SID6581/8580 serial interface

I made this circuit for easy interfacing SID6581/8580 programmable sound generator, using only one signal line.
Serial port settings: 115200,8,N,1,N
The data is sent in RV pairs where R is the register and V is the value to be written into register.

Electronic schematic

Finished electronic circuit

Downloads

attiny2313sid.hex	HEX file to burn into ATTiny2313 microcontroller
	Fuses: H=0xDB L=0xEF

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