Some titles compute vibration for every pad but only send it over SIO to a
DualShock (R4 with a presented NeGcon). A trusted mod can now hand the runtime
DualShock motor values per seat; the host pad gets the louder of that and the
guest's SIO motors. Values lapse 8 VBlanks after the last call and are cleared
at every session reset, so nothing can stick on. Opt-in: no title that does
not call it changes. PSX_RUMBLE_TRACE now also logs headless.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Shokunin