## Physical Device Driver Reference

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### RMADDToHDevice 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 and will set hDevice to -1L.

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.