Afaik due to POPF not trapping Reactos implemented NTVDM as a software emulator. https://web.archive.org/web/20170723164052/http://community.reactos.org/index.

Afaik due to POPF not trapping Reactos implemented NTVDM as a software emulator. https://web.archive.org/web/20170723164052/http://community.reactos.org/index.php/news/years-progress-ntvdm-part-1 https://web.archive.org/web/20170723164052/http://community.... https://web.archive.org/web/20151216085857/http://community.reactos.org/index.php/news/years-progress-ntvdm-part-2 https://web.archive.org/web/20151216085857/http://community.... At this point you might as well use DOSBOX. Intel Protected Mode POPF fail: https://docs.oracle.com/en/virtualization/virtualbox/6.0/admin/swvirt-details.html https://docs.oracle.com/en/virtualization/virtualbox/6.0/adm... https://devblogs.microsoft.com/oldnewthing/20160411-00/?p=93281 https://devblogs.microsoft.com/oldnewthing/20160411-00/?p=93...