Hello ..
In answer to the many questions about using alternates to F11, F12 and Left ALT and CTL with “chips"- I have solved the problem, for my TYNEMOUTH A600 USB adaptor. (I'm not sure if the the KEYRAH is mapped the same but a simple ASCII check can be made and substitution.) I now have an option for the "HELP" key to get to the menu.
The two files are:
uae4arm-rpi/src/cfgfile.cpp
Look for:
p->key_for_menu = SDLK_F12;
and in the case of the TYNEMOUTH replace with:-
p->key_for_menu = SDLK_PAGEDOWN;
uae4arm-rpi/src/od-pandora/gui/PanelInput.cpp
Look for:
static const int ControlKey_SDLKeyValues[] = {SDLK_F11 , SDLK_F12, SDLK_LALT , SDLK_LCTRL };
and in the case of the TYNEMOUTH replace with:-
static const int ControlKey_SDLKeyValues[] = {SDLK_PAGEDOWN , SDLK_F12, SDLK_LALT , SDLK_LCTRL };
Recompile and you're good to go! :)
Enjoy!
ASCII Reference: https://www.libsdl.org/release/SDL-1.2.15/include/SDL_keysym.h