DOSBox SVN r4264 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:
r4264
Pick some lowhanging fruit. (some memory leaks and unused variables)
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r4263
use delete instead of free, although this code is never really used, as the running process should have been replaced at that point.
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r4262
missed one
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r4261
These actually use float as input.
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r4260
Add 64-bit support to dynamic_x86 core from vogons topic 67673. Thanks jmarsh!
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r4258
Rename bios tester to biostest and make it debug only to avoid people trying to load real bioses.
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Download: DOSBox SVN r4264
Source: Here