DMM32AT_AI_LO_CHAN_REG
outb(chan, dev->iobase + DMM32AT_AI_LO_CHAN_REG);
outb(0x80, dev->iobase + DMM32AT_AI_LO_CHAN_REG);
ailo = inb(dev->iobase + DMM32AT_AI_LO_CHAN_REG);