IBM RT PC Problem Determination Manual page 335

23
The VRM has received initialization data that is not
valid.
The VRM initialization routine detected an
Cause:
invalid load module or an invalid DDS in the data passed
to it from the IPL program. The VRM may have been
installed incorrectly.
Re-install the VRM. If this message persists,
Action:
request a VRM dump, or restart the system.
24
The VRM is unable to allocate a system control
block.
The VRM tried to allocate a system control
Cause:
block and failed. A device driver may have enqueued an
excessive number of virtual interrupts to the user of a
device.
Request a VRM dump, or restart the system.
Action:
25
The Virtual Resource Manager could not find a
fixed disk device driver.
The VRM tried to locate a fixed-disk device
Cause:
driver and failed.
Request a VRM dump, or restart the system.
Action:
26
An I/O channel error has occurred.
An internal process is incorrectly accessing
Cause:
hardware.
Request a VRM dump, or restart the system.
Action:
Appendix C. Abend Codes C-9