I wanna program a game and put it onto a NES/Genesis cartridge. Please Help.

[cloud1161]

KungKras said:
You'll have to use Assembly I believe. And you'll need the documentation for the all the chips.

Is Assembly a language or script or something like that?  And do you know how to go about getting the documentation for the chips?   And I am not sure if this is possible, but if is it possible to make your own cartridge if you got all the parts?