sampledevices/ Contains sample device descriptions to use with the Custom Device feature of the emulator, in System > Configure System > Devices > Add > Custom Device. The .atdevice file specification is in the help file. deviceserver/ Base implementation of the TCP device server for handling custom requests from a custom device, and sample device servers for printer and R-Verter emulation (paired with the corresponding .atdevices). Python 3 is required to run the scripts. Unlike Altirra itself, these files are licensed under the zlib/libpng license instead of the GNU General Public License (GPL).