well, at the start of the thread, you have the zip file I provided with all the instructions you need to get snes running in full screen. You do not use the terminal to launch the games. You use the zemu exe that is placed in the games tab. launch the program and then you highlight the zip file and then you launch the program and highlight the snes rom zip file hit enter or double click on it and it launches in full screen.
Now if you want to launch it from terminal, its
snes9x /mnt/card/rom.zip make sure there are no spaces or capital letters on the zip
-note that the cacko rom images are so different than the ones i provide, you need not use terminal. Follow the instructions i provided. It has directions for the snes emulators to work on cacko. They are very different.
The zip file I provide fixes many issues with gamespeed, keyboard layout, typematic keyrepeater which screws FPS, if you use the terminal, expect some problems.