Reviving the PDP-11: A Journey Through Retro Computing with Dave Plummer

In the world of retro computing, few endeavors capture the imagination quite like resurrecting a piece of history from the ashes of obsolescence. This is precisely what former Microsoft engineer Dave Plummer has achieved with his remarkable project of rebuilding a PDP-11 minicomputer using spare parts he had on hand. The PDP-11, a legendary minicomputer produced by Digital Equipment Corporation (DEC) from 1970 until 1990, holds a special place in the hearts of many IT professionals and computing enthusiasts. Plummer’s journey, chronicled on his YouTube channel ‘Dave’s Garage,’ offers a fascinating glimpse into the intricacies of vintage computing hardware and the passion that drives individuals to preserve technological history.

Dave Plummer is no stranger to the tech world. As the programmer behind the iconic Windows Task Manager and the beloved Space Cadet Pinball game, Plummer’s contributions to the evolution of personal computing are well-documented. However, his recent foray into YouTube has allowed him to share his deep knowledge and enthusiasm for retro technology with a broader audience. In one of his most captivating videos, Plummer takes viewers through the meticulous process of reconstructing a PDP-11, a task that required not only technical expertise but also a profound appreciation for the history and significance of the machine.

The journey began when Plummer stumbled upon a tub of old computer components. Among the jumble of parts, he found the essential elements needed to breathe new life into a PDP-11. The build included a backplane with slots for a CPU card, two RAM cards, and a QBONE card. The QBONE card, in particular, is a noteworthy addition, as it exemplifies the concept of extending original hardware rather than relying solely on emulation. This approach allows for the emulation of components as they fail or become difficult to obtain, ensuring the longevity and functionality of the restored machine.

One of the most intriguing aspects of Plummer’s project is his decision to use a Linux board as a boot device. While some purists might argue that this detracts from the authenticity of the build, Plummer’s pragmatic approach highlights the challenges faced by those attempting to revive vintage technology. The use of modern components where necessary does not diminish the achievement but rather underscores the ingenuity required to keep these machines operational in the 21st century. Through his efforts, Plummer was able to interact with the PDP-11 much as one would have in its heyday, providing a tangible connection to the past.

The PDP-11 itself is a marvel of engineering and design. Its long production run and widespread adoption make it one of the most successful minicomputers ever produced. For IT professionals of a certain age, encountering a PDP-11 during their careers was almost a rite of passage. These machines were ubiquitous in various industries, from academic institutions to research laboratories and beyond. The nostalgia associated with the PDP-11 is palpable, and Plummer’s project taps into this sentiment, offering a poignant reminder of the technological advancements that have shaped our world.

For those who share Plummer’s passion for retro technology, there are several ways to bring a touch of PDP-11 goodness into their lives. In 2018, a replica kit for a 6:10 scale version of the PDP-11 was made available by Obsolescence Guaranteed, allowing enthusiasts to build their own miniature version of this iconic machine. Such kits provide a hands-on experience and a deeper understanding of the hardware that powered early computing innovations. Additionally, various vintage items related to the PDP-11 and other classic technologies can be found for purchase, further fueling the desire to preserve and celebrate the history of computing.

Plummer’s build was identified as a PDP-11/23 plus model, featuring an M8189 CPU and a Qbus backplane, dating it to the early 1980s. This particular configuration adds another layer of historical significance to the project, as it represents a specific era in the evolution of the PDP-11 series. The attention to detail in Plummer’s reconstruction, combined with his ability to explain each step of the process, makes for a compelling and educational viewing experience. His videos not only showcase the technical aspects of the build but also provide valuable insights into the broader context of computing history.

Throughout his video series, Plummer shares personal anecdotes and behind-the-scenes stories from his time at Microsoft and other companies. These narratives offer a unique perspective on the development of computer hardware and software, shedding light on the challenges and triumphs that have defined the industry. Plummer’s storytelling ability, coupled with his technical expertise, creates an engaging and informative experience for viewers. His passion for preserving and showcasing the history of computing is evident in every project he undertakes, making his channel a treasure trove for tech enthusiasts and nostalgia seekers alike.

One of the most captivating elements of Plummer’s videos is his willingness to delve into the minutiae of old hardware. He is not afraid to break down complex processes and explain the significance of each component, providing viewers with a deeper understanding of how these machines functioned. This level of detail is particularly valuable for those who may not have had the opportunity to work with vintage technology firsthand. By demystifying the inner workings of the PDP-11 and other classic computers, Plummer helps to bridge the gap between past and present, fostering a greater appreciation for the technological advancements that have shaped our world.

In addition to his work on the PDP-11, Plummer has shared numerous other projects and insights on his YouTube channel. From recounting the story of how he almost lost his job at Microsoft for adding zip support to Windows, to discussing the code he wrote for the ‘format drive’ dialog box 30 years ago, Plummer’s videos are a goldmine of information and entertainment. His extensive collection of old hardware and his dedication to tinkering with it to bring it back to life further demonstrate his commitment to preserving the history of computing. Each video serves as a testament to his love for technology and his desire to share that passion with others.

Dave Plummer’s impact on the world of computing extends far beyond his contributions to Microsoft products. His work on classic technologies and his efforts to educate and inspire through his YouTube channel have left a lasting legacy. For those who grew up with the PDP-11 and other vintage machines, Plummer’s projects offer a nostalgic trip down memory lane. For younger generations, his videos provide a valuable glimpse into the history of computing, highlighting the innovations and milestones that have paved the way for modern technology. Plummer’s dedication to preserving and celebrating the past ensures that the legacy of these pioneering machines will continue to be appreciated for years to come.

As the world of technology continues to evolve at a rapid pace, it is essential to remember and honor the foundations upon which it was built. Dave Plummer’s work serves as a reminder of the ingenuity and creativity that have driven the field of computing forward. By resurrecting the PDP-11 and sharing his journey with the world, Plummer has created a bridge between the past and the present, allowing us to appreciate the progress that has been made while also acknowledging the contributions of those who came before us. His efforts to preserve and showcase the history of computing are not only commendable but also vital in ensuring that the stories of these groundbreaking machines are not forgotten.

In conclusion, Dave Plummer’s reconstruction of the PDP-11 is a remarkable achievement that highlights the importance of preserving technological history. Through his YouTube channel, Plummer offers viewers an in-depth look at the process of reviving vintage hardware, providing valuable insights and fostering a greater appreciation for the innovations that have shaped the world of computing. His passion for retro technology and his dedication to sharing his knowledge make his videos a must-watch for anyone interested in the evolution of technology. As we continue to forge ahead into the future, it is projects like Plummer’s that remind us of the rich and storied past that has brought us to where we are today.