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Welcome to VAXBARN, Camiel Vanderhoeven's computer collection, located in a 200-year old farmhouse in the tiny village of Netterden, in the east of the Netherlands, on the border with Germany.

There are always various projects that I'm working on that are related to my collection of old(er) computers, and so far, the information about these different projects has always been kept in lots of different places. Since there are a few people occasionally interested in what I'm doing, I've decided to create this website to both document my collection and to have a place to put information about all these different projects in one single place.

Feel free to browse the Collection, or check out some of the projects I'm working on in the menu on the right side of this page.

For any questions or comments, or if you have something you'd like to contribute to the collection, feel free to drop me a note at This email address is being protected from spambots. You need JavaScript enabled to view it..

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We were contacted on behalf of the Technical University of Aachen about the possibility of rescuing a Siemens Teleperm process control system; and not just any Siemens Teleperm, but the 10,000th process control system Siemens ever produced.

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Even with all the odd restrictions and precautions that 2020 has forced on us, the occasional visitor bearing gifts still manages to find the museum. I'd like to highlight three of these visits and a pickup we made here.

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The collection has a fairly large number of videotapes related to Convex. We've made a number of these available through Youtube. Here, you can find an overview of all video's in the collection.

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So, here's a bit of a mystery I'd like to share with you: I recently;y received this mystery device from Germany, and I have no idea yet what it is.

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These graphs show the temperature and humidity as measured in two different places in the barn over the past 24 hours. Refreshed every 10 minutes (you may need to refresh your browser cache).

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This video showcases the Ardent Titan graphics supercomputer.

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About a month ago, a French colleague of mine drew my attention to a french website, the title of which translates to "Private Cossor must be saved". A Cossor DIDS-400 terminal of the mid-1960's was going to end up in the trash unless someone stepped up to rescue it.

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Part of the Vaxbarn collection is what could very well be the largest collection of Convex supercomputers in the world.

The Convex adventure started in 2016 with an eBay advertisement, and since then the collection has seen the addition of 9 Convex supercomputers, spanning three generations of machines.

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My name is Camiel Vanderhoeven, born in Zoelen, the Netherlands in 1977 to a Belgian father and a Dutch mother. I am married to Martha, and we have three children: Ties (2009), Sipke (2012), and Rosalie (2016).

I work as a kernel engineer at VMS Software, Inc., and I am one of the architects for the port of the OpenVMS operating system to the x86 processor architecture.

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