Compared with esplay, the S3 module with higher performance is used, the headphone jack is removed, and NS4168 is used to drive the speaker directly. Some circuits are simplified. Don’t worry about wiring. I use automatic wiring...
The function has been basically verified and can run normally. The power detection function is currently not working. The firmware is transplanted based on RetroGo.
Original RetroGo: https://github.com/ducalex/retro-go
Transplantation from another boss: https://oshwhub.com/FantasyGM/espplay
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