Hi, good morning! 😀
I could be wrong, but I believe this gameport card works the same as a gameport on a soundcard.
It simply splits up the gameport into two connectors, just like the original game adapter from IBM did in the 80s.
That way, two players can use a basic joystick.
It may don't have a speed compensation, though. Some later game cards had a little trim pot that was handy for faster machines.
Anyway, I think DOS games talk directly to the card (port 201h) just like they do with VGA..
That being said, there might have been a diskette with utilities included, originally.
Might be interesting to find out!
"Time, it seems, doesn't flow. For some it's fast, for some it's slow.
In what to one race is no time at all, another race can rise and fall..." - The Minstrel
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