Base directory

The so-called base directory is the place where FS-UAE stores its files. By default, this location is Documents/FS-UAE or $HOME/FS-UAE depending on the FS-UAE version and your system. It it possible to change this location to something else.

See the directories documentation for more information.

If you use the portable version, the base directory is the same as the portable directory (the directory containing Portable.ini).

Source: https://github.com/FrodeSolheim/fs-uae/blob/master/docs/base-dir.md