Changes

|version = [https://github.com/leecher1337/ntvdmx64/releases git]{{NTVDMx64Ver}}

|architecture = x86x86_64|target = [[Intel CPUsPOS_(Pong_Consoles)_CPUs_and_Other_Chips#Intel_CPU.27s|x86]]

|website = [https://github.com/leecher1337/ntvdmx64 GitHub]|prog-lang = C, Batchfile, Makefile, Assembly, PHP, C++, Assembly|support =|download = [https://github.com/leecher1337/ntvdmx64/releases Autobuild]

|source = [https://github.com/leecher1337/ntvdmx64 GitHub]

NTVDMx64 is an unofficial patch of Microsoft's NTVDM (''NTVDMx64'NT''' '''V'''irtual '''D'''OS '''M'''achine) for 64is a port of the Windows <abbr title="NT Virtual DOS Machine">NTVDM</abbr> from non-bit Windows. Created x86 machines to x86_64 developed by a person who calls himself Leecher1337, it allows 16-bit DOS applications and games to run on 64-bit Windows. It is partially based on the leaked Windows NT 4 source code. Recent versions of NTVDMx64 allow running allows 16-bit Windows applications and games to work on 64-bit Windows<ref>http://www.columbia.edu/~em36/ntvdmx64.html</ref>.

NTVDMx64 can run text-mode DOS applications as well as games such as Doom, but since NTVDMx64 is very slow and uses non-standard ways to run 16-bit applications and games, it is recommended to use emulators such as [[DOSBox]], [[vDOS]] and [[PCem]], virtualization software such as [[VirtualBox]], [[VMware Workstation Player]] and [[QEMU]] etc. to run 16-bit applications and games on 64-bit Windows.  It was tested on the following <b>x64</b> 64-bit versions of Microsoft Windows:

NTVDMx64 was initially incompatible with It is based on the NTVDM implementation in the MIPS, PowerPC, and Alpha ports of Windows 11 x64, due NT 4 which used "SoftPC" processor emulation to provide x86 software compatibility. By porting the emulated CPU from the fact that leaked NT 4 source code to x86_64, 16-bit applications could work on 64-bit systems. ==Review==NTVDMx64 was initially unable to run when Secure Boot is enabledvery slow, which is required for Windows 11 x64 and it uses non-standard ways to install run 16-bit applications and run. The authorgames, Leecher1337 added loader support for Windows 11 x64 to NTVDMx64so alternatives are recommended where possible. This also applied [[WineVDM]] is a better option to run 16-bit applications on modern Windows 10 x64, when Secure Boot is enabled.