Yes it's a modified Chiriro IO board to supply 5V and 3.3V power to Model2/3 board and process the sound at the same time. RGBS signal and digital IO are passed through JAMMA edge.
Problem solved. There are actually different filter boards for different games. After acquiring a new filter board . All fighting games work perfectly now.
Could you pkease add UG.enc file into the software package? According to the instructions, an UG update is needed sometimes before upgrading the firmware.