I tried to port Oberon, but was not yet successful in getting the compiler fully debugged. I also need to finish the system image linker so I can generate bootable images. For this reason, I pushed ahead with putting Forth in firmware.
However, I do intend on completing Oberon at some point (or trying to solicit help in that area; porting OSes is most definitely NOT my strong suit). Instead of putting in ROM, though, it'll be bootable off of SD card.