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Latest:
  • Experiencing the Altair 8800
  • Gemini 80-Bus Resource
  • Running XBeaver with Docker
  • The TELSTAR Videotex System
  • Removing the Bounce from a Rotary Encoder in C++
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Altair CP/M Other 

Experiencing the Altair 8800

January 8, 2021January 8, 2021 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.

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Altair Apple II CP/M Other 

Microchess to Project Chess

July 30, 2020January 8, 2021 john

Microchess is probably, albeit indirectly, responsible for the success of Apple, the success Microsoft and the success of the IBM

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Apple II Other 

Using MAME to Emulate the Apple II+

March 30, 2020January 5, 2021 john

Introduction The article 6502 Cross Assembly for the Apple II using MacOS, describes, as the titles suggests, how to use a

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CP/M Latest Other Workshop 

Z80 SBC using Tom Szolyga’s SBC-Z80 Board

March 11, 2020January 5, 2021 john

Introduction This article forms a short review of the ‘homebrew’ Grant Searle designed Z80 CP/M machine, built using Tom Szolyga’s Z80SBC printed

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Apple II Other 

Programming the Videx Videoterm with Assembly Language

July 31, 2018January 5, 2021 john

Introduction This article describes how to write assembler based software that utilises the Videx Videoterm 80 Column Display. The aim

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CP/M Other 

Patching WordStar for use with a VT-100 Terminal

July 5, 2018January 8, 2021 john

The following is a complete set of the patches to customise Wordstar 3 for the VT100 terminal as derived from

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Apple II Other Workshop 

Apple IIe RAM Swap the Easy Way

June 24, 2018January 5, 2021 john

This post describes what I think is a fairly simple way to swap the eight soldered RAM chips found on

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Acorn CP/M Other 

Patching WordStar for the Acorn Z80 Second Processor

May 31, 2018January 8, 2021 john

Introduction This article described the the very simple steps required to patch WordStar 3.0 so that it works as expected

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Acorn CP/M Other 

Patching dBaseII for the Acorn Z80 Second Processor

May 2, 2018January 7, 2021 john

Introduction This article described the the very simple steps required to patch dBaseII so that it works as expected on

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Apple II Other 

6502 Cross Assembly for the Apple II using MacOS

December 31, 2017January 5, 2021 john

Introduction Sometime back I decided to undertake some 6502 assembly language programming to run on my Apple II+ and IIe.

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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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