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{{Infobox emulator|title = otvdm|version = 0.8.1|active = Yes|platform = Windows|architecture = x86_64|target = 16-bit Windows|developer = otya128 [https://github.com/otya128/winevdm/graphs/contributors et al.]|license = GNU GPLv2|source = [https://github.com/otya128/winevdm GitHub]}}<!--Not sure if this qualifies as HLE or LLE due to its use of Wine. Can anyone clarify? -->A '''otvdm''' (or '''WineVDM''', referring to its underlying method) is an open-source [[Compatibility layers|compatibility layer]] and usermode emulator developed by otya128 for 64-bit Windows. It consists of WineVDM, a component of [[Wine]] fork using that serves the same role the <abbr title="NT Virtual DOS Machine">NTVDM</abbr> does on 32-bit Windows,<ref>[https://source.winehq.org/git/wine.git/blob/HEAD:/programs/winevdm/winevdm.c winevdm.c] in Wine's repository. ''[https://github.com/wine-mirror/wine/blob/master/programs/winevdm/winevdm.c GitHub mirror.]''</ref> coupled with [[MAME]]'s 80386 CPU core, along with and the MS-DOS Player, this emulates to emulate and intercept kernel/user/GDI calls from 16-bit apps with other aspects like windowing being passed off through to the host OS. Still a work otvdm is still in progress yet it the early stages but can run simple games like SkiFree, older Microsoft Office versions, and SimCity. Check Since the last stable release, there have been significant improvements for which development builds can be found on AppVeyor. ==Download=={| cellpadding="4"|-|align=center|{{Icon|Win-big}}|'''[https://github.com/otya128/winevdm /releases Official release]'''<br/><small>Stable builds hosted on GitHub] and </small>|-|align=center|{{Icon|Win-big}}|'''[https://githubci.appveyor.com/project/otya128/winevdmDevelopment builds]'''<br/><small>Compiled on AppVeyor</small>|} ==References=={{reflist}} ==External links==* [http://www.columbia.edu/~em36/releases releasesotvdm.html OTVDM page]' pagesby em36 at columbia.edu, includes an Inno Setup installer