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Top 3 dx7 Open-Source Projects
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Project mention: Reverse-engineering the Yamaha DX7 synthesizer's sound chip from die photos | news.ycombinator.com | 2024-01-12I 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:
I've been writing a lot of 8-bit assembler for the 6303, which is in the same processor family as the CPU in the TRS-80, which the author is writing code for (for this project in case anyone is wondering: https://github.com/ajxs/yamaha_dx97). I ran into the exact same issue. I wrote a MAME driver for the target platform, so I could test my builds on my development machine. Obviously that sped things up a lot. The MAME debugger isn't really a tool for unit testing, and can't really be easily instrumented, but I was able to write a lot of scripts for the debugger which would set up the breakpoints and system memory for an individual 'test'. Not quite unit testing, but as close as I could get cheaply.
dx7 related posts
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Reverse-engineering the Yamaha DX7 synthesizer's sound chip from die photos
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Unit testing on an 8-bit CPU
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MAME 0.260
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Motorola 6800 EXORciser development system simulator
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Is a Yamaha dx9 worth it?
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Anyone have luck using the Roland UM-ONE MK2 between Dexed and their DX7? My UM-ONE will only send to DX7 with Midi-OX.
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Help programming Joseph And The Amazing Colored Dreamcoat!
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Index
What are some of the best open-source dx7 projects? This list will help you:
Project | Stars | |
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1 | dexed | 2,708 |
2 | yamaha_dx7_rom_disassembly | 60 |
3 | yamaha_dx97 | 18 |
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