15 May
2014
15 May
'14
11:42 p.m.
Hello ClassicCMP`s
I`am resorating an TU56 dual drive. It is clean now, i repaired the
powersupply, i formated the capacitors and i checked if all modules that
needed are existing.
My question before first "smoke test" is done is....
In the engeneering drawings "Module Utilization" are shown special
places for each module. In my drive the Modules on different places then
in the drawing.
Is the backplane a real bussystem or got i use the ports shown in drawings?
Marco
P.S.: Is it allowed to send pictures as attatchment to the list? Or
wants the moderator killing me when i do?
16 May
16 May
12:02 a.m.
Hi Marco,
I wish I had one!
If I recall correctly, some of the boards like the G888, depends on which
controller you are using. There may be other differences between the system
it is used on, PDP 8, PDP11, etc.
Good luck, Paul
On Fri, May 16, 2014 at 1:42 AM, Marco Rauhut <marco at familie-rauhut.eu>wrote:
Hello ClassicCMP`s
I`am resorating an TU56 dual drive. It is clean now, i repaired the
powersupply, i formated the capacitors and i checked if all modules that
needed are existing.
My question before first "smoke test" is done is....
In the engeneering drawings "Module Utilization" are shown special places
for each module. In my drive the Modules on different places then in the
drawing.
Is the backplane a real bussystem or got i use the ports shown in drawings?
Marco
P.S.: Is it allowed to send pictures as attatchment to the list? Or wants
the moderator killing me when i do?
12:16 a.m.
On Fri, May 16, 2014 at 08:42:57AM +0200, Marco Rauhut wrote:
P.S.: Is it allowed to send pictures as attatchment to
the list? Or
wants the moderator killing me when i do?
I think attachments are removed before sending to list members. It's
best to put the picture on a web server or other image hosting service.
/P
7:10 a.m.
On May 16, 2014, at 2:42 AM, Marco Rauhut <marco at familie-rauhut.eu> wrote:
Hello ClassicCMP`s
I`am resorating an TU56 dual drive. It is clean now, i repaired the powersupply, i
formated the capacitors and i checked if all modules that needed are existing.
My question before first "smoke test" is done is....
In the engeneering drawings "Module Utilization" are shown special places for
each module. In my drive the Modules on different places then in the drawing.
Is the backplane a real bussystem or got i use the ports shown in drawings?
The ?backplane? is the wiring between the modules. It?s the equivalent of the wires on a
printed circuit board interconnecting the chips ? with the modules as ?chip? and the wire
wrap connections in place of etched wires. Moving modules around is like switching chips
around a PCB ? in general, you can?t do that. So you need to find the correct placement
for the backplane you have. Perhaps the drawings show the backplane wiring explicitly.
If not, then it should be implied by which signal goes from one module to another. You
may need to pick some signals on the drawings and trace them on the backplane (follow the
wire from one connector to the other) to verify that your current module placement is
correct.
paul
10:45 a.m.
Thank you all for quick answers!
For better understanding. I want to connect the TU56 to my PDP8/E with a
TD8-E controller.
In the transport maintenence manual i found that the G742 is the
Positive Logic Jumper Card. I think is for a positiv control bus, and
the M531 is used for the negativ logic controller. I have the G742.
@Pontus: Thanks for info. I will do so.
Marco
Am 16.05.2014 16:10, schrieb Paul Koning:
On May 16, 2014, at 2:42 AM, Marco Rauhut <marco at
familie-rauhut.eu> wrote:
Hello ClassicCMP`s
I`am resorating an TU56 dual drive. It is clean now, i repaired the powersupply, i
formated the capacitors and i checked if all modules that needed are existing.
My question before first "smoke test" is done is....
In the engeneering drawings "Module Utilization" are shown special places for
each module. In my drive the Modules on different places then in the drawing.
Is the backplane a real bussystem or got i use the ports shown in drawings?
The
?backplane? is the wiring between the modules. It?s the equivalent of the wires on a
printed circuit board interconnecting the chips ? with the modules as ?chip? and the wire
wrap connections in place of etched wires. Moving modules around is like switching chips
around a PCB ? in general, you can?t do that. So you need to find the correct placement
for the backplane you have. Perhaps the drawings show the backplane wiring explicitly.
If not, then it should be implied by which signal goes from one module to another. You
may need to pick some signals on the drawings and trace them on the backplane (follow the
wire from one connector to the other) to verify that your current module placement is
correct.
paul
10:50 a.m.
Marco,
One thing to notice is the order of the cards in the module utilization
chart is reversed from your view of the cards. It is in backplane view
order. So right to left becomes left to right.
Also some cards will be missing. The read/write amps are typically in the
controller.
The two extender cards are crucial as they aren't true extenders. They
also act as jumper cards.
Marc
On Fri, May 16, 2014 at 7:10 AM, Paul Koning <paulkoning at comcast.net> wrote:
On May 16, 2014, at 2:42 AM, Marco Rauhut <marco at familie-rauhut.eu> wrote:
Hello ClassicCMP`s
I`am resorating an TU56 dual drive. It is clean now, i repaired the
powersupply, i
formated the capacitors and i checked if all modules that
needed are existing.
My question before first "smoke test"
is done is....
In the engeneering drawings "Module Utilization" are shown special
places for each module. In my drive the Modules on different places then in
the drawing.
Is the backplane a real bussystem or got i use
the ports shown in
drawings?
The ?backplane? is the wiring between the modules. It?s the equivalent of
the wires on a printed circuit board interconnecting the chips ? with the
modules as ?chip? and the wire wrap connections in place of etched wires.
Moving modules around is like switching chips around a PCB ? in general,
you can?t do that. So you need to find the correct placement for the
backplane you have. Perhaps the drawings show the backplane wiring
explicitly. If not, then it should be implied by which signal goes from
one module to another. You may need to pick some signals on the drawings
and trace them on the backplane (follow the wire from one connector to the
other) to verify that your current module placement is correct.
paul
1:33 p.m.
In the engeneering drawings "Module
Utilization" are shown special
places for each module. In my drive the Modules on different places then
in the drawing.
Is the backplane a real bussystem or got i use the ports shown in drawings?
The T56 is most definitely not a bused backplane, the modules have to be
in the right slots.
I think exacltly which modules you need depeends on the controlleryou are
uisng it with. So you might need ot check that.
And DEC often drew the modual utilisation diagram looking a the _wiring_
side of the backpl;ane, not at the modules. It's a mirror image of what
you might expect.
-tony
17 May
17 May
9:38 a.m.
The tip with the look on the wiering of the backplane bring "light" into
the darknes.
Now the most Modules in right placees....
Only two module places left for confirmation.
Thanks to all so much!
Am 16.05.2014 22:33, schrieb Tony Duell:
In the
engeneering drawings "Module Utilization" are shown special
places for each module. In my drive the Modules on different places then
in the drawing.
Is the backplane a real bussystem or got i use the ports shown in drawings?
The T56 is most definitely not a bused backplane, the modules have to be
in the right slots.
I think exacltly which modules you need depeends on the controlleryou are
uisng it with. So you might need ot check that.
And DEC often drew the modual utilisation diagram looking a the _wiring_
side of the backpl;ane, not at the modules. It's a mirror image of what
you might expect.
-tony
3876
days inactive
3877
days old
7 comments
6 participants
participants (6)
-
ard＠p850ug1.demon.co.uk -
cramcram＠gmail.com -
marco＠familie-rauhut.eu -
paulkoning＠comcast.net -
pontus＠Update.UU.SE -
useddec＠gmail.com