Can IPAC be used in conjunction with GPIO inputs?

[hjk321]

[Using a Pi 4. No specs included as my machine does not yet exist]

So, I am currently making the purchases for my first mini-cabinet and the IPAC-2 looks like a good bet. I plan on a standard ABXYLR-Start-Coin layout, plus 8-direction joystick, times two players, which exactly adds up to the 32 inputs available on the IPAC-2.

I'd also like a few extra meta buttons (pause, etc), and presumably I could wire these buttons directly into the pi's GPIO pins. Has anyone had any experience using both IPAC inputs and GPIO inputs on the same build, or is this not supported by the controller config?

Thanks.

[mitu]

Should be possible, why not ?
Use the GPIO inputs for simulating keyboard keys input and map them to the emulator's controls. For this bit you may need some additional configuration or scripts to interpret the GPIO pins state, but other than that there's just configuring the emulators' input for the actions you need.