July 12, 2026
Bootleg beats, bruised feelings
Beavis Ultrasound PnP ISA Sound Card Replica
Retro sound card comeback sparks nostalgia, side-eye, and instant sellout envy
TLDR: An open-source remake of a classic 1990s PC sound card has retro fans excited, but it comes with a big catch: it hasn’t been fully built and tested yet. The comments turned into a mix of sold-out hype, warm childhood memories, and sharp jokes questioning whether the project is ready for prime time.
A lovingly recreated version of the old Gravis Ultrasound Plug and Play sound card just hit retro-computing circles, and the hardware nerds are absolutely having a moment. On paper, this is catnip for vintage PC fans: it’s an open-source remake of a beloved 1990s sound card, complete with the full circuit plan and even reverse-engineered logic files. In plain English, it’s a do-it-yourself path to bringing back a cult-favorite piece of gaming audio history — if you can find the rare main chip and you’re brave enough to build something the creator openly says hasn’t been fully tested yet.
And wow, the comments split instantly into two camps: teary-eyed nostalgia and maximum skepticism. One person cheered that it had already sold out on Tindie, which only made the project feel more mythical. Others got way more savage, zeroing in on the warning label and joking that this looked like the kind of thing someone had an AI “one-shot” without knowing if it actually works. Ouch.
But the real scene-stealer was the old-school memory lane energy. One commenter told a mini coming-of-age story about upgrading their childhood card with scavenged parts, only for the chunky beast to eventually fry itself. Another simply blurted out that they’d forgotten how much they loved theirs. Even the practical crowd showed up, pointing people to PicoGUS, a modern alternative for anyone who wants the vibe without the scavenger hunt. So yes, this is a niche hardware post — but in the comments, it became a full-blown retro reunion with hecklers.
Key Points
- •The Beavis Ultrasound PnP is an open source replica of the Gravis Ultrasound PnP ISA sound card that includes full schematics and reverse-engineered GAL source code.
- •The design depends on the AMD InterWave AM78C201 chip, which the article describes as providing essentially all sound card functionality.
- •The board has not been fabricated or tested, no fab package has been generated, and the article warns builders to proceed at their own risk.
- •Fabrication notes specify an 8.2 x 4.2 inch, 4-layer PCB, with ENIG plating suggested for the edge fingers as a practical choice.
- •The article provides programming and substitution instructions for the sample ROM, EEPROM, op amps, and GAL, including optional omission of the GAL if CD-ROM IDE support is unnecessary.