IIC_ISR_ALD
if (isr & (IIC_ISR_BED | (bit & IIC_ISR_ALD)))
else if (isr & (bit & ~IIC_ISR_ALD))
if ((error = iopiic_wait(sc, IIC_ISR_IRF | IIC_ISR_ALD, flags)) == 0)
error = iopiic_wait(sc, IIC_ISR_ITE | IIC_ISR_ALD, flags);