windows XP update breaks EMS DOS issue (AREV Specific)
At 19 OCT 2012 10:56:14AM Joel Fischer wrote:
KB2661254 or KB2661254-v2 patches / updates which rolled out from Microsoft on 10/11 Oct 2012 destroy EMS support.
You need to roll that back in order to have a properly functioning AREV environment under DOS.
this page describes how to roll it back:
Windows XP: Restore EMS (expanded memory) after 10 October 2012 Windows update