i am not a programmer so perhaps i am wrong 
my question is, if a Dolphin emulator can emulate a real Wii, with its chipsets, motherboard, and so on, why some games work ,whereas other give black screen ?? , it is something weird that happen almost with all emulators, for example for DS there were some games that did not boot , although the chipset 2 and 3-D worked correctly.

my question is, if a Dolphin emulator can emulate a real Wii, with its chipsets, motherboard, and so on, why some games work ,whereas other give black screen ?? , it is something weird that happen almost with all emulators, for example for DS there were some games that did not boot , although the chipset 2 and 3-D worked correctly.