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Split kit and keys; KEYS GEN with MOTIF, 303, TURING, ARP

- genome(seed, salts) now has three parts with their own RNG streams:
  shared (steps, form, swing, arc, layback, fill odds, phase offset),
  kit (density, frame, accent cycle, free snare) and keys (scale/root,
  progression, motif, hocket, bass tone, note lengths, range). ROLL KEYS
  now renews the harmony too; ROLL KIT leaves the keys alone.
- Keys generators share one signature and can fix note lengths:
  MOTIF (the old line), 303 (acid bass, answers in the rests, drone or
  silent pad), TURING (8/16-bit shift register, DRIFT flips bits, 16-bar
  window), ARP (triad/7th arpeggio, roots on kicks).
- Pages: KIT GEN, KEYS GEN; ROLL shows KIT / KEYS; slots keep both gens.
- Flash record v3 (old settings ignored). Bring-up golden checksums updated.
- C port matches; host test and ASan/UBSan pass.

Intended music change: every seed sounds different (genome split, new
generators). Vectors regenerated with npm run vectors; the case grid now
crosses all kit and keys generators, with TURING runs past its window.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

2026-10-11 21:50:41 +03:00

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Controls

 ┌──────────────────────────────────────────────────────────────┐
 │ [ 5110 screen ]     (ENERGY)            [KICK][KICK2][SNR] RUN/STOP
 │                     (DRIFT)             [HAT ][HAT16][PRC][GHST]
 │ (ENC)               [ SEED ]            [BASS][MEL A][MLB][PAD ]
 └──────────────────────────────────────────────────────────────┘
   back wall: USB · MIDI IN · OUT KIT · OUT SYNTH

To-scale layout and drill list: hardware/panel.md.

Buttons and knobs

Control	Does
SEED	A new random seed. The old one goes into the history (last 16).
RUN toggle	Start / stop. Stop sends note-offs, All Sound Off (CC 120) on the learned kit channels, and CC 120 and 123 on the synth channel.
ENERGY	Density. See concept.
DRIFT	How loose and changeable. See concept.
Track button, tap	Track on / off.
Track button, hold (> 250 ms)	Flips the track only while held: a quick drop-out or punch-in.
Encoder, turn	Choose the page.
Encoder, push	Edit the page (the value line inverts). Turn to change, push again to leave.

Option (bench setting in the simulator): track changes wait for the next bar line.

Screen

The Nokia 5110 has 84 × 48 pixels:

Top line: the page name.
Second line: its value, inverted while you edit it.
Below: a 4 × 3 map that mirrors the buttons. The top-right cell is RUN: filled while playing.
- filled = on
- outline = off
- flash = hit
- dot = a kit track not learned yet
- blinking = a change waiting for the bar line

Pages

Page	Edit with the encoder	Push
SEED	scroll back through the last 16 seeds (`-1`, `-2` …; `*` = re-rolled)	load the shown seed
KIT GEN	EUCLID, SKELETON, SUBDIV, AUTOMATA, AMENIZER	done
KEYS GEN	MOTIF, 303, TURING, ARP (see Concept)	done
ROOT	AUTO, C … B. AUTO shows the seed's pick	done
SCALE	AUTO, then the 21 scales (see Concept). AUTO shows the seed's pick	done
BPM	tempo	done
SLOT	8 slots for seed + salts + kit and keys generators (not root or scale)	push = load, long push = save
ROLL	KIT or KEYS	push re-rolls just that half, then goes back to page select. KIT: a new drum part over the same keys. KEYS: new chords, scale (on AUTO), motif and patterns over the same drums
LEARN	—	push, press a kit track button, hit the pad on the sampler or drum machine. Push again to cancel.

Simulator keys

Key	Does
1 … 0, -	track buttons KICK … PAD
Space	SEED
← →	encoder turn
Enter / Shift+Enter	encoder push / long push
R	run / stop

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