dac_2comp
if (chan == 0 && devpriv->dac0_coding == dac_2comp)
if (chan == 1 && devpriv->dac1_coding == dac_2comp)
bool dac_2comp[2];
if (devpriv->dac_2comp[chan])
devpriv->dac_2comp[0] = (it->options[6] == 0);
devpriv->dac_2comp[1] = (it->options[8] == 0);
? (dac_straight) : (dac_2comp);
if (devpriv->dac_coding[chan] == dac_2comp)