Yet another LPT DAC.
This time, it is built using the AVR ATtiny2313.

This is my open-source, non-commercial DIY project.

Link to the GitHub page: https://github.com/13chuck13-ua/Tiny-Sound-Source
It contains the microcontroller firmware code, the schematic, and the PCB design (including Gerber files).

- The device uses a minimal number of components.
- It is compatible with Disney Sound Source, Covox Speech Thing, and FTL Sound Adapter.
- Features automatic Covox/DSS mode switching with status indication.
- Audio in Covox mode is free from frequency limitations and "clicking" artifacts.
- Doubled output frequency (14 kHz) with simple linear interpolation in DSS mode.
- Includes an additional filter for DSS mode.
- Correctly recognized by auto-detection in most games.

Quick answers to common questions:
Yes, Wolfenstein 3D, Alone in the Dark and Dungeon Master automatically detect the device.
No, Hocus Pocus does not automatically detect the device. The auto-detection in that game is broken.

PS: Apologies for my poor English.