This firmware does not show its knob positions. Update it on the Firmware tab.
| CC | Section | Control | Values | What it does |
|---|
Every MIDI CC the synth answers, on USB and DIN MIDI. It listens on the channel set on Settings › Synth, or on all channels when that is Omni.
The manual for OddSID and this editor.
The editor needs Web MIDI with SysEx, on a secure page (https:// or a local file), and the synth on USB. Without them, the browser synth plays instead.
| Browser | Works | Notes |
|---|---|---|
| Chrome 43+ | Yes | Windows, macOS, Linux, ChromeOS and Android. Recommended. |
| Microsoft Edge 79+ | Yes | Windows and macOS. |
| Opera 30+ | Yes | Desktop; Opera Mobile 80+ on Android. |
| Firefox 108+ (desktop) | Yes | The first time, Firefox asks to install a site permission add-on for this page. Accept it to allow MIDI and SysEx. |
| Samsung Internet 4+ | Yes | Android. |
| Brave, Vivaldi, Arc | Yes | Chromium based. Brave's Snap and Flatpak builds on Linux lack MIDI; use its own package. |
| Safari (macOS) | No | No Web MIDI. A third-party Safari extension adds it, untested here. |
| Any browser on iPhone or iPad | No | iOS browsers all use Safari's engine. |
| Firefox for Android | No | No Web MIDI. |
Android phones and tablets need a USB-C or OTG cable to the synth; tested on desktop Chrome so far. Support data from caniuse.com, August 2026.
Without OddSID on USB, the editor plays the synth itself: the synth's own firmware runs in this page, so every page works as it does with the hardware. The button top right says Browser synth; browsers start the sound on the first click or key press on the page.
Tunes play through this project's reSID16 engine (GPL-2.0-or-later), at the tune's PAL or NTSC clock and SID model. PSID tunes with up to two SID chips play; RSID tunes do not.
Open the editor in Chrome or Edge to update the synth.
Put what is saved on this synth (its table slots) and in this browser (the favorite and hidden instruments and tables) into the repo, so the firmware and this page are built with them. One file carries both, and one command imports it.
oddsid-export.json, anywhere you like: Chrome and Edge ask where, other browsers put it in Downloads. It holds all 60 table slots and Instrument mode's three banks and drum kits as the synth has them now (each slot its saved table, else the built-in one) and the favorite and hidden lists of instruments and tables. Without MIDI it holds only the lists.python3 tools/embed_sidwizard_catalogue.py ~/Downloads/oddsid-export.jsontools/table-slots.json, tools/instrument-curation.json, tools/table-curation.json, tools/instrument-banks.json and tools/drum-kits.json from the file and says what changed, then regenerates the firmware's sid_wizard_table_slots.h, sid_wizard_favorites.h, instrument_banks.h and drum_kits.h and this page. A file it cannot use changes nothing.make upload): its built-in tables, the instruments CC 84 plays and the banks and kits a synth starts with are now the exported ones. Push to RC1 to put this page on oddsid.malm.audio.ADSR — four SID nibbles: attack, decay, sustain and release. Each digit ranges from 0 to F. It travels and saves with the WF table, and the synth plays it while that WF table is selected; moving a VCA knob takes that one stage over until another WF table is picked.VIBR = IFDD — I is depth 0–F (8 cents per step, up to ±120 cents). F is the number of table ticks per half-cycle: 1 is fastest and larger values are slower. DD is the delay before vibrato begins, in table ticks. Either I=0 or F=0 disables vibrato. Example: 6406 = ±48 cents, 6 ticks per half-cycle, start after 6 ticks.SPD — bits 0–5 are the WF/ARP delay in 20 ms frames between rows, which the panel Table Speed knob plays at its centre position and makes faster clockwise or slower anticlockwise. Bit 6 lets the pulse table and bit 7 the filter table run at the instrument's multispeed (SID-Wizard's speed bits); at multispeed 1 they make no difference.10–FD writes SID control/waveform; bit 0 is gate. 30 clears gate and 31 raises it. Gate-off starts ADSR release, so an earlier note may keep sounding briefly. Common values: 11 triangle+gate, 21 saw+gate, 41 pulse+gate, 81 noise+gate. 00–0F waits that many ticks. FE 00–1F jumps to the row in ARP; FE FE uses the WF-knob waveform with gate off; FE FF uses it with gate on. Both WF-knob commands return pitch to the incoming MIDI note. FF stops.00–5F is an upward semitone offset, E0–FF is a signed downward offset, 7F reads one Pitch-table offset and advances the WF row, 80 keeps the current pitch, and 81–DF selects an absolute MIDI note. A single 41 7F 00 WF row holds the first offset; add FE 00 00 to loop back for the next one. DT/AUX sets fine detune; FF keeps its previous value.8x–Fx sets an absolute 12-bit pulse width from x:VAL. 00–7F repeats a signed VAL delta that many ticks. KT is signed keyboard tracking relative to MIDI note 60. FE jumps to the row in VAL and FF stops.8x–Fx sets filter mode/resonance; VAL × 8 sets cutoff. High nibble 9=LP, A=BP, C=HP; low nibble is resonance. 00–7F repeats a signed cutoff delta. KT tracks MIDI note 60. FE jumps to the row in VAL and FF stops.O1/O2/O3 are signed semitone offsets. A WF table with an ARP 7F row reads one each time that row plays; beside a WF table without one, or with WF Off, they run by themselves, one per 20 ms frame at the Table Speed centre (1/8× to 4× as it turns), added to the WF pitch, and loop where the WF table would call them again: 7E goes back to row 00, NX FF stops. Use key corrects only these results to the nearest note in the chosen major or natural-minor scale; equal-distance notes move down. NX selects the next row; 7F/FE loop and 7E/FF end.64K RAM SYSTEM HIGH VOLTAGE SID COLLECTION
READY.
Tune info
Open the monitor while playback is running.
Connect the synth to see stream diagnostics.
Instrument ripper · 0 captures
Captures instruments while a tune plays. Stop playback to analyze or make an instrument.
↑/↓ selects a capture, Enter auditions it.
Enable capture, then play a tune.