Legendary Gravis Ultrasound sound card gets new open-source clone — Beavis Ultrasound remake includes complete KiCad schematics, PCB layout, sample ROM, and more

Beavis Ultrasound PnP ISA Sound Card Replica.

There’s a new remake of the legendary Gravis Ultrasound ISA soundcard on the block with the arrival of the open-source Beavis Ultrasound project. Developer schlae shared details of this amusingly named mid-90s-cultural phenomenon portmanteau, Beavis Ultrasound PnP ISA Sound Card Replica, on GitHub on Monday. The repository includes complete KiCad schematics, PCB layout, sample ROM, reverse‑engineered GAL logic (for an operational IDE CD-ROM interface), assembly notes, and more. You’ll still need to source an old AMD AM78C201 InterWave chip to complete this DIY project, though.

(Image credit: schlae on GitHub)