Coding a ZX Spectrum Demoscene Intro

The author recounts creating a retro-style demoscene intro for the ZX Spectrum, a project inspired by 80s crack intros. The intro includes classic elements like smooth scrolltext, AY soundtrack, and parallax starfield. The blog post details the technical challenges, tools used, and the learning process involved in Z80 assembly programming. The author highlights the use of a Makefile-driven build system, Pasmo assembler, and a web-based asm editor for debugging. The project required extensive manual debugging, often aided by notepad sketches and walks with the author’s dogs.