M-VAVE FM-1 (Skiff 1.4) MIDI CC chart, NRPN and OSC map¶
The M-VAVE FM-1 MIDI implementation: 21 CC, 2 SysEx commands, each named, for Claude (MCP), SuperCollider or any OSC app.
| Device | M-VAVE FM-1 |
|---|---|
| Vendor | M-VAVE |
| OSC prefix | /fm1_skiff |
| Source | 📘 From the manufacturer's documentation |
| Firmware | skiff-1.4 |
| Revision | Skiff 1.4 (alternative firmware by illuminus5) |
| Upstream | vendor-doc |
| Driver file | devices/m-vave/fm-1.vendor.fw-skiff-1.4.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 versions of the M-VAVE FM-1 (93)
stock firmware V15 · stock firmware V16 · 386DX 1.0.2 · AMB-1 1.3 · BEETLE 1.4.25 · Bunker Evolved 1.0.0 · Bytemania 1.2.0 · Carnac OS 0.9.3 · Chipbox 1.2.4 · ChoralRoot 0.26.1 · fm1-chord 0.3 · Clipper 1.1-experimental · CoralFlower 0.5 · CS-1 2026.10.22 · CTL-1 1.0 · Cut-A-Dor 1.2.1 · Dinghy 0.4 · DRIFT 0.8 · DUB-1 1.3.0 · DUELL 1.0 · Evander's Music Box 1.5.2 · ETCH 1.61 · Fart Machine One 1.1.0 · Felucca 1.6.1 · Felucca [Salt] 0.9-salt14 · Felucca 8 Patterns 1.6.1_and_sequences · FiMba-1 0.6.1 · Flyfish 1.0.1-4e5efb8 · FM-106 Beta4 · FM1-GM 1.0.2 · FMEL-1 1.0 · FMini-1 1.8.0 · FOMAJAM 0.1.6 · FoMni 0.4 · FRASIL 1.0 · Frodhes 0.9.4 · FuMi-1 1.1.0 · Pocket GammaWave 1.0-GW · GHOULBOX 2.3.2 · Golana 1.2 · Golana DZ Edition 0.1.0-beta · GR!MM 1.0 · HERA 1.1 · Hortator 0.23.3 · HYP-1 1.5.54 · Jangada 1.0.1 · JIANT FM 0.9.9-beta4a-813869d · KAWA 0.5 · Ketch 0.1-beta · LOOM-8 0.7 · MAKU 1.0 · MC-1 1.2.0 · Melodee 1.4.5 · MIN-1 0.2.1 · Mini-Tone 1.0.2 · MODELAR 0.3 · MONK-1 0.9.1 · MORPHEUS 1.0.0 · Mutable Dreams 1.0 · MYCELIUM 1.0-test · Niagara Drift 0.2 · No Man Sky FM 0.5 · NOIZ DEMONS 666 · OberVave 3.0.1 · FM1 Open V14 · OPN-1 2.0.0 · ORBIT 0.7.1 · PIGEON 0.5.0-beta.1 · Polly 0.5 · PurpleMonkey 0.11 · FM1 Quest 38 · Rainbow Mode 1.1.5-rb · Shine On 3.0.1 · FM-1 SID 0.1 · SID-1 1.0.0 · SIDOU 0.3.1 · SLOOP 2.8.1 · SLOOP ALG ALG05-TEST · SLOOP DX7 Banks 2.5-b28-test · SLOOP Floyd FM 2.4 · sloopDX 4.0 · Tessera 2.0.1 · Tonitor 2026.10.23 · TRIBE 0.3-beta · Tuna 1.0-fbc56d3 · Unholy Union 0.2.3 · Vector37 0.3.2 · WaveLoop FM-1 1.0.5.2-midi23 · winampFM Synth 0.12 · X0X 1.1.0 · X0X-RMX 1.1.0 · ZEN-1 1.2 · zp12 2.5
Try it in your browser
Play a virtual FM-1 with any of its community firmwares: M-VAVE FM-1.
