HOW TO MAP A JOYSTICK BUTTON TO EXIT EMULATOR ON LINUX ?

Hi I cannot find a valid method to EXIT from Supermodel3 emulator on Linux (without any keyboard attached),
I don't have any keyboard on my Linux based bartop / arcade cabinet,
so do you think is it possible to configure "supermodel.ini" with an Hotkey combination ?

For example, when I press "Select" button on jopad1 and "Start" button on joypad1, I figure it can act like "Escape" 27 Ascii vaule,
Key to exit from supermodel emulator.

On Retropie 4.8.9 (on Raspberry PI5 ) start+select is the default combination (Hotkey) to exit from any emulators except from Supremodel3, recompiled by me..., the other working way is to use in Retropie, the Libretro Supermodel version called
"lr-supermodel", where START+SELECT hotkey works, but I prefer to use my recompiled version of supermodel3 emu, without using the Libretro "lr-supermodel" version)

If isn't possible to do an EXIT sequence different from ESC , in "supermodel.ini" file,
maybe can exist a sort of executable paramter to Exit without "ESC key" or not yet implemented ?

like:
supermodel -fullscreen -exit-emulator="START+SELECT"

Thank you for support

Start with supermodel.ini and the current ESC-based exit behavior, then compare the requested START+SELECT mapping with the lr-supermodel behavior described in the issue. Done means documenting or implementing a supported exit sequence for the recompiled Supermodel3 executable without a keyboard.