Some 8086 PCs are equipped with an EMS card offering LIM memory. If
you're fortunate enough to own such a card, today you can unlock XMS
support by installing EXMS86.
EXMS86 is a TSR that provides XMS 2.0 extended memory services by
leveraging an EMS 4.0 expanded memory source. It’s tailored for 16-bit
DOS systems outfitted with EMS hardware such as the Lo-Tech EMS board,
Bocaram XT, etc.
http://mateusz.fr/exms86/
So far, EXMS86 has been verified to work with applications like DOSMid
and Wolfenstein 3D. Testing is ongoing and somewhat limited, as I don’t
have access to a physical EMS card myself, so I rely only on a finicky
virtual setup and feedback from EMS card owners.
One interesting use case for EXMS86 is to enable 8086+EMS users to run
FreeCOM with its XMS swap feature. I was able to make this work on
DOSBox, albeit I did not get confirmation yet if it works on real hardware.
Mateusz
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