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YM2149 Synth

A Teensy 3.2 MIDI Synthesizer project for the vintage YM2149F software controlled sound generator chip.

timothy-lambTimothy Lamb
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The Yamaha YM2149F is a 3 voice software-controlled sound generator chip that was used in classic computers from the 1980s such as the Atari ST series. Also known as the AY-3-8910 before Yamaha gained licensed use of the chip with some minor modifications, most notably a higher rate & resolution volume envelope table. You can read more on the Wikipedia page.

This project's aim is to create a full fledged self contained multi-timbral MIDI synthesizer (via USB and hardware MIDI) utilizing several Demoscene & chip music tricks to enable a broader sound pallet other than basic square waves by use of software control via Teensy 3.2

Currently most of the information including source & schematic is located on the Github page in the link section. :)

  • 1 × YM2149F YM2149F chip. Obtained from EBay or China outlet.
  • 1 × Teensy 3.2
  • 1 × ECS-100AX-020 Electronic Components / Misc. Electronic Components
  • 3 × 1K ohm resistors
  • 1 × 6n138 optoisolator

View all 10 components

  • Current project status

    Timothy Lamb • 09/05/2016 at 18:24 • 0 comments

    Code is completed and working well except for SYSEX patch editor and doc blocks (code comments). Currently working on getting non-bodged board design into KiCad. Next step will be adding MIDI out and thru, as well as a button encoder & LCD for patch editing.

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