Assembly hd6303 Projects

yamaha_dx7_rom_disassembly

4 60 7.1 Assembly

Yamaha DX7 Firmware ROM annotated disassembly.

Project mention: Reverse-engineering the Yamaha DX7 synthesizer's sound chip from die photos | news.ycombinator.com | 2024-01-12

I wrote the article mentioned by Ken: https://ajxs.me/blog/Yamaha_DX7_Technical_Analysis.html
I've unwittingly become a bit of a Yamaha FM Synth historian!
Here are some other contributions to reverse-engineering the DX7:
A fully documented disassembly of the DX7 ROM: https://github.com/ajxs/yamaha_dx7_rom_disassembly
A new firmware ROM that makes the DX9 function like a DX7:

InfluxDB

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NOTE: The open source projects on this list are ordered by number of github stars. The number of mentions indicates repo mentiontions in the last 12 Months or since we started tracking (Dec 2020).

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