Need some guidance...

So, I don't know if this is the best place to post, but I am hoping that it is. :~

I am planning on building a custom board, similar to an Arduino, but I think it will be a MIPS chip. I am trying to more or less build a Nintendo 64 from scratch with a few extra features such as being able to download games via WiFi, HDMI output and and emulators for other retro systems: NES, SNES, GameBoy, etc. I would like to see if anyone could point me in the right direction in order for me to learn a bit about building my own board. I have some basic circuitry knowledge and I believe that I understand what components I will need: Power Supply, Ram, Rom, CPU, HDMI Encoder?

Any help is greatly appreciated.
If all goes as planned, I will have the OS and Emulator source code on GitHub, Schematics and a Detailed Build on Instructables, and a demo video.

I just dost know where to start.

Thanks.

The best place to start would be on a forum that deals with the MIPS chip. This is an arduino forum.

Honestly, Regardless of what chip architecture I use, I still need to know how to build a board.

chaser53:
Honestly, Regardless of what chip architecture I use, I still need to know how to build a board.

But designing a board for a specific chip requires the specific info, needs, and functions of that specific chip. Unless your question is about what software PCB layout program to use or recommending a PCB house that will take your design files and create the board, you are probably much better off seeking out people and forums that deal with MIPS chips.