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SIO and Sound with the MSX Boards, designed for RC2014
https://youtube.com/watch?v=PlqrQ548rpE
Dean Netherton Dec 28, 2020

"Demonstration of the serial interfacing and sound/video of MSX series of boards designed for the RC2014
More information at:
https://hackaday.io/project/175574-msx-compatible-boards-for-rc2014
"