Sorry if this was posted already, I didn't see it when I looked around.
I wonder why they haven't done this yet? Even make an adapter for it? NHL'94 were me college years(yes, I am an old dude lol) it is the best one they ever made, we played it until the damn game died back then or someone broke the unit, but it was the only game that was a constant(well, that and Madden '91)
Give a shout if you have any inside info on this and thank you!
--old dude