In this article we're going to take a look at how to reverse-engineer vintage synthesiser firmware. The synthesiser I've chosen for us to look at is the Yamaha DX7 (See Appendix: Why Choose This Synth?). You don't need a DX7 to follow along at home, but you will need a copy of the DX7 V1.8 firmware (available here) and the Ghidra disassembler. Who is this article for? This article's intended audience is people from a technical background who are new to reverse-engineering, 8-bit architectures, o...