High Fidelity Dreams is an Atari ST/STE music disk by Aura (code and design: Aeon), released in 1992 at the BMT-Party in Essen. It contains 8 Amiga modules by Phenomena and Sanity. This project starts from a study of the original floppy disk and ports the demo to other machines.
Run it in your browser: https://stuff.github.io/hfd/
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Rendered by the web port, verified frame by frame against the demo running in Hatari (ports/web/scripts/screenshots.ts).
| Folder | Contents |
|---|---|
rip/ |
Everything extracted from the disk (hifidrea.st): the 8 original .mod files, the graphics and the font, the texts, the disassembled 68000 code, and the tools that drive Hatari. See rip/README.md. |
rip/SPEC.md |
The specification of the demo's behaviour, independent of any platform. It is the starting point for any new port. |
ports/web/ |
The browser port, in Vite + TypeScript. Complete: intro, text pages, menu, loading screens, music. Verified frame by frame against the demo running in Hatari. Published on GitHub Pages on each push to main. See ports/web/README.md. |
ports/native/ |
The native port for Windows, Linux and macOS, in C + SDL3: a transcription of the web port, identical to it byte for byte (frames and sound). A single executable per OS, built by GitHub Actions and published on each v* tag. See ports/native/README.md. |
The ports share no code. What they share is the data in rip/ (modules, bitmaps, palettes, text page RAM) and the specification.
Each port reads this data from rip/ or copies it at build time, without duplicating it in the repository.
- Amiga: the most natural target (50 Hz, Paula, Copper for the rasters, blitter for the spreader). See SPEC.md, section 9. In
ports/amiga/(68000 assembly, a bootable disk for an A500 with 1 MB, built and verified on macOS with vasm and vAmiga): the whole demo, identical to it frame by frame (to the web port for the text pages' analysers); still to be tried on a real Amiga. - Reference video: it is not versioned (about 390 MB in
rip/out/). It can be regenerated in a few minutes, see "Reference video" in rip/README.md. It is needed to verify a port.