GR!MM 1.0

GR!MM 1.0, the first public release: a dark ambient, dungeon synth and deathdream firmware for the M-VAVE FM-1.

Install: pick GR!MM on the FM-1 Firmware Hub in Chrome or Edge, or download
grimm.fwsc below and install it with py tools\fm1_install.py grimm.fwsc. Installing firmware is at your own risk;
the hub's Rescue page brings a stuck FM-1 back.

Try it first: the demo runs the same firmware in your browser. The
editor edits sounds live on the FM-1, loads samples and makes backups.

What's in it:

• Four tracks with six shared voices and seven sound sources: VA, 6-operator FM (fully editable on the FM-1), SAMPLE, VOICE, WHEEL, PHYS and PHASE
• 40 factory sounds and 64 slots for your own, with names
• Four factory samples (URCHIN, LEAVE, NIKOLAI, M-SOFT; CC0), written into empty sample slots at the first start. RESTORE FACTORY SAMPLES is on SYSTEM 2 and in the editor
• Effects: TAPE, GRAIN with FREEZE, DELAY, and SPACE (reverb up to ~32 s, and infinite)
• Per track: envelope, LFO, filter, scales, one-key chords, arpeggiator, latch
• A 64-step sequencer per track with chance, ratchets, note lengths, step locks and pattern tools
• Song mode, slots A–D, a performance layer (freeze, throws, tape stop, reverse, filter sweeps, stutter)
• MIDI in and out, MIDI learn, USB audio, autosave, the battery level on HOME

The manual explains every page and combo.

Package identity: FM-1_966. Your sounds, slots, settings and samples are kept when you update.

Free software under GPL-3.0; LICENSE, LICENSING.md and LICENSES.zip are attached. Built on Dinghy (zvenson),
Felucca (Leo Kuroshita, Hügelton Instruments) and SLOOP (isod89).