I've been looking into coreboot a bit since I've been toying with the idea of playing with an old Thinkpad.
Trying to look at compatibility, I found it interesting to see "82443BX (440BX)" listed in the supported Northbridge list for v4, which happens to be the same as the CUBX-L motherboard I have.

I tried to follow the support list for this board, and it seemed like it might actually work. The southbridge (82371EB (PIIX4E) ) is listed as supported, and the Super I/O (W83977EF) is also on the list as working.

This has left me wondering if it'd actually work on the CUBX-L. I've been looking at getting a CH341a for fun, but I'm not very experienced with the project or the programmer. I was curious if anyone has tried putting coreboot on one of their vintage motherboards, wants to share experiences, or if anyone more experienced may know if I'm missing anything before going down that rabbit hole.