dm_readb
status = dm_readb(DM1105_I2CSTS);
rc = dm_readb(DM1105_I2CDAT + byte + 1);
status = dm_readb(DM1105_I2CSTS);
status = dm_readb(DM1105_I2CSTS);
unsigned int intsts = dm_readb(DM1105_INTSTS);