DWNLO

DWNLO is custom firmware for the M-VAVE FM-1. It runs five parts - a 909, an 808, a 303, an 808 Bassline and BLIP - all playing at once, in stereo. Each part plays its own pattern. Patterns chain into a song. Knob moves can be recorded. A step can have its own sound, and its own chance of playing.

1Install

Try it first: the host simulator (host/x0x_host, built from this repository) runs the same code on a computer, from a script, with audio and screenshots as output. There is no browser emulator published yet.

Install: from a computer with Python 3, pip3 install mido python-rtmidi, then:

python3 tools/fm1_install.py build/dwnlo.fwsc

Connect the FM-1 with a USB data cable first. Don't unplug it while it's writing; when it finishes, the FM-1 restarts into DWNLO. BUILDING.md covers building build/dwnlo.fwsc, and how to run a local copy of the web installer in Chrome or Edge instead.

Update: the same way. An update keeps your project: the patterns, sounds, song and settings. Installing another firmware does not: it keeps its own things in the same memory, so coming back to DWNLO starts with an empty project. To keep it, save it to a file first (see Back up your project).

Go back: M-VAVE's own updater, M-UPGRADE, puts the stock firmware back (download the FM-1 V15 file from m-vave.com/download, choose it in M-UPGRADE).

2Getting started

A five-minute tour, from switching on to saving a first beat. When DWNLO starts, the screen shows the 909 and every part is empty.

1. Add a kick. Press black key 1 to pick the bass drum (you'll hear it), then press white keys 1, 5, 9 and 13.
2. Press PLAY. The kick plays on every beat.
3. Add a clap. Press black key 7, then white keys 5 and 13. While the pattern plays, picking a drum is silent, so you don't add a stray hit.
4. Add open hats. Press black key 9, then white keys 3, 7, 11 and 15.
5. Write a 303 line. Turn ALGORITHM two clicks clockwise to 303 and press ARP. Press OCT+: each press writes a new line. Keep going until you like one.
6. Shape the 303. Press EDIT. The knobs are now the 303's filter: KNOB 1 opens and closes it, KNOB 2 sets the resonance.
7. Add a bassline. Turn ALGORITHM one click to 808 Bassline and press ARP, then OCT+, the same way as step 5. Press EDIT to shape its tune, decay, drive and glide.
8. Add BLIP. Turn ALGORITHM one click to BLIP and press white keys 1, 7, 9 and 13.
9. Mute a part. Press HOME, then a black key to mute that part. Press it again to bring it back.
10. Record a filter sweep. Turn ALGORITHM back to 303 and press EDIT. Press REC, slowly turn KNOB 1 for a bar or two, then press REC again. The sweep now plays every time the pattern comes round.
11. Save. Press PLAY to stop, then SAVE. Everything is kept when you switch off. (DWNLO also saves by itself a few seconds after you stop; see section 15.)

Next: section 9 shows how to make more patterns and switch between them, and section 12 how to arrange them into a song.

3Controls

A button that opens a screen always opens the same one; press it again for that screen's next page. SEQ, EDIT and ARP show the part you choose with ALGORITHM.

Hold HOME for these: + REC undoes, + PLAY redoes, + SELECT sets the tempo, + a white key picks a pattern from any screen, and + a black key mutes a drum track (on the 909 or 808 screen) or a channel (on the mixer).

The white keys are the 16 steps of a page (on HOME, patterns). The black keys are the 909's and 808's eleven drum tracks, or part mutes on HOME, or a mixer channel on the mixer.

(The SEL button is labelled SCL in Felucca.)

Lists

SEL turns the screen you're on into a list of everything on it: every knob from its pages, grouped (on the 909, for example, BD: THIS TRACK and 909: ALL TRACKS), and then MORE, the settings that are on no page. MORE is where the less used settings live, such as a drum track's DRIVE and DIST or the compressor's details.

In a list, SELECT moves, ALGORITHM changes the highlighted value, and SEL runs a row with a return arrow (an action). HOME goes back. DWNLO always asks before doing anything that would lose notes: SEL for yes, HOME for no.

Undo

Hold HOME and press REC to take back your last change; the screen says what it undid, for example UNDO 909 P1. HOME + PLAY redoes it. You can go back up to 32 steps (fewer after very big changes). A step is whatever you did before pausing for a moment: a few steps tapped in a row, one turn of a knob, or a whole recording pass. Undo covers the sounds, patterns, song and knob motion, even CLEAR PATTERN and FACTORY RESET, but not the tempo or the settings. The history is cleared when you switch off.

