I am building a mame arcade for my kids (and myself!).
The base is a regular jamma cabinet with an original arcade monitor connected with a J-Pac to a computer (and occasionally to my jamma 1942 and 1943 boards).
It is running on ArcedeOS/advanceMame now but I am not able to get the "insert key" and "exit game" functions connected with a button combo.
Now I have to leave the cabinet open because it has an insert coin button inside (and a pc keyboard).
Does anyone have a clue on how to fix this?