dio200_read8
data[1] = dio200_read8(dev, subpriv->ofs) & subpriv->valid_isns;
while ((intstat = (dio200_read8(dev, subpriv->ofs) &
val = dio200_read8(dev, subpriv->ofs + I8255_DATA_A_REG);
val |= dio200_read8(dev, subpriv->ofs + I8255_DATA_B_REG) << 8;
val |= dio200_read8(dev, subpriv->ofs + I8255_DATA_C_REG) << 16;