One of the demos I’ve carried across nearly all the platforms I’ve worked on is the rotating cube demo, typically with back-face culling (hidden line/face removal), perspective, and fast integer maths. The code has been ported to the Gameboy, CPC, PC, Atari ST and Scratch. On more capable systems I usually add filled-in polygons with simple texture mapping and Gouraud shading I first wrote this demo around 30-odd years ago for the Spectrum, and I …
To be honest, I never thought I’d be developing on the Spectrum again, surrounded by such a great community, yet here we are. And to help spread the my love of all things retro, I’ve started a couple of new channels. YouTube I’ve got a new YouTube channel where I’ll be posting videos of my retro builds and repairs, gameplay and general musings. The URL is http://youtube.com/breakintoprogram I’ll still be documenting a lot of the …
This mini project was a good opportunity for me to practice my soldering skills, as well as get my hands on a Spectrum 128K clone that I could use for various projects. I have enjoyed reading Chris Smith’s excellent articles on reverse engineering the ZX Spectrum ULA. The Harlequin is the physical embodiment of his work. The board comes in two variants; a 48K version (currently on revision G), and a 128K version (on revision …