4The screen

The top line shows, from left to right:

• the part, in its colour (909 orange, 808 red, 303 green, 808 Bassline cyan, BLIP violet), and the screen if it isn't the sound: SEQ, TB-3PO, or KEYS while a keyboard is on;
• the pattern playing, such as P3. P3 >5 means pattern 5 is coming up next. On a part longer than 16 steps, the steps the white keys show follow;
• the tempo, amber when DWNLO follows an external MIDI clock;
• a play symbol while playing and a red dot while recording. A small grey dot means there are unsaved changes.

When a button does something, the top line says what for a second, for example SAVED or P1 PASTED TO P5.

The knobs sit under a tag that says whose they are: the selected track (BD), the whole machine (909 KIT), a part's sound (303 TONE), the pattern (P3 SEQUENCE), the mixer (PARTS: 303, 909 MIX: CP), a held step on SEQ (303 STEP 5), or a p-lock (BD P-LOCK STEP 5). When a section has more than one page the tag counts them (BD (1/2)), and the dots at the end of the line are all the screen's pages, the current one lit. Settings with only a few choices show a row of small squares instead of a ring.

When you turn a knob, its value shows in large type for a second, with whose it is: a track's (BD TUNE) or a pattern's (P3 LENGTH). Settings that belong to the pattern change when the pattern does, and are copied with it; the sound stays the same whatever pattern plays.

The footer at the very bottom says what the keys do on this screen (BLACK: TRACK, WHITE: STEP). Until you first press a button it says HOLD ANY BUTTON: WHAT IT DOES.

5909 and 808

Each drum machine has eleven tracks, one on each black key:

The 909's hats and cymbals are samples, as on the original machine; every other sound on both machines is synthesized. On the 808, a track's SOUND setting switches it between tom and conga, rim and claves, or clap and maracas. On both, the closed hat cuts off the open hat.

Writing a beat. Press a black key to pick a track; while the pattern is stopped you hear it too. (While it plays, picking is silent so you don't add a stray hit; GLO > KEY SOUND = ALWAYS changes that.) Then press white keys: an empty step turns on, and a tap on a step that's on turns it off. Hold ENV while pressing white keys to place accents instead; an accent makes every drum on that step louder.

A pattern can be up to 64 steps long. The white keys show 16 at a time: OCT+ moves to the next 16 and OCT- back, and the top line shows which 16 you're on.

Muting a track: hold HOME and press its black key; again to bring it back. A muted track's row turns grey. Track mutes aren't saved, and muting the whole part on HOME leaves them as they are.

The pages. EDIT shows the selected track's sound (one page, two for the 909's kick), then KIT with ACCENT, how much louder accented steps are. A track's DRIVE and DIST are in SEL's list, under MORE. SEQ has the machine's LENGTH and RATE. SWING is on HOME, because it swings every part.

Each track's level, pan and reverb and delay sends are on the mixer: press LFO and go to 909 MIX or 808 MIX, which shows all eleven levels at once. The black keys pick a track and the knobs are its LEVEL, PAN, REV and DLY. On the 808 the alternate sounds share their track's pan, so the conga sits where the tom does.

6303 and 808 Bassline

The 303 and the 808 Bassline are both monophonic, step-written voices, and they share the same step editor, keyboard and line generator (section 7). What differs is the sound: the 303 is Open303 with Devilfish-style ranges; the 808 Bassline is a from-scratch bass voice modelled after the kit's 808 sound, with no filter section of its own.

Steps. Press a white key to turn that step on; tap it again to turn it off. To edit a step, press SEQ, hold the step's key and turn the knobs: KNOB 1 sets the note, KNOB 2 the gate (REST, NOTE or TIE), KNOB 3 the accent and KNOB 4 the slide. OCT- and OCT+ move the held note an octave. An empty step turns on as soon as you press it, so you can press, hold and set its note in one go. A slide glides from this step's note into the next one. (Holding a step on EDIT gives it a sound of its own instead: see P-locks in section 11.)

A tie holds the note before it through the step, so it doesn't play again. On the screen a tied note joins the note it holds in one long bar. Turning KNOB 1 on a tie makes it a note of its own.

Keyboard. Press REC and all 27 keys become a keyboard (KEYS shows on the top line). The notes you play are written: step by step while the pattern is stopped, live while it plays. OCT- and OCT+ change the octave. Play a key while still holding another and the voice slides between them. Press REC again to go back to steps.

