Which is the license of XXX?
DOSBox
The (autoexec) section could CLS the intro message, query or set the emulated VER (default: 5.00 as in Windows NT 5.x VDMs), MOUNT folders or devices as DOS drives (e.g., mount a a:\ -t floppy), IMGMOUNT an ISO image, switch the current drive from DOSBox Z: to a mounted C:, set the PATH, etc. Special DOSBox commands allow to manipulate configuration options within a guest VDM, there is no corresponding virtual CONFIG.SYS file.