Ensoniq AudioPCI

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The Ensoniq AudioPCI is a low-cost PCI sound card that notably used software to emulate a MIDI synthesizer using a proprietary wave table format. It also supported up to 48kHz PCM input and output and up to 4 channels in some configurations. It is also the only sound card model currently supported in VMWare virtual machines.

After the AudioPCI was released, Ensoniq was acquired by Creative Labs, which re-labeled the AudioPCI as the SoundBlaster PCI 64, and later the SoundBlaster PCI 128. The PCI Subclass and Revision registers can be used to detect exactly which model is installed, and each model has similar (but not identical) register sets.

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