PDP-11 Operating Systems

Dave McGuire mcguire at neurotica.com
Fri Mar 11 18:31:11 CST 2011

On 3/11/11 6:46 PM, Brent Hilpert wrote:
>>>>> I extracted a couple of photos from the Fox-2 doc at the
>>>>> archive.computerhistory.org:
>>>>> http://www3.telus.net/~bhilpert/tmp/foxboro/
>>>>> So for PDP-11 experts, could the machine in the photos be a
>>>>> rebadged/OEM
>>>>> PDP-11 ca. 1972 ?
>>>> That looks exactly like a PDP-11/20 front panel.
>>> The switch and light patterns certainly do, but the silk screen around
>>> them looks unique.
>>> http://www.retrotechnology.com/pdp11/front_panel.jpg
>> Yes, a proprietary silk-screened bezel over a standard 11/20 front
>> panel, as has been done with lots of PDP-8 and PDP-11 systems.
> I figured somebody here would recognise it more quickly than if I went
> looking for -11 front panel photos. While many -11s were used in
> embedded systems, I don't think I had seen one where they were actually
> trying to hide the fact by silk-screening new front panels.

   I have a PDP-8/e with another company's custom-silkscreened front 
bezel; it doesn't say DEC or DIGITAL anywhere on it.  Pat Finnegan has 
(I think) a PDP-11/35 with a similarly-custom front bezel.  I don't 
recall if that says DEC or DIGITAL on it but I think it doesn't.


Dave McGuire
Port Charlotte, FL

More information about the cctech mailing list