File Structure

File Structure

dos-site/
├── README.md                  one-page entry point
├── CHANGELOG.md
├── index.html                 fake BIOS POST → redirects to prompt/
├── favicon.ico
├── make_fonts.py              generates f12.N.png palette variants
│
├── prompt/                    the DOS terminal
│   ├── index.html
│   ├── favicon.ico
│   ├── animated_favicon1.gif
│   ├── javascript/
│   │   ├── globals.js         shared state (palette, paths, flags)
│   │   ├── goFontGo.js        builds the 256 CSS rules
│   │   ├── classUtils.js      add/remove/test class helpers
│   │   ├── keyboard.js        keypress / keydown handlers
│   │   ├── terminal.js        echo, executeBatch, prompt rendering
│   │   ├── fs.js              the virtual C: drive
│   │   ├── commands-core.js   handleCmd, dir, type, etc.
│   │   ├── commands.js        echo, cd, cls, setcol, easter eggs
│   │   └── init.js            entry point
│   └── img/
│       ├── f12.7.png          master sprite sheet (light grey)
│       └── f12.<0-15>.png     CGA palette variants
│
└── emulators/
    ├── jsbeeb/                BBC Micro (vendored from mattgodbolt/jsbeeb)
    ├── jsnes/                 NES        (vendored from bfirsh/jsnes)
    └── genesis/               Sega Genesis (vendored from lrusso/Genesis)

Per-emulator layout

Emulator	Runtime	Wrapper	ROM dir
jsbeeb/	dist/ (Vite build)	the dist's own index.html (URL-driven)	dist/discs/
jsnes/	dist/jsnes.min.js	play.html	roms/
genesis/	Genesis.min.js	play.html	roms/

Each non-jsbeeb emulator also has a games.json mapping <key> → {title, rom} consumed by its play.html.

Notes on individual files

File	Purpose
index.html	4-second BIOS POST animation, then <meta refresh> to prompt/
prompt/index.html	Loads the JS modules in order, hosts the terminal <div>
prompt/img/f12.7.png	192×192 px, 16×16 grid of 12×12 px CP437 glyphs (light grey)
prompt/img/f12.<N>.png	Pre-tinted variant for CGA palette index N
make_fonts.py	One-shot PIL script that tints f12.7.png into the other variants