Unsure about the use of this native but here's an example:
void sub_8709() {
MISC::_1EAE0A6E978894A2(0, 1);
MISC::_1EAE0A6E978894A2(1, 1);
MISC::_1EAE0A6E978894A2(2, 1);
MISC::_1EAE0A6E978894A2(3, 1);
MISC::_1EAE0A6E978894A2(4, 1);
MISC::_1EAE0A6E978894A2(5, 1);
MISC::_1EAE0A6E978894A2(6, 1);
MISC::_1EAE0A6E978894A2(7, 1);
MISC::_1EAE0A6E978894A2(8, 1);
}
So it appears that p0 ranges from 0 to 8.
ENABLE_DISPATCH_SERVICE, seems to have a similar layout.