The ‘CUS99′ (simply silkscreened ’99’) is a custom IC used on Namco arcade PCBs.It’s a 16 pin SIL component covered with a brownish coating : It can be found on pre-System86 (Pac-land, Sky Kid, Gaplus, Dragon Buster and other boards..), System86 (Rolling Thunder and other games on same PCB layout) and System 1 hardware.From the … Continue reading Namco ‘CUS99’ reproduction