DOSBox is an emulator of a PC with DOS.
The main focus of this project is emulating old DOS games using the
local file system for files.

Currently emulated is:

o CPU:286/386 realmode/pmode
o GFX:VGA/EGS/CGA/SVGA/VESA
o SND:PC-Speaker/Tandy 3-Voice/Adlib/SoundBlaster
o MSC:Keyboard/Mouse
o DOS:Directory FileSystem/XMS/EMS

WWW: http://dosbox.sourceforge.net/