A Beavis Ultrasound PnP ISA sound card replica

Adafruit reports that designer Eric Schlaepfer has open-sourced the Beavis Ultrasound PnP, a replica of the classic Gravis Ultrasound sound card for vintage IBM PC machines. Unlike other clones, this design includes the full schematic and reverse-engineered source code for the card's logic chips. The files are published on GitHub under an open license, but Schlaepfer notes the board hasn't been fabricated or tested yet—so anyone building one should proceed at their own risk. For retrocomputing enthusiasts, it's a chance to bring a legendary piece of hardware back to life.

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