Currently, at least with the Flycast (Dreamcast) core, all ports of the console have the RETRO_DEVICE_DEFAULT controller, and it is not possible (AFAIK) to set a port to RETRO_DEVICE_NONE.
This was an oversight. I'll fix it soon. I think Retroarch defaults to RETRO_DEVICE_JOYPAD with the option to change it to RETRO_DEVICE_JOYPAD so I'll do the same
Currently, at least with the Flycast (Dreamcast) core, all ports of the console have the
RETRO_DEVICE_DEFAULT
controller, and it is not possible (AFAIK) to set a port toRETRO_DEVICE_NONE
.