NV_PRMCIO_INP0
sense_a = nvif_rd08(device, NV_PRMCIO_INP0) & 0x10;
sense_b = nvif_rd08(device, NV_PRMCIO_INP0) & 0x10;
nvif_rd08(device, NV_PRMCIO_INP0) & 0x10;