SuperHACBStruct
A data structure, or message packet, that puts I/O requests into a protocol-specific command block (such as SCSI or IDE-ATA).
typedef struct SuperHACBStruct{ BYTE cdmSpace[32]; struct HACBStruct HACB; } SuperHACBDef;
It provides additional space for CDM developers to attach additional CDM state information, and it encapsulates a Host Adapter Control Block [see HACB or HACBStruct] which is the structure passed between a Custom Device Module (CDM) and a Host Adapter Module (HAM) via the Media Manager.
The CDM uses a SuperHACB to build a device-specific I/O request from a CDM message [see CDMMessageStruct] it receives from the Media Manager.
As a data member of the SuperHACB, the CDM places device specific commands in the HACB and initiates its execution by sending it to the HAM via the Media Manager. The HAM passes the information in the HACB to the target device for processing.
Each HACB created with CDI_Allocate_HACB is enveloped in a SuperHACB data structure.