I've run into a strange problem with my TriStar. N64 and SNES games run perfectly, w/o any problems, but when I load an NES game the controller doesn't function correctly.
For example, after loading Super C, none of the buttons function other than A. However, upon pressing A I am taken to the Sound Test menu. To get to this menu you would normally have to press A + B + Start. So, it appears that the system thinks that B + Start are being held down.
I had just been playing Super C earlier in the day and had no controller issues.
Any ideas as to how this could be fixed or what the problem is?