Free play. To play without writing anything, press SEQ, turn SELECT to the KEYS page and set FREE PLAY to ON. The keys then play the part on every one of its screens, stopped or playing, so you can try lines and turn EDIT's knobs as you go; the top line says FREE PLAY. Nothing is written until you press REC, which records as above. Set FREE PLAY back to OFF for the steps. Each of the 303 and the 808 Bassline has its own, and both are off at power-on.

The 303's pages. EDIT has TONE (CUTOFF, RESO, ENVMOD, DECAY) and VOICE (ACCENT, WAVE, saw or square, DRIVE, SLIDE time); TUNE, VOLUME, DRIVE TYPE (off, soft or RAT) and ACCENT DECAY are in SEL's list.

The 808 Bassline's page. EDIT has one page: TUNE, DECAY, DRIVE and GLIDE.

Both. SEQ has the line's LENGTH (1-64 steps), RATE, DIRECTION (forward, reverse, ping-pong or random) and TRANSPOSE. Each part's level, pan and sends are on the mixer (LFO).

7TB-3PO

TB-3PO writes lines for the 303 or the 808 Bassline. Pick one with ALGORITHM and press ARP.

Press OCT+ to write a completely new line, or OCT- to mutate the current one (about a quarter of its steps change).

TB-3PO has two pages (press ARP again, or turn SELECT):

• GENERATE: DENS, ACCENT and SLIDE set how many steps play, are accented and slide. OCTS sets the range, from 1 to 3 octaves.
• SCALE: ROOT, SCALE (minor, Phrygian, harmonic minor, minor pentatonic, Dorian or major), OCTAVE, and MUTATE, which mutates the line by itself every 1-16 bars (or never).

These knobs don't change the line you're hearing. They set up the next OCT+ or OCT-, so your line stays exactly as it is, hand edits included, until you press one. When the knobs no longer match the line, the screen shows NEW LINE with a star. The same settings and seed always give the same line, the same one Schwung's TB-3PO module writes.

To edit the line by hand, press SEQ; to shape its sound, EDIT.

8BLIP

BLIP is a monophonic 2-operator FM voice, built for short melodic lines. It is deliberately simple: steps are on or off, with an optional accent, and nothing else - no per-step pitch, tie, slide, direction, transpose, TB-3PO, keyboard or p-locks.

Steps. Press a white key to turn a step on; tap it again to turn it off. Hold ENV while pressing a white key to place an accent instead.

A pattern can be up to 32 steps long. SEQ has LENGTH and RATE.

The pages. EDIT has SOUND (TUNE, DECAY, BRIGHT, GLIDE) and LFO (LRATE, LDEPTH, CUTOFF). The modulator envelope decays faster than the carrier's, for the bright attack; the filter is a one-pole lowpass with its own slow LFO. BLIP's level, pan and sends are on the mixer (LFO).

9Patterns

There are 32 patterns. A pattern holds each part's steps, length and rate, the swing, and any knob motion, p-locks and probabilities. Sounds, effects and master settings are not part of a pattern and don't change when the pattern does.

Each part plays its own pattern, so the 303 can play pattern 3 while the drums play pattern 7.

HOME shows patterns 1-16 as boxes, one per white key; OCT+ shows 17-32 (P17-32 appears under the boxes) and OCT- goes back. Every fourth box is numbered. In each box, a line for each part with notes in that pattern: bright where that part is playing it now, dim otherwise.

Choosing patterns

• All five parts: on HOME, press a white key or turn PRESETS. From any other screen, hold HOME and press a white key.
• One part: on that part's screen (SEQ, EDIT, TB-3PO), turn PRESETS.
• A chain: on HOME, hold two white keys at once. All five parts play each pattern from the first to the second, a bar each, then start again. Choosing a single pattern ends the chain.

While playing, the new pattern starts when the current bar ends; stopped, it takes over at once. A part that changes pattern starts again from step 1; the others carry on.

Copy and paste. Hold SAVE: the top line says P1 COPIED. Press a white key to paste onto that pattern (P1 PASTED TO P2): all five parts, as they're playing now. If the pattern you paste onto has notes, DWNLO asks first. While holding SAVE, OCT- and OCT+ switch between patterns 1-16 and 17-32.

Clearing. Hold SAVE and press REC to clear the selected part in its pattern. GLO > CLEAR PATTERN clears all five.

Muting. On HOME, black keys 1-5 mute and unmute the parts. Mutes aren't saved, except inside a song.

