DOSBox is a DOS-emulator that uses the SDL library which makes
DOSBox very easy to port to different platforms.
DOSBox emulates an Intel x86 PC, complete with sound, graphics, mouse, modem, etc., necessary for running many old DOS games that simply cannot be run on modern PCs and operating systems.
DOSBox also emulates CPU:286/386 realmode/protected mode, Directory FileSystem/XMS/EMS,
...Licence : GPL