I found this in the Commander X16 Quick Intro FAQs for Setup by Voidstar:
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While the inexpensive "under $10" SNES gamepads do work - I've found that a lot of them might only partially work on the X16. Specifically, for a great many of them, the SELECT button seems to be interpreted as always being pressed. For this reason, we can't point to a single SNES Gamepad vendor and say use that one. Even the sources that those vendor use might be inconsistent on which ones have issue or not.
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This is what I ran into with the first SNES wired
![Image]()
game controllers I purchased from Amazon. I purchased the Scout wireless SNES from the Micro Center and, once charged, works great. I've included pictures so you can avoid the bad ones I got.
This will get us started in identifying bad and good SNES controllers.
Thanks for the help,
Gerry