Psion Series 3a

256Kb, 512Kb, 1mb and 2mb models


Date Released:

1993 256 & 512 Models

1995 1mb & 2mb Models

Original Price: £269 (256kb) - 399.99 (2mb)
CPU: 7.68 MHz NEC V30H (80C86)
RAM: 256kb - 2 Mb
ROM: 1mb

Power: Two AA or 9v , 150 mA mains adapter, one Lithium battery

Display: 480 x 160 px LCD

Other: 2 ssd slots

Software: Diary, Word, Agenda, etc.
Weight: 275 grams with batteries

Dimension: 165mm x 85mm x 23mm

Communication: Serial 19200 bps
Sound: Membrane speaker, built in Microphone, 12-bit sound recording


Purple Software produced a Cyclone Disk Drive for the Psion that was designed for mobile use with both the 3a and 3c.

The 3.5 inch floppy diskette drive that provides a flexible, low-cost solution to off-line storage and back-up on Psion platforms.
Durable housing ideal for mobile use.
Uses standard, low-cost 720K and 1.44Mb PC floppy diskettes.
Transfer diskettes between your Cyclone drive and your PC.
Appears simply as drive C to all your Psion applications.
Works with all software that adheres to Psion standards.
Back up your files speedily and at a fraction of the cost compared with Flash SSDs.
Save money by buying your Psion applications on floppy diskette.
Includes the renowned File Manager software.
Compatible with the Psion Series 3a/3c/3mx, Workabout & Siena.
Powered by mains or batteries (battery pack is an optional extra).
Dimensions: 240mm long, 105mm wide, 30mm high.
Weight: 800g (without batteries).

Download Psiwin 1.1
Compatible with

* IBM PC 386
* 4MB of RAM
* 7MB of Hard Drive space
* Free Serial/COM port on the PC

Disc 1
Disc 2
Disc 3
Single File
Psi registry cleaner


Useful Links

This link is very detailed on how to convert a 256k Psion 3a to 512k. It covers disassembling, removing the mainboard, the chips needed, and some hints on easiest methods.

Dismantling the Psion 3a

Psion Surgery

David J.C. MacKay pages

This is a first plus a little bit of an attempt at putting Psion's Programmer's Reference onto the Web.

Psion Programming Reference Manual

Ftp Archives

Psion Archive

Psion series 3 frequently asked questions

Search through these Ftp sites

Others useful links

David Brown Psion 3 freeware pages

Martin Stut Psion 3a Page

Psion Development
Daniel Pfund's PSION World
Alan Richey Psion Software
Psion public domain and shareware from Steve Godfrey
Ben's Psion Series 3a Home Page

For more information contact me and I will try to assist you

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