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[10] The development of DOSBox began around the launch of Windows 2000—a Windows NT system [11] —when its creators, [12] Dutch programmers Peter Veenstra and Sjoerd van der Berg, discovered that the operating system had dropped much of its support for DOS software. The two knew of solutions at the time, but they could not run the ...
It is specifically available only in versions of MS-DOS 6.0 and higher, [1] and in Microsoft Windows 9x. In Windows NT, the functionality provided exists but is handled by the command rd or rmdir which has slightly different syntax. This command is not present in Windows 7 and 8. In Windows 10, the command switch is RD /S or RMDIR /S.
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).
The last version of Windows to include this subsystem is Windows 10, as Windows 11 (and Windows Server 2008 R2 and later) dropped support for 32-bit processors and therefore cannot run 16-bit software without third-party emulation software (e.g. DOSBox).
Tao ExDOS enables users of DOS applications to work with these applications on new operating systems. Using the built-in Virtual 8086 mode of the x86 CPU, Tao ExDOS enables DOS and 16-bit Windows applications (that run under DOS) to run effectively in 32-bit Windows desktop environments, including Windows 10/8/7/Vista/XP/2000 and Windows Terminal Server 2003/2008. [1]
Not true. It's possible to run a virtualisation application such as DOSBox or Virtual PC on x64 Windows, which in turn can run DOS or Windows 9x which rely on 16-bit code. The x86-64 and Long mode articles both correctly claim it is possible. I'd say Microsoft just didn't want to have two separate WOW emulation layers.
The winver command on Windows 11. Windows 9x command.com report a string from inside command.com. The build version (e.g. 2222), is also derived from there. Windows NT command.com reports either the 32-bit processor string (4nt, cmd), or under some loads, MS-DOS 5.00.500, (for all builds).
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