ddmaster will take a configuration file amaster.src from the game directory. You can use ddmaster -dc on an empty directory to print a list of configuration options with defaults, or check the provided sample file. Alternatively, you can pass the name of a custom configuration file using command line option -f FILE.

The configuration file is a subset of the amaster.src file used with AMaster. There's a good chance that you can use your prepared AMaster configuration file with ddmaster as well. ddmaster will ignore unrecognized option names. If an option receives more values than supported by ddmaster, the excess will be ignored as well.

Options specific to ddmaster can be given in a section %ddmaster in the configuration file; see the provided example.