NISTC_AO_STATUS1_REG
[NITIO_G1_STATUS] = { NISTC_AO_STATUS1_REG, 2 },
[NISTC_AO_STATUS1_REG] = { 0x106, 2 },
b_status = ni_stc_readw(dev, NISTC_AO_STATUS1_REG);
b_status = ni_stc_readw(dev, NISTC_AO_STATUS1_REG);