Doom on a DVD player

# Doom on a DVD player </div> This is the written version of the talk above. Same story, with more detail: the real bytes off the disc, the measurements, and a couple of figures you can poke at. Watch, read, or both. I have a cheap portable DVD player, a JVC XV-PY1000A that cost me about $75. It's a top-loader, so I propped the lid open and you can watch the disc spin. Later that came in handy, when we needed to film the laser. And it plays Doom: the first level, E1M1, the Hangar. You pick a skill level, walk around and shoot zombies. The zombies shoot back. The dead stay dead, pickups stay picked up, and when you hit the exit switch you get Doom's tally screen. <figure> <img src="/blog/vobdoom/photo-hangar.webp" alt="The JVC, lid propped open, in the Hangar. The red dot on the disc is the laser." loading="lazy" style={{width: '100%', maxWidth: '560px', display: 'block', margin: '0 auto'}} /> <figcaption>The JVC, lid propped open, in the Hangar. The red dot on the disc is the…