We build and activate our IODF using z/OS HCD. z/VM 5.3 and 5.4 recognize the change.
In our z/OS IODF, we have addresses 1B00-1B0F as 3278-2 devices. However, according to z/VM 5.4, addresses 1B00-1B0F are DASD devices. Last weekend, we did a POR (Power On Reset). Is there something in z/VM 5.4 that does not allow certain addresses to be 3278-2 devices ?
