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03/09/2014 at 14:48 #5552
petrockblog
Keymaster

The button is used by SNESDev to simulate virtual key presses, e.g., ESC, r(ewind), or even the shutdown command.

The JP1 header on the adapter PCB is “only” a break out of GND, 3.3V, 5V, and some GPIO pins for arbitrary use.