Changing the .cfg file to point 2 inputs to the same button doesn't work. The second command always gets ignored.
For example:
input_player1_start = "num1"
input_player1_start = "alt"
This will just just map P1 Start to the "1" key on the keyboard and not both the "1" key and the "Alt" key.
There doesn't see to be any combination of commands (that I could think of) that accomplishes this as well:
input_player1_start = "num1" and "Alt"
input_player1_start = "num1 , Alt"
input_player1_start = "num1,Alt"
These ALL disable BOTH buttons because presumable Retroarch is confused.
It's making me crazy. I have Admin buttons on the front panel of my cab (Exit, Select, Start and Pause) but some games like NES use the Start and Select buttons in game so I'd like to also map those to the control panel (where there are multiple extra unused buttons).
Any ideas?