@mccu7pj2
You don't really create an .srm file. The .srm files are created automatically when you save in game, using the original save method intended on the console (such as selecting Save after a castle in Super Mario World). These are created by the emulators to emulate this function of the original cartridge. Save states are different and are specific to emulation, the emulator dumps a copy of the memory to a file to reload, these are what you get when you press HOTKEY + R to save and these are .state files.
If you are playing a game that saves your progress automatically as you go along (Zelda, Super Mario World, Super Mario All Stars, Uniracers, etc.) it will create an srm file for you at the appropriate point when the game would save on a physical console.
Si