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Wednesday, March 29, 2023
Latest:
  • The Nascom Experience
  • Installing and Configuring Asterisk 18 (with Softmodem) on Ubuntu 20
  • Building a Standalone Softmodem Enabled PABX
  • The TELSTAR Viewdata System
  • Telstar Viewdata Client
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The TELSTAR Viewdata System
Communications Latest Telstar Videotex 

The TELSTAR Viewdata System

July 20, 2022August 2, 2022 john
ZX81 Controls a Nuclear Power Plant
Latest ZX81 

ZX81 Controls a Nuclear Power Plant

October 11, 2021November 2, 2022 john
Z80 SBC using Tom Szolyga’s SBC-Z80 Board
CP/M Latest Other Workshop 

Z80 SBC using Tom Szolyga’s SBC-Z80 Board

March 11, 2020January 5, 2021 john
Running XBeaver with Docker
80-Bus Docker Featured 

Running XBeaver with Docker

November 1, 2020September 19, 2022 john
Telstar Packet Assembler/Disassembler (PAD)
Communications Featured Videotex 

Telstar Packet Assembler/Disassembler (PAD)

April 30, 2020May 20, 2022 john
A Raspberry Pi based ‘Bramble’ Cluster for Docker Swarm
Cluster Computing Featured Linux Raspbery Pi 

A Raspberry Pi based ‘Bramble’ Cluster for Docker Swarm

December 31, 2019January 5, 2021 john
Gemini System
80-Bus Featured 

The Gemini 80-Bus Saga – Part 1

October 24, 2019October 3, 2022 john

Telstar, Videotex and Communications

Building a Standalone Softmodem Enabled PABX
Asterisk Communications Telstar 

Building a Standalone Softmodem Enabled PABX

July 26, 2022July 31, 2022 john

Inspired by the article ‘Build your own PABX and Modem Emulator’ by HereBeDragons, this project aims to build on top of that work and create an Asterisk (v18) PABX on a Raspberry Pi with two local extensions and two external connections to the Telstar Viewdata system. The idea is that I can connect a Prestel or Minitel terminal or an 1980s computer with modem, to the Telstar viewdata system.

The TELSTAR Viewdata System
Communications Latest Telstar Videotex 

The TELSTAR Viewdata System

July 20, 2022August 2, 2022 john
Telstar Viewdata Client
Communications Telstar Videotex 

Telstar Viewdata Client

June 17, 2022August 2, 2022 john
Using Minitel Terminals with Telstar
Communications Telstar Videotex 

Using Minitel Terminals with Telstar

May 19, 2022May 20, 2022 john
Hosting Frames on Telstar
Communications Telstar Videotex 

Hosting Frames on Telstar

May 16, 2022June 17, 2022 john
Telstar – Troubleshooting
Acorn Communications Telstar Videotex 

Telstar – Troubleshooting

April 4, 2021September 14, 2022 john
Telstar Packet Assembler/Disassembler (PAD)
Communications Featured Videotex 

Telstar Packet Assembler/Disassembler (PAD)

April 30, 2020May 20, 2022 john
Using an Internet Modem For Telstar
Communications Telstar Videotex 

Using an Internet Modem For Telstar

September 30, 2019April 28, 2021 john

Gemini 80-Bus

Gemini 80-Bus Resource
80-Bus 

Gemini 80-Bus Resource

November 30, 2020October 11, 2022 john

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.

Running XBeaver with Docker
80-Bus Docker Featured 

Running XBeaver with Docker

November 1, 2020September 19, 2022 john
The Gemini 80-Bus Saga – Part 2
80-Bus Latest 

The Gemini 80-Bus Saga – Part 2

February 18, 2020August 11, 2021 john
Gemini System
80-Bus Featured 

The Gemini 80-Bus Saga – Part 1

October 24, 2019October 3, 2022 john

Nascom

The Nascom Experience
Nascom 

The Nascom Experience

February 16, 2023February 23, 2023 john

An entertaining look at what it’s like to be owned by a Nascom computer. With special thanks to members of

Altair, Apple II, BBC Microcomputer and all things CP/M

Experiencing the Altair 8800
Altair CP/M Other 

Experiencing the Altair 8800

January 8, 2021September 19, 2022 john

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.

Microchess to Project Chess
Altair Apple II CP/M Other 

Microchess to Project Chess

July 30, 2020January 8, 2021 john
Using MAME to Emulate the Apple II+
Apple II Other 

Using MAME to Emulate the Apple II+

March 30, 2020January 5, 2021 john
Z80 SBC using Tom Szolyga’s SBC-Z80 Board
CP/M Latest Other Workshop 

Z80 SBC using Tom Szolyga’s SBC-Z80 Board

March 11, 2020January 5, 2021 john
Programming the Videx Videoterm with Assembly Language
Apple II Other 

Programming the Videx Videoterm with Assembly Language

July 31, 2018January 5, 2021 john
Patching WordStar for use with a VT-100 Terminal
CP/M Other 

Patching WordStar for use with a VT-100 Terminal

July 5, 2018January 8, 2021 john

Arduino/Raspberry Pi

Removing the Bounce from a Rotary Encoder in C++
Arduino Raspbery Pi 

Removing the Bounce from a Rotary Encoder in C++

September 30, 2020January 8, 2021 john

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.

A Raspberry Pi based Cluster for use with ipyparallel and MPI
Cluster Computing Linux Raspbery Pi 

A Raspberry Pi based Cluster for use with ipyparallel and MPI

December 31, 2019January 25, 2021 john
A Raspberry Pi based ‘Bramble’ Cluster for Docker Swarm
Cluster Computing Featured Linux Raspbery Pi 

A Raspberry Pi based ‘Bramble’ Cluster for Docker Swarm

December 31, 2019January 5, 2021 john
Installing Arch Linux on a Raspberry Pi 3
Archived Linux Raspbery Pi 

Installing Arch Linux on a Raspberry Pi 3

May 30, 2018January 8, 2021 john

Telstar Status:

Line 1: (01756 664433)
Status: OK
Config:
Asterisk Softmodem connecting to Telstar (Currer).

Line 2: (01756 664434)
Status: OK
Config: Asterisk Softmodem connecting to the Telstar vPAD. With access to many Viewdata systems.

Internet 1: (glasstty.com:6502)
Status: OK
Config: TCP endpoint connecting to Telstar (Currer).

Internet 2: (glasstty.com:6503)
Status: OK
Config: TCP endpoint connecting to Telstar (Ellis).

Notes:
Telstar now supports Minitel Terminals on all ports.

Telstar on groups.io


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About

John Newcombe - Software developer with an interest in the development of Genetic Algorithms and Neural Networks. John also has an interest in 8 bit computers and is the developer and maintainer of the Telstar videotex system.

Glass TTY

In the 1970s, character mode terminals e.g., ADM3A, VT100 etc. were considered preferable to the large cumbersome teleprinters. These new all electronic devices with their glass screens were often referred to as "Glass TTYs".

Wikipedia, Computer Terminal.

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