Roland D-70 mod: custom OS with live synth pages, DLM page, new effects on the effects chip (drive, bit crush, decimator, rectifier, resonant filters), custom U-110 cards and a keyboard fix. Patches your own EPROM dumps. No Roland code included.
firmware reverse-engineering effects roland synthesizer work-in-progress eprom custom-firmware custom-os vintage-synth 80c196 rosetta-os d-70 la-synthesis synth-mod roland-d70 u-110 d70 synth-firmware
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Updated
Nov 7, 2026 - Python