Okay, I'm doing my homework here. Do I have the following correct?
1- An NES game consists of a PRG and a CHR file. The PRG contains the game code, while the CHR contains the tiles used in the game's sprites.
2- A physical NES game has three chips on the PCB: the PRG, the CHR, and the CIC.
3- Not all games have a seperate CHR section. Zelda is an example.
Okay, so I think I have all that correct. If so, it should be possible to make a basic graphic hack of a given game just by changing only the CHR chip, right?
Now, on the other hand, for those games that don't have a seperate CHR section, how do the physical carts still have three chips?
(Trying not to be TOO newbieish!)
1- An NES game consists of a PRG and a CHR file. The PRG contains the game code, while the CHR contains the tiles used in the game's sprites.
2- A physical NES game has three chips on the PCB: the PRG, the CHR, and the CIC.
3- Not all games have a seperate CHR section. Zelda is an example.
Okay, so I think I have all that correct. If so, it should be possible to make a basic graphic hack of a given game just by changing only the CHR chip, right?
Now, on the other hand, for those games that don't have a seperate CHR section, how do the physical carts still have three chips?
(Trying not to be TOO newbieish!)