Documentation

A comprehensive manual for the Chroma 81 interface is currently being written. In the meantime, the following text document provides a technical description of the facilities provided by the Chroma 81 interface.

Click here to download the Chroma 81 technical description [V1.13] text file.

Tutorials

The Chroma 81 Getting Started Guide provides information on setting up the Chroma 81 interface and lists important pre-requisites and precautions that should be follow to ensure its successful operation. It also provides a step-by-step example of programming a compilation of ZX81 programs into a ZXC4 ROM cartridge, along with how to enhance existing programs through the use of alternate character sets and by superimposing colour.

Click here to download the Chroma 81 Getting Start Guide (V1.0).

A tutorial describing the process of colourising existing ZX81 games, using Space Raiders by Psion as an example, has been created by Robert Kacsich. The following contains the tutorial document, along with the generated colour file.

Click here to download the Chroma 81 Colourisation Tutorial [V1.0].