By the way, I was hoping that Tryom Electronic chess had similarities with SciSys's early F8 chesscomputers (like Chess Traveler/Pocket Chess). But the rom isn't similar to it.

The reason I hoped for it, is because I assume Tryom was affiliated with SciSys.
See here: https://www.chessprogramming.org/MCC_1980
Tryom represented SciSys/Novag for the Super System III.

And also this one:
https://patents.google.com/patent/US4223893
It's a patent for a backgammon computer with sensory board (filed in 1975! 1 year after the 6800 cpu was introduced)
After Tryom went defunct, the rights were transfered, see: "1983-08-15 Assigned to SCISYS-W, LTD."