Pointers

      _pvddepHead points to the head of a chain of VDDEP structres. One is allocated for each VDD the registers an either or both a VDD/VDD or VDD/OS2 entry point. There entry points are used respectively when either a VDHRequestVDD/VDHOpenVDD or DosRequestVDD/DosOpenVDD call is made.

      VDDEP field vddep_vddp points to the associated chain of VDDPROC structures. One is allocated for each VDD the registers entry points under the same name.

      _phdlVddHead points to the head of a chain of HDLVDD structures. One is allocated for each open VDD. The handle returned is the address of the associated HDLVDD.

      _ppddephead points to the head of a chain of PDDEP structures. One is allocated for each Physical Device Driver that registers an entry point for VDD/PDD communication. The entry point is registered using DevHlp_RegisterPDD, and accessed using VDHRequestPDD.

    Locations
      VDDEPs, VDDPROCs, HDLVDDs and PDDEPs are allocated dynamically from the kernel resident heap.
    VM Owner
      VDDEP owner id: vddep (0xffd2).

      VDDPROC owner id: vddproc (0xffdb).

      HDLVDD owner id: vddlr (0xffd7).

      PDDEP owner id: vddpddep (0xffda).

    Format

    VDDEP 

    旼컴컴컴컴컴컴컴컫컴컴컴쩡컴컴컫컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커�Field Name      �Offset�Length�Type�Description                             �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
퀆ddep_szVDD     �+0    �9     쿌   쿣DD Name                                �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
퀆ddep_vddp      �+9    �4     쿏   쿣DD entry points (pointer to VDDPROC)   �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
퀆ddep_hmte      �+d    �4     쿏   쿣DD hmte for deregistering if VDD fails �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
퀆ddep_pvddep    �+11   �4     쿏   쿙ext VDD (pointer to next VDDEP)        �
읕컴컴컴컴컴컴컴컨컴컴컴좔컴컴컨컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸

    VDDPROC 

    旼컴컴컴컴컴컴컴컫컴컴컴쩡컴컴컫컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커
�Field Name      �Offset�Length�Type�Description                             �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
퀆ddproc_pfnvdd  �+0    �4     쿏   쿐ntry point for VDD/VDD comm.           �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
퀆ddproc_pfnos2  �+4    �4     쿏   쿐ntry point for OS2/VDD comm.           �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿾vddproc        �+4    �4     쿏   쿐ntry points registered with same name  �
읕컴컴컴컴컴컴컴컨컴컴컴좔컴컴컨컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸

    HDLVDD 

    旼컴컴컴컴컴컴컴컫컴컴컴쩡컴컴컫컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커
�Field Name      �Offset�Length�Type�Description                             �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿴dlvdd_pvddproc �+0    �4     쿏   쿣DD routine to be called (pointer to    �
�                �      �      �    쿣DDPROC)                                �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿴dlvdd          �+4    �4     쿏   쿛ointer to next VDD handle;NULL if no   �
�                �      �      �    쿺ore                                    �
읕컴컴컴컴컴컴컴컨컴컴컴좔컴컴컨컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸

    PDDEP 

    旼컴컴컴컴컴컴컴컫컴컴컴쩡컴컴컫컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커
�Field Name      �Offset�Length�Type�Description                             �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿾ddep_szPDD     �+0    �9     쿌   쿛DD name                                �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿾ddep_fpfn      �+9    �4     쿏   쿐ntry point routine                     �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿾ddep_ppddep    �+d    �4     쿏   쿙ext entry point (PDDEP)                �
읕컴컴컴컴컴컴컴컨컴컴컴좔컴컴컨컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸

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