pdp

The PDP-11 is a series of 16-bit minicomputers sold by Digital Equipment Corporation (DEC) from 1970 into the 1990s, one of a succession of products in the PDP series. In total, around 600,000 PDP-11s of all models were sold, making it one of DEC's most successful product lines. The PDP-11 is considered by some experts to be the most popular minicomputer ever.
The PDP-11 included a number of innovative features in its instruction set and additional general-purpose registers that made it much easier to program than earlier models in the series. Additionally, the innovative Unibus system allowed external devices to be easily interfaced to the system using direct memory access, opening the system to a wide variety of peripherals. The PDP-11 replaced the PDP-8 in many real-time applications, although both product lines lived in parallel for more than 10 years. But the ease of programming of the PDP-11 made it very popular for general purpose computing uses as well.
The design of the PDP-11 inspired the design of late-1970s microprocessors including the Intel x86 and the Motorola 68000. Design features of PDP-11 operating systems, as well as other operating systems from Digital Equipment, influenced the design of other operating systems such as CP/M and hence also MS-DOS. The first officially named version of Unix ran on the PDP-11/20 in 1970. It is commonly stated that the C programming language took advantage of several low-level PDP-11–dependent programming features, albeit not originally by design.
An effort to expand the PDP-11 from 16 to 32-bit addressing led to the VAX-11 design, which took part of its name from the PDP-11.

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  1. SplMonk

    Pioneer PDP-507XD Power button

    I have a Pioneer PDP-507XD (14 years old I know) sadly today the power button has stopped working well it works but won’t stay on. If you press it and hold it in the TV will turn on and if you wedge it in with some paper it will stay on but it’s clear the power button has had it. It seems...
  2. mikeeb123

    Pioneer PDP-428XD can’t connect to Sonos beam

    Hi, I’ve just purchased a Sonos beam to add to my pioneer kuro pdp-428xd but it appears that the ‘optical out’ on the TV only sends out sounds when using the TV internal tuner, and not if you have Virgin and/or Fire stick attached via HDMI (which I have)? Does anyone know of a work around...
  3. tommtomm

    Replacement for Pioneer Kuro PDP - LX 5090

    Hi, what replacement would you recommend for the Pioneer Kuro PDP - LX 5090? It is important to be able to turn off the soap opera effect. Thank you
  4. Nightfa11

    FREE Pioneer PDP - LX 5090 KURO

    This isn't my TV, I simply noticed it was being given away for FREE on Freecycle and thought someone here might be happy to have it even though it needs a repair. This TV was over £2000 new and received rave reviews. Be a shame to see it scrapped. I've no idea what that repair involves, but...
  5. DJ Dave

    Sonos Beam With Pioneer PDP 436XDE

    Hi all I am having the same issue that I can see so many people are having with non ARC ports on their TVs. There is no sound from my Sonos Beam because the TV tuner box will not put out any signal via the optical out because HDMI is connected from the Sky Box. Because I have no Arc, the Beam...
  6. G

    HELP with old Pioneer plasma pdp V402

    Hello everybody, My Pioneer pdp v402 has started to do a strange thing. When i turn it on, i ve a white screen. I can't access to the menu nor change the input. Normaly when i turn it on, i ve a black screen with the "no sync" signal ( when no source connected). I ve not already opened it to...
  7. K

    Question Current equivalent of Pioneer PDP 427XD

    Hi, I have a Pioneer PDP 427XD, that my daughter threw a ball at, at the weekend and it now won't stay switched on. I have contacted my household insurance company, the policy is a new for old policy, the offer they have given me is for a Panasonic TX-43GS352B, I don't think that this is an...
  8. A

    Pioneer PDP 504PE

    Hello, I am looking for a decent sized TV for my garage, part of a den set-up for the kids. The above TV is being advertised locally for £50. I can get one or more scart to hdmi adaptors for little cash, but I'm wondering how the picture would stack up these days? The TV would probably need...
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