SIDLogue
Firmware for Nu:Tekt NTS-1 digital kit mkII (Korg)
Oscillator unit for the NTS-1 mkII that emulates the Commodore 64 SID chip, with three internal voices, combined waveforms, hard sync, ring modulation and chord modes.
- Distribution
- Prebuilt image you flash yourself
- License notes
- GitHub reports GPL-2.0. The README and source headers state version 2 or later, as a derivative of FastSID from VICE.
- Source
- github.com https://github.com/paul-mcculloch/sidlogue
- Homepage
- github.com https://github.com/paul-mcculloch/sidlogue
- oscillator
- synth
- chiptune
- sid
- commodore-64
- emulator
- nts-1-mkii
- open-source
Description
SIDLogue is an osc unit adapted from the FastSID code in VICE. It offers saw, triangle, pulse and noise waveforms plus triangle+pulse and saw+pulse blends, sync or ring modulation between its three voices, detune, glide, an arpeggiator rate and chord shapes including a touch mode that builds a chord from notes played together. It has no filter or envelope of its own and uses the NTS-1 mkII filter, EG and LFO. Knob A is shape and knob B is grit. The README lists known limitations, such as no 6581 or 8580 model selection and no digi-sample playback, and also builds a browser simulator.
Install notes
Install the .nts1mkiiunit from the release with KORG KONTROL Editor. The README notes the unit relies on the NTS-1 mkII filter and EG, so set the filter cutoff up and the EG to ADSR if no sound is heard.
Version history
| Version | Date |
|---|---|
| v0.1.88 | 2026-08-02 |