I bought a few of these N64 Advanced boards from https://retrogamerstuff.com/. These are a great solution for N64 VGA as the UltraVGA's aren't easy to get your hands on. If you want to build your own N64 Advanced board they are open source and can be found at https://github.com/borti4938/n64rgb. I've attached the official PDF guide to this thread for more information. I made this condensed guide to save time because the official assumes you will be installing into a...
N64 Advanced VGA
N64 Advanced VGA