I am trying use a MPU-200 board in my Nugent machine that has a bad MPU-100. I would like to use the roms from the original board and re-jumper the MPU-200 to use them. The question is what type of chips are the original Nugent masked ROMs? I assume they are 9316's but if that is the case, there is only two, (a black one in U2 and a white one in U6), and the chart below I got from pinwiki, does not cover that situation. Do I use the 2716 two ROM configuration or something else? If anyone could shed some light on this issue, it would be greatly appreciated.