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Play five drum and synth parts on your FM-1
Sequence 909 and 808 drums, two bass voices and an FM synth together on an M-VAVE FM-1. This replacement firmware gives each part up to 64 steps, chains patterns into songs and shapes the combined output with reverb, delay and compression.
Built-in browser firmware emulator — running locally without FM-1 hardware. — DWNLO by Jeff Webb and contributors, derived from X0X/Felucca; GPL-3.0-only; upstream licensing.md contains complete source and asset credits.
Changes: Screenshot captured locally from the project firmware emulator; no physical device connected. Losslessly re-encoded as WebP.
Built-in browser firmware emulator — running locally without FM-1 hardware. — DWNLO by Jeff Webb and contributors, derived from X0X/Felucca; GPL-3.0-only; upstream licensing.md contains complete source and asset credits.
Changes: Screenshot captured locally from the project firmware emulator; no physical device connected. Losslessly re-encoded as WebP.
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Play five drum and synth parts on your FM-1
Sequence 909 and 808 drums, two bass voices and an FM synth together on an M-VAVE FM-1. This replacement firmware gives each part up to 64 steps, chains patterns into songs and shapes the combined output with reverb, delay and compression.

M-VAVE FM-1 Pocket Synthesizer
jeffwebb-to
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