Supersoniqs Modulon
This page was last modified 01:13, 8 March 2018 by Sander. Based on work by Mars2000you and Gdx and others.



The SuperSoniqs Modulon is a 4 Port Slot Expander made and sold by Supersoniqs.


Modulon - overview
Modulon - backside
Modulon - left side
Modulon - right side
Modulon - slotconnector
Modulon PCB


  • It works with the PlaySoniq cartridge (Up to 4 MB memory, all other functions supported*)
  • Has it own 3.58 MHz crystal (clock) to support (audio) cartridges in overclocked systems
  • Can be stacked with additional Modulons for extra slots. The second expander (and up) will configure itself into a I/O expander.
  • Comes with a 3D printed cartridge enclosure
  • Supports an external AC Adapter (5V)
  • Uses standard components for future modifications or repairs
  • The three top slots are on/off switchable
  • Compact design
  • Gold plated contacts
  • Busdir support
  • Modulon has separate volume adjusters for all four slots

[*] if you want to use ROMLOAD with Playsoniq inserted in Modulon, you first have to execute PSQSET /ML1 /S and reset your computer. This setting is kept until computer is turned off (reset protected). PSQSET can be found over here

Known issues

  • Right now Modulon can only be used with backside cartridgeslots (for example with Philips NMS 8245 / Panasonic MSX turbo R) or side cartridgeslots (Philips NMS 8250/NMS 8255/NMS 8280).
Modulon - upright use