One thing I haven't seen much discussion on is the audio and how it is done - how are you getting this off the board? Is it just tapping analog lines off the board and going into ADC for convenience of having audio with the picture? Or is it actually a direct digital output like the picture is now?...
I have a question about the upscaling that I believe has not been answered. Are you including an option for integer multiple upscaling? Similar to emulators like retroarch, where it upscales to just a multiple of the internal resolution, and leaves black bands around. Some people will not like it, ...
DId you ever find what was the problem with your N64 crashing at random times, like a 3rd party expansion pak? Anyway, there are several things this could be 1. Perfect storm of SD incompatbility You can test this by loading a skinned background. Will need Expansion Pak. Copy "background.jpg" <100KB...