emulators question

[aynakupo]

i have some questions about the emulators: (gb gba nes snes psx n64 etc).

do they run just as fast as the original console? ive read that n64 doesn't but how about others?

do these emulators support 2 or more players?

do they have the save/load state feature?

do they have an action replay gameshark coder?

which ones do which ones dont?

[demondude777]

All 4 of your questions can be answered with the same responce:

"Some do, and some don't"

The readme files or descriptions when you find them will tell you what you can do