NI_GPCT_COUNTING_MODE_SHIFT
bits |= GI_CNT_MODE(mode >> NI_GPCT_COUNTING_MODE_SHIFT);
NI_GPCT_COUNTING_MODE_MASK = 0x7 << NI_GPCT_COUNTING_MODE_SHIFT,
0x0 << NI_GPCT_COUNTING_MODE_SHIFT,
0x1 << NI_GPCT_COUNTING_MODE_SHIFT,
0x2 << NI_GPCT_COUNTING_MODE_SHIFT,
0x3 << NI_GPCT_COUNTING_MODE_SHIFT,
0x4 << NI_GPCT_COUNTING_MODE_SHIFT,
0x6 << NI_GPCT_COUNTING_MODE_SHIFT,