Awesome!
That said, I'm clueless and I can't figure it out.
I see here (https://www.elde.cz/datasht/ca3080.pdf) that in the old CA3080, pins 5 and 6 are "input bias" and output, but the LM13700N seems to have two pins as input bias (1 and 16) and 2 more as outputs (5 and 12)...