feature/sound: ESS AudioDrive ES1688 #4296
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Sound is not working, and neither is MPU-401
…u's internal timer emulation Co-authored-by: OBattler <oubattler@gmail.com>
Co-authored-by: OBattler <oubattler@gmail.com>
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Summary
This PR adds the ESS AudioDrive ES1688 sound card, including ESS ESFM emulation via the ESFMu emulator.
The card's features have been tested in Windows 95, Windows 3.1 and in DOS games, both with ESS support and without.
Checklist
References
The following application guides are for different ESS AudioDrive models. I cross-referenced them extensively.
ES1868 AudioDrive.pdf
es1888.pdf