Lengths and swing. Parts can have different lengths, so they drift against each other. The 909's length sets the length of a bar, and the 909's pattern holds the swing, which applies to every part. Swing delays every second 16th note: 50% is straight, 75% the most.

HOME's knobs are for playing live: TEMPO, SWING, and the master's FILTER and PUMP.

10Recording

Press REC to turn recording on, and again to turn it off.

• Drums: while the pattern plays, press black keys to record hits (with REC on you always hear them). Hold ENV for accented hits.
• 303 or 808 Bassline, live: with REC on, the part's keys are a keyboard; play while the pattern runs.
• 303 or 808 Bassline, step by step: with REC on and the pattern stopped, each key you press fills the next step, from step 1. Hold ENV while pressing a key for an accent, or LFO for a slide. For a rest, hold ENV and press OCT- or OCT+; for a tie, hold LFO and press OCT- or OCT+.
• BLIP: steps are written directly (section 8); there is no keyboard or live recording.
• Knob moves: with REC on and the pattern playing, turn any sound knob (section 11).
• The song: REC + PLAY on the SONG screen (section 12).

11Knob motion, p-locks and probability

All three give steps values of their own, and all three are saved with the pattern.

Knob motion

Turn on REC, press PLAY and turn any sound knob. DWNLO records the knob on the steps where you moved it, fills in short pauses so a slow sweep has no gaps, and on playback glides from step to step.

• A knob with motion has a dot in its corner, and its ring follows the recording as it plays.
• On steps you didn't touch, the knob's own setting plays.
• Turning the knob without REC takes over for one pass of the pattern; then the recording plays again.
• To clear a knob's motion, hold SAVE and turn the knob.
• Motion belongs to a part's pattern: a part's own knobs record into that part's pattern; the effects and master into the 909's. Copying or clearing a pattern copies or clears its motion too.
• When you stop, every knob goes back to its own setting.

P-locks

A step can have a sound of its own: a higher tune on one kick, an open filter on one 303 note, a different decay on one 808 Bassline note. BLIP steps have no p-locks (section 8).

• On EDIT, hold a step that's on and turn a sound knob. That step plays the new value; the others keep the knob's. While you hold the step, the knob row says P-LOCK STEP 5, the knobs show the step's values, and an amber dot marks the locked ones. Stopped, you hear the lock while you hold the step.
• A tap still turns a step on or off: only a hold with a knob turn makes a lock. An empty step turns on as soon as you press it, so you can press, hold and lock in one go.
• To clear one lock, hold the step, hold SAVE and turn the knob.
• On SEQ, holding a step locks nothing (on the 303 or 808 Bassline the knobs set the step's note instead).

Probability

Hold a step (on SEQ or EDIT) and turn SELECT to set the chance it plays, from 100% down to 5% in steps of 5; the top line shows it (STEP 5: 50%). The dice are rolled every time the step comes round, so 50% plays about every other pass.

Keep turning past 5% for cycles: 1:2, 2:2, 1:3 and so on up to 8:8. A step at 1:4 plays on the first of every four times round its part's pattern, 2:4 on the second; nothing random about it. Each part counts its own passes, from 1 again whenever you press PLAY or it changes pattern.

• On the 909 and 808 the chance belongs to the selected track's step, so the kick and the hats on one step can each have their own.
• On the 303 or 808 Bassline a skipped step is a rest.
• A skipped drum hit sends no MIDI note.

Good to know

• Steps with p-locks or a chance below 100% have a small notch on the step grid.
• P-locks and probabilities are stored like recorded motion, one "knob" per locked setting per part pattern. There's room for 160 across all patterns; when it's full, the top line says MOTION FULL.
• Two locked steps next to each other glide from one value to the other, like a recording.

12Song

A song is a list of up to 192 bars. Each bar says which pattern each part plays and which parts are muted. To open the song, press HOME twice (HOME again comes back to the pattern).

• Write bars: press a white key. The selected bar gets that pattern for all five parts, and the next bar is selected. Pressing keys at the end of the song adds new bars.
• Edit a bar: turn KNOB 1 to select the bar, then use the other knobs to set each part's pattern for that bar.
• Mute parts in a bar: press black keys 1-5.
• Repeat a bar: on the SONG screen's second page (turn SELECT), REPEAT plays the selected bar up to 8 times (x2 ... x8 shows at the end of its row), so four bars of the same pattern are one row.
• Play the song: press PLAY on the SONG screen. The song starts at the selected bar and loops, and keeps playing wherever you go (HOME for mutes, EDIT for sounds) until you stop it. While it plays, the top line shows S and the current bar number. PLAY anywhere else plays the patterns: whatever screen you start from decides, and the top line says which (S or P).
• Record the song: on the SONG screen, turn on REC and press PLAY. As it plays, change patterns and mute parts however you like. Each bar is written into the song as it goes by, starting from the bar you started on, and the song grows if you play past its end. Recording replaces what was in those bars before.

