Fixing a 30-year-old Roland synthesizer bug
Awesome work! I love the care and attention that people put into understanding these devices.I'm currently in the middle of a vintage synthesiser hacking project as well. Last year I made a fully annotated disassembly of the Yamaha DX7 firmware, and did some other technical analysis of the synth. Since then, I've been waiting for a chance to put this knowledge to good use. I found a DX9 on a local trading site, and I'm in the process of hacking its firmware to remove the 4-operator restriction that made it such an unpopular synth.