Telstar, Videotex and Communications

Telstar Viewdata Client
To experience Telstar properly it needs to be accessed by a microcomputer or Viewdata Terminal from the 1980s. However, for a simple way to get started, the Telstar Viewdata Client can be used.
The Telstar Viewdata client is available for Mac, Linux and Windows and has no dependencies, It allows access to viewdata systems through either a direct TCP/IP connection or via a Modem connected to a local serial port.
Gemini 80-Bus

Gemini 80-Bus Resource
This page is designed to bring all of my Gemini software, firmware and documentation into a single resource. I have also included documents that are related to the Gemini system.
Arduino/Raspberry Pi

Removing the Bounce from a Rotary Encoder in C++
This code was developed from an idea by Oleg Mazurov and is presented here as a complete class that can be added as a tab in an Arduino sketch.
Altair, Apple II, BBC Microcomputer and all things CP/M

Experiencing the Altair 8800
For anyone with an interest in early 8 bit computers, even for those of us in the UK, it is impossible not to recognise the importance of the Altair 8800. In this article I attempt to share my experiences with this awesome machine.