Press SEL on the SONG screen for LENGTH, INSERT BAR, DELETE BAR and CLEAR SONG.

13Effects

There is one reverb and one delay, and every part can send to both: each part's sends are on the mixer's PARTS page (LFO), each drum track's on 909 MIX and 808 MIX. FX shows how much every part sends, and has two pages:

• REVERB: DECAY and TONE. The reverb is stereo: whatever you send it comes back wide.
• DELAY: TIME (in note values from 1/32 to a dotted half note), FEEDBACK, TONE and TAPE. TAPE at the far left (DIGI) is a clean 12-bit digital delay; turned up, it is a tape delay that wobbles, saturates and wears more the further you turn it, and can feed back on itself at high feedback.

In SEL's list, under MORE: each effect's low cut and return level, and PING-PONG, which bounces the echoes between left and right.

14Mix and master

Press LFO to open the mixer; press it again (or turn SELECT) for its four pages. The red bar on the right is the compressor's gain reduction.

• PARTS: a level and a meter for each part. Press black keys 1-5 to pick the 909, 808, 303, 808 Bassline or BLIP; the knobs are its LEVEL, PAN, REV and DLY.
• 909 MIX and 808 MIX: each drum machine's own mixer, every track's level at a glance; the black keys pick a track, and the knobs set its LEVEL, PAN, REV and DLY.
• MASTER: four knobs over the whole mix. The screen shows the output level over the last couple of seconds, so you can see the pump and the compressor working.

On PARTS, 909 MIX and 808 MIX, hold HOME and press a black key to mute or unmute that channel (a part on PARTS, a track on the drum pages). The key lights show it: the channel the knobs set is bright (blinking while muted), the others dim, muted ones dark.

Turning ALGORITHM on the mixer goes to that part's page: 909 MIX or 808 MIX for the drum machines, PARTS (with the part picked) for the 303, the 808 Bassline and BLIP.

FILTER and PUMP are also on HOME's PERFORM page, for playing live.

15Settings and saving

Press GLO for these settings, in five sections (MIDI, AUDIO, KEYS AND SCREEN, PROJECT, SYSTEM):

Saving

SAVE saves the sounds, all 32 patterns, the song, the knob motion, the tempo and the settings. A small grey dot at the top right of the screen means there are unsaved changes, and anything unsaved is lost when you switch off.

With AUTOSAVE on (the default) you'll rarely need SAVE: whenever the pattern is stopped and nothing has been touched for four seconds, DWNLO saves and says AUTOSAVED.

Back up your project

DWNLO keeps one project. To keep more, or to keep yours while you try other firmware, save it to a file on your computer and load it back later.

Back up: from the command line, with the FM-1 connected:

python3 tools/dwnlo_backup.py backup my-song.dwb

The project goes to the file you name: the sounds, all 32 patterns, the song, the knob motion, the tempo and the settings. DWNLO can keep playing, but changes it hasn't saved yet go in the file only when it's stopped.

Restore:

python3 tools/dwnlo_backup.py restore my-song.dwb

Stop DWNLO first. DWNLO checks the whole file before anything changes. Then its screen asks RESTORE FROM USB? Press SEL to restore, or HOME to keep what you have. The backup replaces the project on the FM-1, and DWNLO loads it at once.

python3 tools/dwnlo_backup.py info my-song.dwb shows what a backup holds. A backup made with an earlier version of DWNLO restores in a later one. A local copy of the web installer also has a backup page, in Chrome or Edge.

16MIDI and USB audio

When connected over USB, the FM-1 shows up as a MIDI device called "DWNLO FM-1".

DWNLO takes MIDI from USB and from the FM-1's TRS MIDI IN jack, both the same way. Each part listens on its own channel; these are the defaults:

GLO sets each part's channel (909 MIDI CH and so on), or OFF to ignore its notes, for example when another box sends you its clock with notes on the same channels. DWNLO can also send MIDI: clock and start/stop when CLOCK OUT is on, and the patterns as notes on each part's channel when NOTES OUT is on.

