Custom Zoom ZDL effects
Custom effects (ZDL) for Zoom pedals of the MultiStomp / G1on / B1on family.
| Effect | Screen | Category | What it is | Demo | Download |
|---|---|---|---|---|---|
| DrumBox |  | SFX | Drum machine: 150 beats, 150 fills, 22 kits, songs of two sections | Video | Releases |
More effects will follow.
Pedals
These pedals use the ZDL effect format (.ZDL files):
| Pedal | Firmware | DrumBox |
|---|---|---|
| Zoom G1Xon | 1.21 | Works (all features tested) |
| Zoom G1on | — | Untested |
| Zoom B1on | — | Untested |
| Zoom B1Xon | 1.30 | Works (all features tested) |
| Zoom MS-70CDR | 2.10 | Untested; the toolchain's main target (other custom ZDLs run on it) |
| Zoom MS-50G | — | Untested |
| Zoom MS-60B | — | Untested |
Not supported: the newer pedals that use .ZD2 effects instead of ZDL
(MS-50G+, MS-60B+, MS-70CDR+, G1Four / G1XFour, B1Four / B1XFour,
A1Four / A1XFour, G3n / G3Xn, G5n, B3n, ...).
Reports for other pedals are welcome. Please open an issue with the pedal, firmware and what happened.
Use at your own risk. Custom effects run code on the pedal's DSP. A bad effect can freeze the pedal when it is selected; power-cycle it and delete the effect. Keep a backup of your pedal's effects before installing anything. This project is not affiliated with or endorsed by Zoom.
Install
Download an effect's .ZDL from the Releases page (or
use dist/). Each effect's README gives its category and how many free
flash blocks it needs.
Install it like any other effect with Zoom Effect Manager 2: add the ZDL to its custom folder and write it to the pedal. Or you can still use my old Zoom Firmware Editor: add the ZDL to the pedal's firmware updater file and run the updater.
Building
You only need this to change an effect.
- TI C6000 Code Generation Tools: the standalone 8.3.15
(ti.com/tool/C6000-CGT) or 8.5.0.LTS
from Code Composer Studio 20.x.
build.pylooks atTI_CGT_ROOT, then atC:/ti/.... - Python 3.8+ with Pillow; numpy only for fitting new drum samples.
pip install -r requirements.txt
Each effect has its own build.py; see its README for the commands.
| Path | What |
|---|---|
src/drumbox/ | DrumBox: DSP (drumbox.c), beats and fills (patterns/patterns.json), kits (kits.py), drums (drums/), build and preview scripts |
build/ | The linker that turns the TI object file into a ZDL, based on repeat98's, with additions (see its header) |
tools/ | Experimental G1Xon USB file transfer, used during development (not for general use yet) |
docs/HARDWARE-NOTES.md | What was learned on the hardware: load limit, _init, knob ranges, DSP load, ... |
docs/CROSS-PEDAL-ZDL-SUMMARY.md | What one ZDL needs to run on both the MS pedals and the G1on family |
dist/ | The current builds of the effects |
Inspiration and documentation
These effects stand on the work of these projects:
- repeat98/ZoomMultistompZDL: a ZDL toolchain (TI compiler + reverse-engineered Python linker) with ABI documentation and Airwindows ports for the MS-70CDR.
- themanro/ZoomMultistompZDL: a fork of repeat98's toolchain with many custom effects and a browser patch editor that also installs effects over USB.
- ELynx/zoom-fx-modding: early ZDL reverse engineering (format, screen images, DSP loop) and the first hand-written custom effects.
- ELynx/zoom-fx-compressed: Zoom's stock effects with debug info stripped, so they take less flash.
- matujuice/zoom-ms-zdl-effects-pack: custom effects for synthesizer use on MS pedals.
- matujuice/zoom-ms-midistomp: custom firmware for MS pedals that adds MIDI control and MIDI clock.
- Leemuzhko/HYBRID-IR: a desktop app that makes cabinet IR effects from WAV impulse responses without the TI compiler.
- Leemuzhko/Zoom-ZDL-FX: ready-made ZDL effects (IR cabinets, IR loaders, amps, a synth).
- zisonzishen0415-stack/b1on-firmware-reverse: B1on / G1on firmware reverse engineering, with a Ghidra module for the C6000 DSP.
- shooking/ZoomPedalFun: tips, SysEx scripts and tools for many Zoom pedals.
- mungewell/zoom-zt2: effect list editing and file transfer for the newer (ZD2) Zoom pedals.
- thammer/stomphacks: a C-to-ZD2 pipeline for custom effects on the MS Plus pedals.
- Ziddle: an emulator that runs ZDL and ZD2 effects, with readers for Zoom's file formats and firmware images.
Licence
MIT, see LICENSE. Third-party code and the LineSel handler blob are listed in THIRD_PARTY.md.