Firmware v required.
This configurator targets the latest PICO9918 firmware. Update your
device to v before applying a
generated config — older firmware may ignore these settings or
reset the device to defaults.
Get the latest firmware →
Main
Note: Controls which clock signals are output on pins 37 and 38.
Select the VDP chip model that matches your original hardware for correct clock behavior.
Output
Diagnostics (Optional)
Warning: Diagnostic modes are for debugging purposes and may affect performance.
Palette (Optional)
Customize the TMS9918A color palette. Color 0 (transparent) is always black.
How to Apply
The generated UF2 contains only your settings — not the firmware itself.
Drag and drop it onto your PICO9918 the same way you'd flash firmware (hold BOOTSEL while
connecting USB, then copy the file to the RPI-RP2 / RP2350 drive).
Your existing firmware stays in place; only the configuration block in flash is updated.
If you've already flashed firmware on the device, applying a config UF2 won't downgrade or replace it. To update firmware itself, grab the latest release UF2 from GitHub.