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-skiff-1.4.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_skiff: 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_skiff/mod_wheel |
1 | 0–127 | continuous | Track | |
/fm1_skiff/glide |
5 | 0–127 | continuous | Track | |
/fm1_skiff/data_entry_msb |
6 | 0–24 | continuous | Track | |
/fm1_skiff/level |
7 | 0–127 | continuous | Track | |
/fm1_skiff/pan |
10 | 0–127 | continuous | Track | |
/fm1_skiff/expression |
11 | 0–127 | continuous | Track | |
/fm1_skiff/data_entry_lsb |
38 | 0–99 | continuous | Track | |
/fm1_skiff/sustain |
64 | 0–127 | switch | Track | |
/fm1_skiff/engine_resonance |
71 | 0–127 | continuous | Track | |
/fm1_skiff/release |
72 | 0–127 | continuous | Track | |
/fm1_skiff/attack |
73 | 0–127 | continuous | Track | |
/fm1_skiff/engine_brightness_cutoff |
74 | 0–127 | continuous | Track | |
/fm1_skiff/decay |
75 | 0–127 | continuous | Track | |
/fm1_skiff/reverb_send |
91 | 0–127 | continuous | Track | |
/fm1_skiff/chorus_send |
93 | 0–127 | continuous | Track | |
/fm1_skiff/delay_send |
94 | 0–127 | continuous | Track | |
/fm1_skiff/rpn_lsb |
100 | 0–127 | continuous | Track | |
/fm1_skiff/rpn_msb |
101 | 0–127 | continuous | Track | |
/fm1_skiff/all_sound_off |
120 | 0–127 | trigger | Track | |
/fm1_skiff/reset_all_controllers |
121 | 0–127 | trigger | Track | |
/fm1_skiff/all_notes_off |
123 | 0–127 | trigger | Track |
SysEx commands (2)¶
| OSC address | Arguments |
|---|---|
/fm1_skiff/program |
program: u7 |
/fm1_skiff/system/info |
Performance MIDI¶
Notes, pitch bend and any CC are also available: /fm1_skiff/note/on <note> <velocity>, /fm1_skiff/cc/<number> <value>, /fm1_skiff/pitchbend <0-16383>, /fm1_skiff/program_change <n>.
Limitations¶
Skiff 1.4 by illuminus5 (GPL-3.0), a groovebox firmware for the FM-1. 6 tracks; MIDI IN modes only CH1-6 (default) and SEL; per-track channel MENU > MIDI > T1-T6 CHANNEL (CH1-16, default 1-6), no OMNI, no CH5-8. blocks (seq.c:76, 1262); Extra engine DRUM-X (14): CC74 -> TONE (E3), CC71 none (midi_control.c:225); MIDI learn 10 entries (not 16), any of the 6 tracks, 3-byte entries; Program Change: n-th shown preset only; no DRUM kit / FM6 bank-slot special cases (ui.c:1443); MIDI out keys with key velocity, no CC1 out; Editor: no FM6 voice-bank (74-75) nor learn (78-79) commands; 76-77 TRANSPORT/PROJ_NAME, 78-80 POOL/LIST/PERFORM, 39 COLORS; Identity FM-1_700 family instead of FM-1_9xx. Channels: CH1-6: each track hears its own channel (T1.T6 CHANNEL, default 1-6; two tracks on one channel: first wins); SEL: every channel plays selected track; unassigned channels ignored. Pitch bend: 14-bit; RPN0 range 0-24 st + 0-99 cents, default 2; drum tracks ignore. Aftertouch: channel aftertouch = mod-matrix source; poly AT ignored. Clock: source INT/USB/TRS (MENU CLOCK); F8 steps, FA/FB/FC honoured; no SPP; no clock out (midi_clock.c ~Felucca, plus launch-point rescale). MIDI out: USB only: panel keys as notes on the track channel with key velocity (seq.c:751); no CC1, no clock. NRPN: none (CC98/99 only cancel RPN). SysEx `F0 7D 46 4C`: Felucca editor protocol fork: 1-38 + 39 COLORS, 64-67, FM6 68-71, menu 72-73, 76-77 transport/project name, 78-80 pool/list/perform; no 74-75 FM6 bank, no 78-79 learn. SysEx `F0 00 32 45`: M-VAVE update protocol kept (identify F0 00 32 45 00 00 00 40 7F F7 -> 27-byte product string). SysEx `F0 43`: absent: no raw DX7 parser (only editor FM6 commands). SysEx `F0 22 24 35 7D F7`: reboots to mask-ROM (never send). Identity: vendor identify 'FM-1_700' dev, release 'FM-1_7XY' (v1.4 -> FM-1_714) (felucca.c:45, tools/build.py:63-66); SMK-37 build 'SMK-37 Pro_700'; editor INFO 'FELUCCA v1.4' (editor.c:533); USB product 'Felucca'; no Universal Identity.
Frequently asked questions¶
Which MIDI CC controls the filter cutoff on the M-VAVE FM-1?
CC 74 (0–127), named /fm1_skiff/engine_brightness_cutoff in SynthHub's map.
How many parameters of the M-VAVE FM-1 can be controlled over MIDI?
SynthHub's map of the M-VAVE FM-1 lists 21 MIDI CC parameters, each with its number, range and a readable name; the full chart is on this page.
Can an AI agent like Claude control the M-VAVE FM-1?
Yes: SynthHub's hosted MCP server knows the M-VAVE FM-1's MIDI map, and its browser relay lets the agent send it parameter changes or load a sound, each sound change confirmed by you.