To start the emulator goto a DOS command prompt, change to the directory you unzipped v7800 into, then type V7800 followed by the name of the ROM file you want to load. The config file specifies all the default configurations that are to be used by the emulator. Any command line options you use when running the emulator will override the setting in the config file. If there is not a config file entry for an option and you don't specify a command line option for it, then the emulator will use and internal default. The only config option that does not correspond to a command line option is the 'path' option.
Path sets the directory to use when loading roms.
This emulator can be downloaded directly from it's homepage. In order to run this emulator, you must have the emulator itself, and a copy of the ROM's from the original system. The emulator itself is Freeware. The ROM's are copyrighted by the programmer or the manufacturer. If you decide to download ROM's to test out an emulator, you must delete the ROM's within 24 hours unless you own the equipment mentioned above.