Native SEGA music tracker targeting YM2612 and SN76489 sound chips. Under active development. Tested under emulation via Genesis Plus as well as PAL and NTSC SEGA Mega Drive, Genesis and Nomad via flashcart.
Two headline features this release, both hardware-verified.
GROUP — one line, three voices
A TONE instrument played on T1 can now drive T2 and T3 for fat sounds from a single melody line:
- UNISON1/2 — detuned unison (±1/±2 on the tone register)
- FIFTH, POWER (fifth + octave), OCTAVE1/2
- CHORD — the
Ccommand sets the T2/T3 semitone offsets (high nibble T2, low nibble T3; latched)
T2/T3 follow T1's envelope/sweep/vibrato, with RD1/RD2 to pull their levels back. See MANUAL §5.
Region-aware playback (OPTIONS)
The region setting is split into VIDEO (refresh rate → tempo + display mode) and CLOCK (sound-chip crystal → pitch). AUTO detects the console, and the two are independent — so a PAL-60 mod (60 Hz video + PAL crystal) plays both in time and in tune. PAL, NTSC and modded consoles are all covered.
Also
- Instrument patcher shows the patch index in hex (matches the console).
- PSG squares standardised to T1–T3 across the docs and tools.
Full details in CHANGELOG.md. Flash genmddj-v0.14.bin to a Mega Drive flashcart or open it in an emulator.