ACTL_IRQEN
outb(ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL);
outb(ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL);
outb(ACTL_IRQEN | ACTL_FIFOWR | ACTL_FIFOEN |
outb(ACTL_IRQEN | ACTL_FIFOEN | PARITY_MASK,
outb(ACTL_IRQEN | ACTL_FIFOWR | ACTL_FIFOEN |
outb(ACTL_IRQEN | ACTL_FIFOEN | PARITY_MASK,
outb(ACTL_ARB | ACTL_IRQEN | PARITY_MASK, fd->base + REG_ACTL);