What??!!?? No multi-meter?
50 lashes with a wet noodle and one demerit for coming to class unprepared.

For now I just have those two pinball buttons mapped to P1 SW6 and P1 SW7. Earlier I had them in P1 Start and P1 Coin but it looks like that will conflict with stuff and make the pinball buttons useless. I haven't test out the pinball emulator yet to make sure things work right as I'm still trying to set up other stuff like LEDBlinky but I assume it'll work.
You definitely don't want a pinball flipper on P1 Start, since that is the "shifted function" button for the IPac.
It won't send a keystroke until it is released
or a button with a shifted function is pressed.
You can piggyback flippers on certain player buttons.
The pinball emulators are not as easily-configurable as MAME, so I suggest wiring the pinball controls according to this chart.

Scott