This page needs navigator.requestMIDIAccess with SysEx. If you are seeing this inside an embedded frame, open the page in its own tab. Chrome or Edge only; Safari and Firefox do not ship Web MIDI.
not connected
Device
Firmware—
MIDI port—
Engines—
UI state cmd 34
Undocumented. Polls twice a second while watching. Move around the FM-1's screens and see which bytes move: that is how we work out what they mean.
Live changes
Needs Start watching. WATCH expires after 3 s of silence, so a heartbeat runs automatically.
Parameters
Press Load parameters. Names come from the device, not from me.
Raw console
Frame is F0 7D 46 4C <cmd> <args> F7. Args are raw bytes. 1=INFO, 2=GET, 3=SET, 5=DESC, 22=WATCH, 25=PING, 27=TRACK, 34=UI_STATE.