M-VAVE FM-1: MIDI CC, NRPN and OSC map¶
The M-VAVE FM-1 as named OSC addresses — 21 CC, 2 SysEx commands — ready to use from Claude (MCP), SuperCollider, Sonic Pi, TouchDesigner or any OSC app via osc-bridge.
| Device | M-VAVE FM-1 |
|---|---|
| Vendor | M-VAVE |
| OSC prefix | /fm1 |
| Source | 📘 From the manufacturer's documentation |
| Firmware | opn1-2.0.0 |
| Revision | OPN-1 2.0.0 (alternative firmware by putchdev) |
| Upstream | vendor-doc |
| Driver file | devices/m-vave/fm-1.vendor.fw-opn1-2.0.0.json |
Not tested on the device yet
This driver comes from documentation or community data and has not been checked on real hardware. If you own one, a quick test and a pull request promoting it helps everyone — see CONTRIBUTING.
Other variants of this device: fm-1.vendor.fw-15, fm-1.vendor.fw-16, fm-1.vendor.fw-386dx-1.0.2, fm-1.vendor.fw-amb-1.3, fm-1.vendor.fw-beetle-1.4.25, fm-1.vendor.fw-bunker-1.0.0, fm-1.vendor.fw-bytemania-1.2.0, fm-1.vendor.fw-carnac-0.9.3, fm-1.vendor.fw-chipbox-1.2.4, fm-1.vendor.fw-choralroot-0.26.1, fm-1.vendor.fw-chord-0.3, fm-1.vendor.fw-clipper-1.1-experimental, fm-1.vendor.fw-coralflower-0.5, fm-1.vendor.fw-cs1-2026.10.22, fm-1.vendor.fw-ctl-1.0, fm-1.vendor.fw-cutador-1.2.1, fm-1.vendor.fw-dinghy-0.4, fm-1.vendor.fw-drift-0.8, fm-1.vendor.fw-dub-1.3.0, fm-1.vendor.fw-duell-1.0, fm-1.vendor.fw-emb-1.5.2, fm-1.vendor.fw-etch-1.61, fm-1.vendor.fw-fart-1.1.0, fm-1.vendor.fw-felucca-1.6.1, fm-1.vendor.fw-felucca-salt-0.9-salt14, fm-1.vendor.fw-felucca8-1.6.1-and-sequences, fm-1.vendor.fw-fimba-0.6.1, fm-1.vendor.fw-flyfish-1.0.1-4e5efb8, fm-1.vendor.fw-fm106-beta4, fm-1.vendor.fw-fm1gm-1.0.2, fm-1.vendor.fw-fmel-1.0, fm-1.vendor.fw-fmini-1.8.0, fm-1.vendor.fw-fomajam-0.1.6, fm-1.vendor.fw-fomni-0.4, fm-1.vendor.fw-frasil-1.0, fm-1.vendor.fw-frodhes-0.9.4, fm-1.vendor.fw-fumi-1.1.0, fm-1.vendor.fw-gammawave-1.0-gw, fm-1.vendor.fw-ghoulbox-2.3.2, fm-1.vendor.fw-golana-1.2, fm-1.vendor.fw-golanadz-0.1.0-beta, fm-1.vendor.fw-grimm-1.0, fm-1.vendor.fw-hera-1.1, fm-1.vendor.fw-hortator-0.23.3, fm-1.vendor.fw-hyp1-1.5.54, fm-1.vendor.fw-jangada-1.0.1, fm-1.vendor.fw-jiant-0.9.9-beta4a-813869d, fm-1.vendor.fw-kawa-0.5, fm-1.vendor.fw-ketch-0.1-beta, fm-1.vendor.fw-loom-0.7, fm-1.vendor.fw-maku-1.0, fm-1.vendor.fw-mc1-1.2.0, fm-1.vendor.fw-melodee-1.4.5, fm-1.vendor.fw-min1-0.2.1, fm-1.vendor.fw-minitone-1.0.2, fm-1.vendor.fw-modelar-0.3, fm-1.vendor.fw-monk-0.9.1, fm-1.vendor.fw-morpheus-1.0.0, fm-1.vendor.fw-mutable-1.0, fm-1.vendor.fw-mycelium-1.0-test, fm-1.vendor.fw-niagara-0.2, fm-1.vendor.fw-nmsfm-0.5, fm-1.vendor.fw-noizdemons-666, fm-1.vendor.fw-obervave-3.0.1, fm-1.vendor.fw-open-14, fm-1.vendor.fw-orbit-0.7.1, fm-1.vendor.fw-pigeon-0.5.0-beta.1, fm-1.vendor.fw-polly-0.5, fm-1.vendor.fw-purplemonkey-0.11, fm-1.vendor.fw-quest-38, fm-1.vendor.fw-rainbow-1.1.5-rb, fm-1.vendor.fw-shineon-3.0.1, fm-1.vendor.fw-sid-0.1, fm-1.vendor.fw-sid1-1.0.0, fm-1.vendor.fw-sidou-0.3.1, fm-1.vendor.fw-skiff-1.4, fm-1.vendor.fw-sloop-2.8.1, fm-1.vendor.fw-sloop-alg-alg05-test, fm-1.vendor.fw-sloop-banks-2.5-b28-test, fm-1.vendor.fw-sloop-floyd-2.4, fm-1.vendor.fw-sloopdx-4.0, fm-1.vendor.fw-tessera-2.0.1, fm-1.vendor.fw-tonitor-2026.10.23, fm-1.vendor.fw-tribe-0.3-beta, fm-1.vendor.fw-tuna-1.0-fbc56d3, fm-1.vendor.fw-unholy-0.2.3, fm-1.vendor.fw-vector37-0.3.2, fm-1.vendor.fw-waveloop-1.0.5.2-midi23, fm-1.vendor.fw-winampfm-0.12, fm-1.vendor.fw-x0x-1.1.0, fm-1.vendor.fw-x0xrmx-1.1.0, fm-1.vendor.fw-zen-1.2, fm-1.vendor.fw-zp12-2.5.
