Informations of the Allschwil HP-Meeting 2022 on October 28/29th:


We started the meeting in 2006 in my living room with about 12 people, but the very next meeting we had to move to my school building because the number of participants would have been too big for my flat.
In 2018, the meeting infrastructure became too small again and we had to find a new location. Hans-Peter Wiederkehr has also been co-organiser of the meeting since 2018 and deserves my deepest thanks for the work he has done.

Meeting Location: Pfarreiheim Oberwil
Kummelenstrasse 3
4104 Oberwil

Mobile: +41 79 606 35 96 (Matthias)
GPS Coords: N47.51343 E7.55334

Registration form: .



Here is a list of recommended hotels in different price ranges.

  • Schloss Binningen
  • Villa Thomasgarten (Oberwil)
  • B&B Bottmingen
  • B&B Oberwil (500m near meeting location)
  • Hotel Steinenschanze (Basel)
  • The Passage (Basel)
  • Hotel ibis Bahnhof (Basel)
  • Hotel Spalentor (Basel)

    Programm and Schedule

    The full schedule of the two days can be downloaded here.

    Registered participants and presentaions

    The Allschwil HP-Meeting is open to everyone: HP enthusiasts, collectors, inventors, software developers, hardware cracks, nostalgics. We are especially proud that this year we were able to welcome participants from 10 countries from 3 continents. Your journey was long, certainly not cheap, and yet you took the strain upon yourselves: Many thanks to all speakers and participants. Without you, the meeting would not be possible.
    Below you will find all the documents for the individual presentations: the videos and the .pdfs. A big thank you goes to Eric Rechlin, who recorded all the speeches and edited them at home. All data will also be available on the new HHC USB stick, which you can order from Eric.


    Matthias Wehrli Host
    Hans-Peter Wiederkehr Host
    Walter Bonin Presentation WP 43S
    Ángel Martin Presentation Towards a Visual FOCAL VF++
    Sylvain Cote Presentation Advanced HP-IL Communication
    Sylvain Cote Presentation HP41 MAXX Announcement
    Bernhard Emese Presentation Inside the HP-19C
    Meindert Kuipers Presentation Patching the Printer ROM for serial printing on the HP-41CL
    Christoph Giesselink Presentation V41 Emulator progress since 2018
    Jaco Mostert Presentation C43-Project
    Pascal Dagornet Presentation Raspberry PI as virtual drive
    Jozef Ongena Presentation repair of a 1971 Japanese calculator containing undocumented integrated circuits
    Charles McCord Presentation HP92 Bobcat Prototype
    Charles McCord Presentation HP75 Kangaroo Development Prototype
    Charles McCord Presentation Inside HP's Pioneer Calculators: The Sacajawae CI
    Charles McCord Presentation Single Chip Serie 10
    Charles McCord Presentation Voyager, what if
    Martin Pedersen Attender  
    Eric Rechlin Attender recorded all presentations on video
    Bruce Horrocks Attender
    Giancarlo Cotrufo Attender
    Martin Lorang Attender
    Dani Rau Attender
    Eric van der Wateren Attender
    Robbert Jan van Meenen Attender
    Craig Bladow Attender
    Torsten Wierczoch Attender

    Side programm

    The side programm for the Allschwil Meeting started on Friday at 10:00am at the Town Hall in Basel. Karin Rey (historian of Basel) guided 7 women through the inner city. The guided tour finished at 4 pm.
    The guided tour was in english and free of charge for the participants. As the Autumn Fair started at 12 noon on Saturday, Karin gave tips for Saturday for the visit to the Autumn Fair.

    Matthias & Hans-Peter

    november, 17th