Poking around in the old Psion SIBO SDK debugger – which looks like it’s based heavily on the MC’s GUI…
Category Archives: tech
Psion MC400 ROM dump & emulation development
Emulating a Psion MC400 over 30 years later – a 1989 80C86 based laptop being brought back to life in MAME.
Repurposing an old Psion MC400 laptop keyboard with Teensyduino & USB
Re-purposing an old Psion MC400 laptop mechanical keyboard from 1989 to work with USB via a Teensy LC (Arduino compatible) microcontroller
Grafana, Influxdb & DS18B20 based home temperature monitoring with Raspberry Pi
Update on the Raspberry Pi/Grafana/Influxdb/DS18B20 temperature monitoring network I put together 2 years ago…
One of The Many Promises of 5G – Accurate Time Transfer
One of the many promises of 5G is accurate time-transfer. I spent a couple of days travelling around the North West of England testing exactly how accurate available time transfer was from commercially deployed 5G installations.
10 years of Raspberry Pi
So the Raspberry Pi has been around for 10 years… everyone’s favourite credit-card-sized computer does just about everything
The Psion MC400 EROS – Tandy TRS-80 model 200 replacement?
A look at what state-of-the-art mobile text processing for journalists was like in the mid 1990s – the Psion MC400 EROS system.
A SIP trip down memory lane… back to Asterisk PBX & VOIP
A long time ago I built a VOIP PBX. I’ve been wanting to build & use another for a long time and finally got round to it with a £10 Cisco phone and £14 USB dongle…
Borked Signage
In honour of the regular El Reg feature which looks like it’s coming to an end… here’s my tiny collection of borked signage:
Emulating the Psion MC400
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…
Room 7609 