zation Order
DDB_Control_Proc        dd  ?                   ; Offset of control procedure
DDB_V86_API_Proc        dd  0                   ; Offset of API procedure (or 0)
DDB_PM_API_Proc         dd  0                   ; Offset of API procedure (or 0)
DDB_V86_API_CSIP        dd  0                   ; CS:IP of API entry point
DDB_PM_API_CSIP         dd  0                   ; CS:IP of API entry point
DDB_Reference_Data      dd  ?                   ; Reference data from real mode
DDB_Service_Table_Ptr   dd  0