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, CD/floppy disk theory of operation, and the 68k CPU are also on-topic. Channel logs: https://libera.irclog.whitequark.org/~h~yamahasynths
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<myon98>
Finally had a little bit of time to progress my YM2610B reverse engineering project
<myon98>
The ADPCM-B is implemented with a bunch of registers and ALUs connected together with a shared 8-bit bus, which is interesting but a little more complicated to analyze, which isn't helped by a patch of blurry region around the crucial control ROM
<myon98>
Everything still seems to be implemented with nothing more than a ripple carry adder
<andlabs_>
neat
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