While DWNLO follows an external clock, the tempo on the top line is averaged over about a second, so it doesn't flicker with every clock.

USB audio

Over the same USB cable, the FM-1 also shows up on a computer as an audio input called "DWNLO FM-1": two channels at 44.1 kHz, with no driver to install. It carries what the headphones hear, after VOLUME, in stereo.

Record it in any audio app, or monitor it live through one. The FM-1 keeps its USB audio in step with the computer's clock, so live monitoring doesn't drift or drop out. The first moment after an app opens the input can click while the FM-1 settles.

Screen reader

DWNLO can tell a screen reader what its screen shows, over the same protocol as fm1-reader. It reads out the page you're on and its knobs, a knob's value as you turn it, list rows with their place ("clock out on, 1 of 20"), help cards, questions, steps you put on or off, play and stop, and every message, in words: "bass drum tune 37", not "BD TUNE 37". The FM-1 says nothing until a reader connects, so a DAW on the same cable never sees it.

17Troubleshooting

Update mode: hold OCT- and OCT+ together for five seconds. A countdown appears; let go before it ends to cancel.

Calibration: if a button or knob does the wrong thing, hold OCT- and OCT+ while you switch the FM-1 on. The screen then asks you to press each button and turn each knob in turn.

After a crash: DWNLO shows a red DWNLO CRASH screen and restarts by itself a few seconds later. The next start shows RESTARTED AFTER A CRASH and an address (PC ...) for a moment. If you report the problem, include that address and what you were doing.

Safe mode: if DWNLO crashes twice in a row while starting, it starts in DWNLO SAFE MODE instead. There's no sound, but USB works, so the installer can reach it: reinstall DWNLO, or put the stock firmware back with M-UPGRADE. Press PLAY to try starting DWNLO normally again. If even safe mode fails twice, the FM-1 drops into the chip's own update mode, and only the rescue below can reach it.

Recovering an FM-1 that won't start

An FM-1 that keeps crashing starts in safe mode (above). If it's stuck beyond that, a script can put M-VAVE's firmware back, on a Mac, with the USB cable you already have:

Open Terminal, paste this line and press Return:

bash -c "$(curl -fsSL https://raw.githubusercontent.com/jeffwebb-to/dwnlo/main/tools/fm1_rescue.sh)"

1. If a window asks to install the command line developer tools, click Install. When it has finished, paste the line again.
2. If it asks for a password, type your Mac password (nothing shows as you type) and press Return.
3. When it says it's waiting, plug the FM-1 in and switch it on. It crashes and goes blank, and the script catches it. It checks the chip, saves a backup of the FM-1's memory in the fm1-rescue folder in your home folder, and asks before it writes anything.
4. Type yes and press Return. Don't unplug anything until it says it's restarting the FM-1. The FM-1 then starts into its original firmware, and you can install DWNLO again from there.

The script downloads M-VAVE's FM-1 V15 firmware and JieLi's flash loader, and checks both against known fingerprints. It writes only the firmware area of the memory, never the bootloader or the FM-1's own settings, and checks everything it writes. Running it again is always safe. If the FM-1 never shows up at all, Felucca's FM-1-transporter (a small RP2040 board wired to the USB lines) can still reach it.

18Parameters

Drum settings range from 0 to 127. DIST, the distortion type, can be DIODE, CLIP, SAT, BFZ, PDIST, FOLD or CRUSH. PAN goes from L64 through C (the middle) to R63.

Each track's Level, Pan, Rev and Dly are on the mixer (909 MIX, 808 MIX); its Drive and Dist are in SEL's list; the rest are its sound pages.

19Credits

DWNLO is free software under the GNU General Public License, version 3. If you share the firmware, you must also share its source code.

• The platform (hardware layer, USB, update loader, installer and storage) is from Felucca by Leo Kuroshita, Hügelton Instruments.
• The 909 is from 9W9 by athousanddetails, which is based on ER-99 by Matthew Cieplak. Its hat and cymbal samples are ER-99's.
• The 808 is from 8W8 by athousanddetails.
• The 303 is from schwung-303, built on Open303 by Robin Schmidt (MIT licence), with extensions based on jc303 and dm-Rat.
• TB-3PO is from schwung-tb3po, which comes from the Phazerville Hemisphere Suite.
• The 808 Bassline and BLIP are DWNLO's own, built for this fork.
• The fonts are Barlow Semi Condensed and Terminus (SIL Open Font License).