How can I write my own Extension Module?

[c64emulator]

Is there some information about writing my own extension module?

[JanPetterMG]

Hi! There isn’t any dedicated documentation yet, but writing an extension module isn’t too hard once you get familiar with the structure. The exact steps depend a bit on what you want to build and whether it’s for personal use or something you’d like to share upstream.

For a simple, personal extension you can start by:

• Adding your code in firmware/include/extensions/CustomExtension.h and firmware/src/extensions/CustomExtension.cpp.
• Including and initializing it in firmware/include/services/ExtensionsService.h.

If you plan to contribute it back, there are a few extra pieces—like adding a toggle in firmware/include/config/extensions.h, updating firmware/src/services/ExtensionsService.cpp, and possibly making changes in the webapp/ UI if it needs controls there.

It may not be the cleanest example, but you could check out the changes made in #26

If you’re new to coding, feel free to open a draft PR even if it’s rough — I’m happy to give pointers and help you get started.