Documentation Contents

The documentation for the Compukit UK101 simulator consists of the following pages:

• Contents and Introduction. Project introduction - this page.
• History and Further Details. A brief introduction to the history and architecture of the Compukit UK101 computer and links to further information.
• Quick Start. Using the simulator to run a simple program.
• Operation Guide. More detailed operating instructions.
• System Configuration. How to change some of the simulator settings.
• Sample Programs and Tapes. Some details about the sample programs and tapes supplied with the simulator.
• Utility Applications. Details of the utility applications supplied with the simulator.
• Additional Functions. Details for extra function unique to the simulator.

For programmers interested in understanding or changing the Java source code for the simulator, some extra documentation is available:

• Source code details. Some comments and notes about the source code for the simulator.

Project Home Page

The project itself is available from SourceForge:

http://uk101.sourceforge.net

Introduction

Project Aims

The aim of this project is to produce a simulation of the Compukit UK101 computer that is capable of running original UK101 programs. In particular it is an aim to be able to run the Premier Publications Invaders space invaders game, which ought to be a good test of a working system.

The project has been written in Java to enable it to run easily on most systems and the user interface elements have been written as simple Java Swing interfaces.

Current Status

The project provides a fairly complete emulation of a standard UK101. The default configuration has 8KB of RAM and an original 16 row by 48 column video display. It is fitted with the original BASIC ROMs and the New Monitor (or MONUK02) monitor ROM. Many of these parameters can be changed via a set of configuration properties.

Ohio Scientific Superboard II

The UK101 was heavily based on and very similar to the US Ohio Scientific Superboard II machine. By using the ROM images from the Superboard and setting the correct keyboard and video configuration this simulation will work as an OSI machine and run programs for the Superboard. A suitable set of ROMs and a sample set of configuration properties can be be found in the samples/superboard directory.

Additional Documentation

• UK101 Manual - a scan of the original Compukit UK101 manual.
• The New Monitor - a scan of the information sheet about the "new monitor" supplied with later machines.
• The Extended Monitor - a scan of the information sheet about the extended monitor provided on cassette tape with original systems.
• The CEGMON Monitor - a scan of the CEGMON monitor user's guide.
• The WEMON Monitor - a scan of the Watford Electronics WEMON monitor user's guide.

Acknowledgements

Although I don't know any of these people, I think they all deserve an honourable mention for starting me down a path which still continues!

• Dr A A Berk - listed as the author of the UK101 manual and the original series of Practical Electronics artiles, so I guess largely responsible for the machine.
• Mr David Fine - whose name and phone number were in the manual for when you needed "technical advice". As someone who soldered their kit together a little too quickly and then found it didn't quite work first time, I phoned him and he got me up and running.
• Phil Reeve - listed as the author of the Invaders game - many a happy hour.

And these people have helped significantly with testing, suggestions, explanations, programs etc:

• Craig Clapp - author of the excellent 8K Super Invaders game. A copy of this game is included with Craig's kind permission.
• Martin Ward - for software for recovering data from old and poor quality cassette tapes, and author of the Real-time Star Trek game. A copy of this game is included with Martin's kind permission.