SQEMM is a project i built out of necessity to support EMS on a handful of architectures with bad driver situations for testing RealDOOM. I worked on SQEMM very lightly for a couple years, but in the past month and a half or so I made a stronger push to get it to a more usable state. Today I created a release with support for about 8 chipsets and addon boards.

https://github.com/sqpat/SQEMM/releases/tag/0.8

I hope people have some time to give it a try. I would love feedback including bug reports or feature requests. Right now, it's mostly just an EMS driver but I expect to try and add QRAM-like UMB features to chipsets that are capable down the road.

Currently the supported chipsets/hardware are:

• VLSI SCAMP/TOPCAT
• C&T SCAT
• C&T NEAT
• Headland HT18/GC103
• LoTech ISA EMS Board
• "Standard" EMS boards
• Fantasy EMS Card
• WD76C10

Coming soon should be the following previously supported chipsets:

• Headland HT-12
• Intel Above Board
• HEDAKA
• SARC RC2016A
• Rodney's EMS Chipset

There are a few other chipsets and addon boards I am also looking at but need hardware access/documentation for testing and development. Adding support for new chipsets is not too difficult as long as I have those things.