FM-1 firmware · 1.2.0
Bytemania
A bytebeat synth: play one-line formulas as notes, bend their numbers with the knobs, and write or randomly generate your own on the device.
- Made by
- lloyd (llozd)
- Released
- October 20, 2026
- Install
- On the FM-1 Firmware Hub · source on GitHub
- Scan
- Scanned, nothing harmful found · Oct 31 What we checked
- Last checked
- October 31, 2026
What Bytemania does
- Bytemania plays one-line bytebeat formulas as an instrument, the note you press setting how fast t runs.
- It ships with 30 built-in patches: 8 tuned basic waveforms and 22 classic bytebeats credited to their authors.
- KNOB1-4 move the variables a to d inside the live formula, and holding HOME moves e to h instead.
- EDIT opens the on-device editor where the keys type, FX reaches a second layer of operators, and every change compiles instantly.
- ARP builds a random formula worth hearing, and ENV clears the patch back to t alone.
- Hold SEQ to loop or ping-pong any part of a formula, from 16 up to 65536 steps.
- LFO steps through MONO, DUAL, POLY and MULTI, which plays a different formula on each side.
- Sixty-four named slots keep the whole patch, and USB-MIDI brings in notes, velocity, pitch bend and twelve mappable controls.
Its modes
- The main screen
- See the patch name, its formula in colour, the four knobs and the note, octave, glide and voice mode.
- Raster
- Watch the classic bytebeat picture, each row 256 steps of t coloured by the sample, newest at the bottom.
- Scope
- Watch the last 232 samples drawn as a waveform.
- Loop
- Hold SEQ and set the loop start, fine offset, length and mode on the knobs.
- The editor
- Type a formula with the keys and hear it compile as you go, with mistakes marked in red.
- The save screen
- Pick one of 64 user slots to store the whole patch, or clear a slot.
- The name screen
- Type a name for the slot with the keys and save it.
- The CC screen
- Map incoming MIDI controls to parameters over a min-max range, by hand or by learn.
What Les checked
Bytemania v1.2.0Scanned October 31, 2026
What we checked for
- The file is exactly the one its author published
- It's the same file we saw when this release first came out
- It opens cleanly as an FM-1 firmware, nothing damaged
- It doesn't show up on your computer as a keyboard, mouse or other input device
- It doesn't show up as a USB drive or network adapter
- Its text mentions no computer command tools, like PowerShell, Terminal or a download command
What we found
- MIDI and audio, as expected
StatusScanned, nothing harmful found
Les scans every firmware here whose file is public, and shows what it checked and what it found. A scan lowers the risk; it can't rule it out. This firmware is made by its author, not by Les or M-VAVE. Back up first, and install at your own risk. How Les scans firmware
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