RAM ROM cartridges

I have an Action Replay with 1M/4M . This is the only cartridge I own. What games will not work on it?
Will it work with games that require ROM?

 

Nope. It will def not work with games that required their own dedicated ROM cartridge (like KoF 95).

 

Yes, ROM and RAM are not compatible and probably they don't even intersects in address space, so there is no way to emulate ROM with RAM, even theoretically with custom bootloader.
Satakore have a good list of games that require and/or support cartridge(s) : http://www.satakore.com/cartridge.php