How do you save in the game during emulation?

Without using savestates? do you make the mcr files? or something else?
Thanks for all your questions in advance...

...I am only guessing your using a ps1 emulator, so...If your using epsxe like me, it should already have memory card files, if not it SHOULD have already generated some...If your using epsxe, which version, I originally had 1.2.0 (yeah that outdated) and that made memorycard files, it came in a compressed folder and once un packed, it had a memorycard folder...If they aren't in there, it should generate some.If not, which version/emulator are you using...I'm only guessing it's a playstation emu because you put in the sybol, you might want to consider telling us a bit more detail next time yeah :)