ping Quadibloc
Mike Ross
- a normal pdp-15 console and an XVM console. There are indeed a couple of
slight difference in the legend for a couple of lights:
http://www.corestore.org/15vsXVMcons.jpg
There are a very few pdp-15s floating around, but I have the only two XVMs that
are still known to exist, I believe - and they're both going to be refurbished
and got working over the next few months, Eris willing!
What I'd really like to get hold of is a TC15 DECtape controller...
Mike
--
http://www.corestore.org
'As I walk along these shores
I am the history within'
Quadibloc
> I was looking at your front panel website; you might be interested in this photo
> - a normal pdp-15 console and an XVM console. There are indeed a couple of
> slight difference in the legend for a couple of lights:
>
> http://www.corestore.org/15vsXVMcons.jpg
>
> There are a very few pdp-15s floating around, but I have the only two XVMs that
> are still known to exist, I believe - and they're both going to be refurbished
> and got working over the next few months, Eris willing!
That is a beautiful photograph.
Now I wonder how many PDP-9/S systems still exist... if any!
John Savard
Mike Ross
<ding> I don't believe there was any such beast as the 9/S. There was the
original pdp-9, with the 'classic' front panel, of which I believe there are
half a dozen or so surviving. Then there was the pdp-9/L, which had a front
panel identical to the pdp-15 (but with orange legend and switches), but was
architecturally and electronically a low-end pdp-9. It was a bit of a flop, not
many were sold, and I am only aware of two survivors.
Quadibloc
> Then there was the pdp-9/L, which had a front
> panel identical to the pdp-15 (but with orange legend and switches), but was
> architecturally and electronically a low-end pdp-9. It was a bit of a flop, not
> many were sold, and I am only aware of two survivors.
I meant the 9/L, sorry about that. (I managed to find on one person's
photo collection, a photo showing its red and orange color scheme.)
The front panel was stylistically similar to that of the PDP-15 and
the PDP-12, but there were more significant differences in legends and
switch layout between it and the 15; much more so than between the
PDP-15 and the XVM.
One thing I've been trying to hunt up information on is the front
panel of the PDP-15 prototype that appeared in some of the advertising
literature. There were some slight differences between it and actual
PDP-15 models, as can be seen in the photo, but I'm not able to
determine what the label is on the light in the upper left corner.
The basic difference is that the three "Time States" lights are
omitted, and everything else, including the DCH/Active light, is
shifted to the right.
John Savard
Mike Ross
On Thu, 01 Oct 2009 12:58:46 -0400, Mike Ross <mi...@corestore.org> wrote:
<snip>
>There are a very few pdp-15s floating around, but I have the only two XVMs that
>are still known to exist, I believe - and they're both going to be refurbished
>and got working over the next few months, Eris willing!
It turns out mine aren't the only XVMs - Mark Hyde has a couple of XVMs in
Syracuse.
>What I'd really like to get hold of is a TC15 DECtape controller...
Still looking...!