So I am trying to figure out how to interface simple circuitry with the ym2612 chip. But I dont know where all the data and control signals go. Besides, I am not even sure if the data Im inputting is serial or parallel. Also how does the data inputted control different frequencies?
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You want to drive the bare chip? I only found a Japanese data sheet, but from the block diagrams you need something that can drive an 8-bit bus and generate the right control signals.
The two A0/A1 pins are used to select registers and read/write their values. There’s some Sega Genesis manuals out there that go over what the registers do.
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If you have success let me know so i dont end up forking out 4-500 on that purdee lil black box with 2 chips in XD
id rather pay for the small box rather than sacrifice an actual Mega Drive and do all that wire routing =D
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Yeah, I would rather just interface directly with the chip. Besides, I dont really have the space for a giant megadrive synth lol
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Maybe you can look at this project:
And see what you can gather?
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Thats a nice project! I will definitely look into that.
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Oh nooo! Borked link 
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