Sorry if I wasn't clear, but it was implied that each system should be in its own subsubforum, similar to how the Nintendo subforum is currently set up. Example:
Atari / 2600
Atari / 5200
Atari / 7800
Atari / 8-Bit
Atari / Lynx
Atari / ST
etc.
If an emulator can emulate more than one system...