psion – Room 7609

Out and about with a laptop from 1989

I took my old (1989 vintage) laptop out for a coffee to send some tweets & emails 🙂

Using USB to power old mobile/handheld computers

An app written in 1996 to simulate making voice calls from a Psion Series 3a.

Poking around in the old Psion SIBO SDK debugger – which looks like it’s based heavily on the MC’s GUI…

Re-purposing an old Psion MC400 laptop mechanical keyboard from 1989 to work with USB via a Teensy LC (Arduino compatible) microcontroller

Emulating a Psion MC400 over 30 years later – a 1989 80C86 based laptop being brought back to life in MAME.

A look at what state-of-the-art mobile text processing for journalists was like in the mid 1990s – the Psion MC400 EROS system.

I read an online post about creating an “MC400 emulator”. That got me thinking about the ROM, and the 28F010 flash chips that realise it…

A summary of all the things that are right with my 1991 Psion MC400 laptop, “online” via an attached Raspberry Pi 3B+ and wifi…

As of July 2021 Linux has been around for 30 years. For almost all of that time I’ve been installing Linux on just about anything I possibly can….