## Physical Device Driver Reference

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### RMHandleToParent Return Value - rc

rc (APIRET) - returns On systems where the Resource Manager driver is not installed, the library interface code will return RMRC_NOT_INSTALLED.

RMRC_IRQ_ENTRY_ILLEGAL A Resource Manager service was issued at interrupt time. The Resource Manager service request can be issued only at task time or INIT time.
RMRC_NULL_POINTER A Resource Manager service received a NULL value for a pointer that was expected to contain a valid 16:16 address.
RMRC_BAD_DEVICEHANDLE The expected Resource Manager handles were not provided because the handle was not a valid Resource Manager handle or the handle did not point to the type of object the service required.