Earl's Long Lost Brother,
I have been in the process of reviving some dead N64 games. One of the ones was a Goldeneye that would not boot. I swapped the mask rom to a NBA Live 99 cart that would boot. After doing, Goldeneye booted up fine. The only other chip in the NBA board was the CIC-NUS-6102 security chip, which I assume went bad on the original board. Is it common for these things to go out ? Also are there any other sources for them besides harvesting them from sports games ?