This H8/3644 MCU based pcb would normally come packaged with a Konami Windy II cabinet for JVS controls. Konami also had this idea to ship this pcb with NBA Play by Play four player kits (not really the best idea considering should the pcb fail, players 3 and 4 won't work). This is an instance where a game would use both Jamma AND JVS inputs. Konami also developed a "JVS to Jamma" pcb using that same MCU.
I can also confirm that same pcb is used in Fighting Bujutsu from the manual and pcb's matching connector numbers. I guess the unemulated H8/3644 could explain why inputs in Fighting Bujutsu don't fully work.