DOSBox SVN r4215 is released. DOSBox emulates an Intel x86 PC, complete with sound, graphics, mouse, joystick, modem, etc., necessary for running many old MS-DOS games that simply cannot be run on modern PCs and operating systems, such as Microsoft Windows XP, Windows Vista, Linux and FreeBSD. However, it is not restricted to running only games. In theory, any MS-DOS or PC-DOS (referred to commonly as "DOS") application should run in DOSBox, but the emphasis has been on getting DOS games to run smoothly, which means that communication, networking and printer support are still in early development.

DOSBox also comes with its own DOS-like command prompt. It is still quite rudimentary and lacks many of the features found in MS-DOS, but it is sufficient for installing and running most DOS games.

DOSBox SVN Changelog:
r4215
Make effect of I/O delay more consistent as cycles run out. Prevents flickering in NBA Jam Tournament Edition at higher cycles, and also improves automatic speed limiting in Quake.
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r4214
Add logic in mouse driver to ignore button events that are out of sequence. Fixes International Rugby Challenge when clicking to lock the mouse.
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r4213
Let dynamic core recompile interrupt instructions in non-debug builds. Can help software with many INTs, such as compiled BASIC, run faster.
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r4212
Don't remove bytes from autoexec.bat when changing settings from autoexec.bat, but replace them instead. This way the location stays valid.
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r4211
Change first_shell to be DOS_Shell instead of Program. Makes future manipulations easier.
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r4210
fix limit check
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Download: DOSBox SVN r4215
Source: Here