The original Game Boy is very different in that regard, to the point where it's relatively simple to get an emulator implemented that can decently play some games.
Of course, there are more intricacies the deeper you dig below the surface, but for the original Game Boy, that is more of a concern for emulators that aim at going towards 100% compatibility. As a game developer, you can probably stay at the surprisingly small apparent surface for quite some time (and at least the earlier Game Boy games often did).
Of course, there are more intricacies the deeper you dig below the surface, but for the original Game Boy, that is more of a concern for emulators that aim at going towards 100% compatibility. As a game developer, you can probably stay at the surprisingly small apparent surface for quite some time (and at least the earlier Game Boy games often did).