SRQI
status |= SRQI;
status &= ~SRQI;
static const unsigned int ni_usb_ibsta_mask = SRQI | ATN | CIC | REM | LACS | TACS | LOK;
SRQI | LOK | REM | CIC | ATN | TACS | LACS | DTAS | DCAS;
if (board->status & SRQI) {
EVENT | LOK | REM | CIC | ATN | TACS | LACS | DTAS | DCAS | SRQI,