 of the maintenance manual. This diag copies the contents of
the AR register go through the ADR to increment the value, then to the
MB register and then back to the AC, AR, and PC registers. This means
that much of the I/O bus logic, the CP timing, the registers, the ADR,
and the Control Memory is working. Now we need to fix the core memory
controller and start debugging the rest of the processor and I/O.
--
Michael Thompson
4361
days inactive
4362
days old
2 comments
3 participants
participants (3)
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michael.99.thompson＠gmail.com -
p.gebhardt＠ymail.com -
uban＠ubanproductions.com