ibrpp
Name
ibrpp -- perform a parallel poll (board or device)
Synopsis
int ibrpp(int ud, char *ppoll_result);
Description
ibrpp() causes the interface board to perform a parallel poll, and stores
the resulting parallel poll byte in the
location specified by ppoll_result. Bits 0 to 7
of the parallel poll byte correspond to the dio lines 1 to 8, with
a 1 indicating the corresponding dio line is asserted. The devices
on the bus you wish to poll should be configured beforehand with
ibppc(). The board
which performs the parallel poll must be controller-in-charge, and
is specified by the descriptor ud.
If ud is a device descriptor instead of
a board descriptor, the device's access board performs the
parallel poll.
Return value
The value of ibsta is returned.