Jaap's Psion II Page

The Psion Organiser Series II

This is a collection of various documents and programs for the Psion Organiser series II, and its predecessor the Series 1. Some of these were originally written for and available on the Psion Organiser II Homepage. To check for recent updates, see the Change Log page. (Orginal URL: www.jaapsch.net/psion/index.htm)

If you have comments, have interesting Psion II items not featured here, or if you want to buy an Organiser or some datapaks, you can contact me (Jaap Scherphuis) at psion a t jaapsch d o t net.

History of the Psion Organiser: https://en.wikipedia.org/wiki/Psion_Organiser
History of the compagny Psion: https://en.wikipedia.org/wiki/Psion_(company)

Picture Galleries

Picture Galleries

User Manuals

User Manuals

- Software Pack Manuals

Most of these packs can be downloaded from the Software Pack Images page, and then burned onto a pack using the Organiser Developer kit, available from the Software by others page.



- Software for Psion or PC

- Software Packs and ROM Image files

Online Tools

Psion Emulator
  • Jape - Javascript Psion Emulator
    Emulates almost any model of Psion II, with packs and snapshot functionality.
  • OPK File Editor
    Allows you to create or edit OPK files, which can be used with the Jape emulator or copied onto a real pack.
  • Psion LZ Password Cracker
    Tools for cracking the simple password system used on the Psion II LZ/LZ64.
  • UDG Creator
    A simple tool for creating user-defined graphics for use in a Psion II program.

Technical Documents

Technical Documents

- Documents by Psion

- Other Documents

Machine Code Programming

Machine Code Programming

- Tutorial

  • Numbers and Number Systems.
    An explanation of number systems including binary, hexadecimal and binary coded decimal.
  • Psion Machine Code Tutorial
    Five part tutorial explaining in great depth how to program the Psion Organiser II using machine code.
  • Flags and Arithmetic.
    An explanation of flags and how they are used in arithmetic. Also a brief run-down of all other machine code instructions.
  • Storing Machine Code.
    Shows places where machine code can be stored, and how to do so.

- Reference

Other Documents

User Catalog Autumn 1988

- Psion News

This was Psion's promotional magazine that was issued about three times a year.

- Flying with Flightmaster

This was a news letter for the users of Flightmaster software which appeared 3 or 4 times per year starting in October 1989. This Flightmaster software came on two 128K datapacks, and pack images are available on the Software Pack Images page.

Psion Organiser Series 1

Psion Organiser Series 1
  • UK Patent Application GB 2 161 300 A (348 KB pdf)
    Patent for the series 1 Psion Organiser from 1984. Lapsed in 2004. The UK Registered designs 1019736 and 1019737 are of figures 2 and 4 of the patent, depicting the Organiser and the Datapak, respectively.

© Copyright 2013-2020, Jaap Scherphuis. This is a non-commercial site, for educational use only, with the aim to be an archive of Psion Organiser II information and software that might otherwise be abandoned and lost. No copyright infringement is intended. If you are the copyright holder of anything reproduced on this site, and object to its presence here, please contact me (Jaap Scherphuis) at .