Looking for info of the Yamaha YMF704C

[Grumble]

https://youtu.be/BU9uqEE7WdY

I just fell in love with the Yamaha FM chips.
Built three modules that uses the YMF262, and now I have a new victim, the YMF704C (I have the S version).
S means it’s a square chip with 25 pins at all four sides.
This chip should be capable of playing FM ánd Wavetable sounds. It also has a midi input.
I would very much like to know how to use the midi input, what registers I have to fill with what to play GM midi.
The FM part is comparable, if not similar to that of the YMF262, so that should work for me, but I have no idea if the YMF704C uses midi for that too...
So, some help will be very much appreciated. And last but no least, I have no commercial intentions whatsoever!

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YMF704C.pdf
Description:	The datasheet of the ymf704c	Download (listen)
Filename:	YMF704C.pdf
Filesize:	971.79 KB
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