How do you control it?¶
Find the MIDI ports, then start the bridge with this driver:
osc-bridge detect # prints the ready-to-run line for what is plugged in
osc-bridge run --device devices/m-vave/fm-1.vendor.fw-opn1-2.0.0.json --out-port <N> --in-port <M>
Then send OSC to 127.0.0.1:7777, for example:
From Claude or any MCP client, the osc-bridge mcp server exposes this driver as fm1: ask “what can the M-VAVE FM-1 do?” and it reads this map with list_routes. See the MCP guide.
MIDI CC and NRPN parameters (21)¶
| OSC address | CC | NRPN (MSB/LSB) | Range | Nature | Section |
|---|---|---|---|---|---|
/fm1/lfo_speed_chip_wide |
1 | 0–127 | continuous | Track | |
/fm1/psg_volume |
7 | 0–127 | continuous | Track | |
/fm1/instrument_library_slot |
9 | 0–127 | continuous | Track | |
/fm1/algorithm |
14 | 0–127 | continuous | Track | |
/fm1/feedback |
15 | 0–127 | continuous | Track | |
/fm1/total_level_o1_16_19_o1_o4 |
16 | 0–127 | continuous | Track | |
/fm1/multiple_o1_20_23_o1_o4 |
20 | 0–127 | continuous | Track | |
/fm1/detune_o1_24_27_o1_o4 |
24 | 0–127 | continuous | Track | |
/fm1/rate_scaling_o1_39_42 |
39 | 0–127 | continuous | Track | |
/fm1/attack_rate_o1_43_46 |
43 | 0–127 | continuous | Track | |
/fm1/decay_1_rate_o1_47_50 |
47 | 0–127 | continuous | Track | |
/fm1/decay_2_rate_o1_51_54 |
51 | 0–127 | continuous | Track | |
/fm1/sustain_level_o1_55_58 |
55 | 0–127 | continuous | Track | |
/fm1/release_rate_o1_59_62 |
59 | 0–127 | continuous | Track | |
/fm1/am_on_o1_70_73 |
70 | 0–127 | continuous | Track | |
/fm1/lfo_on_chip_wide |
74 | 0–127 | continuous | Track | |
/fm1/fm_depth_pms |
75 | 0–127 | continuous | Track | |
/fm1/am_depth_ams |
76 | 0–127 | continuous | Track | |
/fm1/stereo |
77 | 0–127 | continuous | Track | |
/fm1/bend_range |
81 | 0–127 | continuous | Track | |
/fm1/ssg_eg_o1_90_93 |
90 | 0–127 | continuous | Track |
SysEx commands (2)¶
| OSC address | Arguments |
|---|---|
/fm1/program |
program: u7 |
/fm1/system/identify |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /fm1/note/on <note> <velocity>, /fm1/cc/<number> <value>, /fm1/pitchbend <0-16383>, /fm1/program_change <n>.
Limitations¶
OPN-1 2.0.0 by putchdev (GPL-3.0), a instrument firmware for the FM-1. version 2.0.0 not in source: APP_VER from --release (default DEV); GenMDM-compatible CC layout (YM2612 registers per operator); docs/MIDI.md is the author's full spec; channel 16 (and 15 for data) reserved for its web-app protocol: ch16 CC 0x1F-0x7F = version query, part setup 0x20-0x27, patch frames 0x50-0x5E, chunks 0x6A-0x6F, song stream 0x60-0x7F (opn1.c:1088-1260, docs/MIDI.md 2-3). Channels: 6 FM parts, each with channel 1-16, off or All (= ch 1-6 and 12-15). Modes (CC 26 on ch16 / GLO page): Normal (default 'Single': part 1 on All), GENMDM (part n = FM ch n on MIDI ch n, mono), PANEL (any ch but 10 plays the selected part). Ch 7-9 PSG tones, 10 drum kit (or PSG noise), 11 PSG noise, 15-16 transfers. USB+TRS merged. Pitch bend: 14-bit on FM parts and PSG tones; range 2 st default, CC 81 sets 0-17 st; on ch 15/16 bend and poly AT carry transfer data. Aftertouch: ignored for sound (poly AT on ch 15/16 = transfer data). Clock: none (no F8 handling, no clock out). MIDI out: USB, ch16 CC replies to the web app only; CC 28+p on ch16 when part p's slot changes; panel keys not sent. NRPN: none (no CC 64, no RPN; bend range by CC 81). SysEx `-`: no SysEx used by the app (docs/MIDI.md: 'SysEx is not used'); transfers are CCs on ch16. SysEx `F0 00 32 45 / F0 22 24 35`: M-VAVE vendor update protocol kept (identify F0 00 32 45 00 00 00 40 7F F7 -> 27-byte product string; F0 22 24 35 7F F7 upgrade; F0 22 24 35 7D F7 reboots to mask-ROM UBOOT: never send). SysEx `F0 43`: no raw DX7 parser: absent. Identity: vendor identify FM-1_950 (dev), release FM-1_95Y (2.0.0 -> FM-1_950); rescue FM-1_000; USB product 'OPN-1 FM-1' ('Felucca Update' in rescue). Version query: ch16 CC 0x1F 0 -> CC 1C major, 1D minor, 1E patch (2.0+).
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Play a virtual FM-1 with any of its community firmwares: M-VAVE FM-1.