Simple Emulator

[Angeljruiz]

I want to start to create a simple emulator - a gamebody advance emulator
Honestly, my skillset probably wont allow me to ever actually finish this project - or even get close to a workable version - but i want to atleast try for the learning experience.
Could anyone point me in the right direction?

Edit: Actually, id like to start with a NES emulator :p
I know this project is HUGE, but i mean the only thing computers do is alter ram right? How hard could that be with a basic system such as a NES....