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DOSBox is an emulator program that emulates an IBM PC compatible computer running a DOS operating system. Many IBM PC compatible graphics and sound cards are also emulated. This means that original DOS programs (including PC games) are provided an environment in which they can run correctly, even though the modern computers have dropped support for that old environment. DOSBox is free software written primarily in C++ and distributed under the GNU General Public License. DOSBox has been downloaded over 30 million times since its release on SourceForge in 2002.〔(【引用サイトリンク】title=Download Statistics )〕 DOSBox can run old DOS software on modern computers which would not work otherwise, because of incompatibilities between the older software and modern hardware and operating systems. A number of usability enhancements have been added to DOSBox beyond emulating DOS. The added features include virtual hard drives, peer-to-peer networking, screen capture and screencasting from the emulated screen. An official version of DOSBox has not been released since DOSBox 0.74 in May 2010, although development continues in the SVN version. Forks such as SVN Daum and DOSBox-X provide additional features, which include support for save states and long filenames.〔 A number of vintage DOS games have been re-released by video game developers to run on modern computers by encapsulating them inside DOSBox. ==Features== DOSBox is a command-line program, configured either by a set of command-line arguments or by editing a plain text configuration file. For ease of use, several graphical front-ends have been developed by the user community. A popular feature of DOSBox is its ability to capture screenshots and record gameplay footage. The video is compressed using the lossless ''Zip Motion Block Video'' codec. In its uncompressed state the footage is almost an exact replica of the actual program. The video recording feature was added in version 0.65. In earlier versions, one had to rely on custom modifications and a third-party screen recorder to record video, but the quality and emulator performance was generally very poor. The DOSBox project has a policy of not adding features that aren't used by DOS games if they take significant effort to implement, are likely to be a source of bugs or portability problems, and/or impact performance. Probably the most common hardware feature of DOS-era PCs that the official version of DOSBox doesn't emulate is the parallel port that was used to connect most printers, since very few games can make use of a printer, though users can just PrintScreen output of DOSBox, and print a page of it using normal image software on Windows or other operating systems (some DOS-type business applications like VP-Info that run on DOSBox can switch printer output to a text file which can be printed from Windows). For similar reasons, support for long filenames (LFN) and Ctrl-Break are also not added into the official versions, though LFN support is available in some unofficial enhanced SVN builds. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「DOSBox」の詳細全文を読む スポンサード リンク
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