~/log/audio-and-wearables/p600fw-prophet-600
p600fw
Sequential Circuits Prophet 600 synthesizer (1982)
open repo ↗ github.com
- ai
- none documented
- evidence
- public
- reviewed
The Prophet 600 was the first MIDI synth, and its Z80 operating system is famously sluggish. gligli replaced the CPU and the firmware with a Teensy++ that plugs into the Z80 socket: a new voice assigner, a MIDI-clocked arpeggiator, unison detune, SysEx patch dumps, and knobs that send MIDI.
- ai
- No AI use documented.
- caveats
- A hardware modification of a vintage synth: a lightly modified Teensy++ replaces the Z80. The toolchain references date from 2012. Version 2.0 is the last stable release; 2.1 never left release candidate. Dozens of open issues.
- evidence
- Public code, GPL-3.0 per the README, about 50 stars, maintained since 2013.
- github
- 52 stars, last commit 2026-04-13. As of 2026-11-15. Stars show interest, not safety.
Code or detailed materials are published. Says nothing about safety, quality or maintenance. Not tested by unshittify. Added by unshittify. Wrong or out of date? Send a correction.