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DOSBox is a free and open-source emulator which runs software for MS-DOS compatible disk operating systems—primarily video games. [5] It was first released in 2002, when DOS technology was becoming obsolete.
FreeDOS is designed to work well with virtualization software such as VirtualBox and VMware. The installation process is identical to real hardware. It is also possible to install FreeDOS on DOSBox and its derivatives. By doing so, it provides additional functionality not present in the emulator. [43] [44]
Virtual DOS machines can operate either exclusively through typical software emulation methods (e.g. dynamic recompilation) or can rely on the virtual 8086 mode of the Intel 80386 processor, which allows real mode 8086 software to run in a controlled environment by catching all operations which involve accessing protected hardware and forwarding them to the normal operating system (as exceptions).
Based on the popular DOSBox, dbDOS quickly became an easy way to enable virtually any DOS-based application on Microsoft's Windows XP, Vista, Windows 7, Windows Server 2003 and Windows Server 2008, both 32- and 64-bit versions of the operating systems. With enhanced support for dBASE III, dBASE IV (Version 1, 2, 3), and dBASE V for DOS, dbDOS ...
In all 32-bit (IA-32) editions of the Windows NT family since 1993, DOS emulation is provided by way of a virtual DOS machine (NTVDM). 64-bit (IA-64 and x86-64) versions of Windows do not support NTVDM and cannot run 16-bit DOS applications directly; third-party emulators such as DOSbox can be used to run DOS programs on those machines.
DJGPP presents the programmer an interface which is compatible with the ANSI C and C99 standards, DOS APIs, and an older POSIX-like environment.Compiled binaries are long filename (LFN) aware and can handle such names under most 32-bit Windows by default, but they cannot use the Win16 or Win32 APIs that graphical programs on Windows need.
However, the setup.exe is an MZ executable so won't run under 64-bit versions of Windows, and the bi-modal ml.exe is compressed, and the decomp.exe is an NE executable, so also won't run under 64-bit versions of Windows (if you were hoping to manually extract the required ml.exe and ml.err), so you effectively need access to 32-bit Windows (or ...
MZ DOS executables can be run from DOS and Windows 9x-based operating systems. 32-bit Windows NT-based operating systems can execute them using their built-in Virtual DOS machine (although some graphics modes are unsupported). 64-bit versions of Windows cannot execute them. Alternative ways to run these executables include DOSBox and DOSEMU.