DAS800_GAIN
outb(reg, dev->iobase + DAS800_GAIN);
outb(reg, dev->iobase + DAS800_GAIN);
outb(CIO_ENHF, dev->iobase + DAS800_GAIN);
outb(gain, dev->iobase + DAS800_GAIN);
fifo_overflow = !!(inb(dev->iobase + DAS800_GAIN) &
outb(range, dev->iobase + DAS800_GAIN);