18 Aug
2016
18 Aug
'16
1:02 p.m.
From: Mattis Lind
> To start with, there's this image:
>
> http://homepages.inf.ed.ac.uk/gdmr/Historical/Photos/1980.08-PDP1540.jpg
>
> That's clearly an FP15 on the lower left, and I have identified the
> center one as a TC15, but what are the other two?
OK, I have identified the one on the far right as a VT15. (Crappy image from
DEC documentation added to the page - can someone provide a better one? I've
looked online but the ones I've found are either at a steep angle, or have
a corner missing, or something.)
(And I'm still hoping for an RK08 or RF11 image! ;-)
The other one seems to be the same as this one:
http://www.hal1.se/Rolfs_web/Rolfs_images/1975_1/pages/7503%2003.htm
The panel to the left is RF15 and the right is TC15. But what is the
middle one?
which is in quite a few PDP-15 images, but still un-identified.
It seems to be always near the CPU, so perhaps it's a panel for the memory
management, or something like that? I've looked through some of the manuals
on BitSavers, and I've yet to turn it up, although the block diagram on page
2-3 of the PDP-15 Installation Manual shows an 'indicator [panel]' (no
further info on it, alas) in that location, which is probably it.
There aren't that many devices in that system, so there are only a few
possibilities: BA15 (paper tape controller), DW15A (bus converter), KE15
(extended arithmetic), MM15-A and MK15-A (memory). It might also be a BD15,
whatever that might be (seems to include a D/A, from what little I can find
on it online), since that was listed as having an insert for it.
Noel
18 Aug
18 Aug
4:57 p.m.
On 8/18/16 10:02 AM, Noel Chiappa wrote:
OK, I have identified the one on the far right as a
VT15. (Crappy image from
DEC documentation added to the page - can someone provide a better one?
we have one
http://www.computerhistory.org/collections/catalog/102691234
i'll request access to it to shoot the panel
4:58 p.m.
oh.. there's a cool picture of a PDP-15 here:
http://www.chilton-computing.org.uk/gallery/ral/orig/r12588.jpg
On 8/18/16 1:57 PM, Al Kossow wrote:
On 8/18/16 10:02 AM, Noel Chiappa wrote:
OK, I have identified the one on the far right as
a VT15. (Crappy image from
DEC documentation added to the page - can someone provide a better one?
we have one
http://www.computerhistory.org/collections/catalog/102691234
i'll request access to it to shoot the panel
6:14 p.m.
On Fri, Aug 19, 2016 at 8:57 AM, Al Kossow <aek at bitsavers.org> wrote:
On 8/18/16 10:02 AM, Noel Chiappa wrote:
It's an 'internal' metal panel rather than a classic cabinet top panel
but the lower indicator panel in that image is the TC59 magtape
controller. I have one too:
http://www.corestore.org/15-1.htm
Mike
http://www.corestore.org
'No greater love hath a man than he lay down his life for his brother.
Not for millions, not for glory, not for fame.
For one person, in the dark, where no one will ever know or see.'
OK, I have identified the one on the far right as
a VT15. (Crappy image from
DEC documentation added to the page - can someone provide a better one?
we have one
http://www.computerhistory.org/collections/catalog/102691234
6:35 p.m.
On Fri, Aug 19, 2016 at 5:02 AM, Noel Chiappa <jnc at mercury.lcs.mit.edu> wrote:
> From: Mattis Lind
The other one seems to be the same as this one:
I'm reasonably sure that's connected with the original PC15 high-speed
paper tape controller. On the XVM systems I have the paper tape
function is integrated in the BA15 Peripheral Expander (a small
collection of boards which lives at the bottom of the CPU rack) and
which doesn't have any indicator panel. I'm not aware of any memory
indicator panels associated with any pdp-15 configuration but I could
be wrong!
Oh and there's a better pic of the RF15/RF09 indicator panel in this
manual: http://bitsavers.trailing-edge.com/pdf/dec/pdp9/DEC-09-H9ZA-D_RF09_Jul70.pdf
Mike
http://www.corestore.org
'No greater love hath a man than he lay down his life for his brother.
Not for millions, not for glory, not for fame.
For one person, in the dark, where no one will ever know or see.'
http://www.hal1.se/Rolfs_web/Rolfs_images/1975_1/pages/7503%2003.htm
The panel to the left is RF15 and the right is TC15. But what is the
middle one?
which is in quite a few PDP-15 images, but still un-identified.
It seems to be always near the CPU, so perhaps it's a panel for the memory
management, or something like that? I've looked through some of the manuals
on BitSavers, and I've yet to turn it up, although the block diagram on page
2-3 of the PDP-15 Installation Manual shows an 'indicator [panel]' (no
further info on it, alas) in that location, which is probably it.
There aren't that many devices in that system, so there are only a few
possibilities: BA15 (paper tape controller), DW15A (bus converter), KE15
(extended arithmetic), MM15-A and MK15-A (memory). It might also be a BD15,
whatever that might be (seems to include a D/A, from what little I can find
on it online), since that was listed as having an insert for it.
Noel 
19 Aug
19 Aug
3:13 a.m.
Noel said:
(seems to include a D/A, from what little I can find
on it online)
I have that A/D unit ('A-D CONVERTER' as it says on the panel) from when I
collected the Fox 2/10. It's complete as far as I can tell. I can take some
photos of it, if any interest.
Also a belated thanks to yourself and others for the 11/15 vs 11/20 differences,
very interesting.
Steve.
6:30 a.m.
2016-08-19 9:13 GMT+02:00 <steven at malikoff.com>:
Noel said:
Here is a picture of our AF01 frontpanel: http://i.imgur.com/iyvZsr5.png.
The AA01 D/A converter has no frontpanel like the AF01.
(seems to include a D/A, from what little I can
find
on it online)
I have that A/D unit ('A-D CONVERTER' as it says on the panel) from when I
collected the Fox 2/10. It's complete as far as I can tell. I can take some
photos of it, if any interest.
Also a belated thanks to yourself and others for the 11/15 vs 11/20
differences,
very interesting.
Steve.
/Mattis
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participants (5)
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aek＠bitsavers.org -
jnc＠mercury.lcs.mit.edu -
mattislind＠gmail.com -
steven＠malikoff.com -
tmfdmike＠gmail.com