cr1901 changed the topic of ##yamahasynths to: Channel dedicated to questions and discussion of Yamaha FM Synthesizer internals and corresponding REing. Discussion of synthesis methods similar to the Yamaha line of chips, Sound Blasters + clones, PCM chips like RF5C68, and CD theory of operation are also on-topic. Channel logs: https://libera.irclog.whitequark.org/~h~yamahasynths
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<NiGHTS>
Ken Shirriff sur Twitter : "The Yamaha DX7 synthesizer (1983) defined the sound of 1980s pop music with its digital FM synthesis. I opened up the chip that powers it to take a look inside. With an estimated 45,000 transistors, this chip generated 16 notes at once. 🧵… https://t.co/IhOOMz0oAS"
<cr1901>
It's a good intro to how FM works too
<andlabs>
good
<andlabs>
" Each shift register stage used capacitors and inverters, transferring data from one capacitor to the next every time the clock cycled."
<andlabs>
welp
<andlabs>
so much for storing this chip as a simple visual6502-style netlist 🙃
<andlabs>
unless the MAME netlist format or something else can encode capacitors
<andlabs>
or you can make capacitors out of transistors which makes no sense ot me
<andlabs>
also the original book on FM synthesis covers this six-operator style