Pointers

      IRQI field irqi_pdirqHead points to the head of a chain of associated DIRQs.
    Locations
      airqi locates the table of IRQI entries.

      DIRQs are allocated dynamically from the kernel resident heap.

      The IRQI array is a static part of the OS2KRNL load module.

    VM Owners
      IRQI owner id: os2krnl (0xffaa).

      DIRQ owner id: intdirq (0xff78).

    Format

    IRQI 

    旼컴컴컴컴컴컴컴컫컴컴컴쩡컴컴컫컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커�Field Name      �Offset�Length�Type�Description                             �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿶rqi_pdirqHead  �+0    �4     쿏   쿓ead of shared DD chain (0 = not set)   �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿶rqi_usIRQNum   �+4    �2     쿥   쿔RQ number                              �
쳐컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿶rqi_usFlags    �+6    �2     쿥   쿔RQ Flags                               �
읕컴컴컴컴컴컴컴컨컴컴컴좔컴컴컨컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸

    irqi_usFlags flag definitions 

    旼컴컴컴컴컴컴컴컫컴컴컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커
쿙ame            쿍it Mask쿏escription                             �
쳐컴컴컴컴컴컴컴컵컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
�                �0x0003  퀁eserved                                �
쳐컴컴컴컴컴컴컴컵컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿶rqf_fVDM       �0x0004  쿔f set, this IRQ is a candidate for     �
�                �        퀁outing to a VDM, if it is not claimed  �
�                �        쿫y a PDD                                �
쳐컴컴컴컴컴컴컴컵컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿶rqf_fNPX       �0x0008  쿔f set, the IRQ is the NPX interrupt    �
�                �        쿹evel                                   �
쳐컴컴컴컴컴컴컴컵컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿶rqf_fSharing   �0x0010  쿔f set, the IRQ is sharable.  If clear  �
�                �        퀃he IRQ can not be shared by DD.        �
쳐컴컴컴컴컴컴컴컵컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿶rqf_fSys       �0x0020  쿔f set, the IRQ is owned by the system  �
�                �        쿪nd the handler can not be changed or   �
�                �        퀁emoved by a device driver.  Set        �
�                �        쿶nitially for the slave, IRQ 2.         �
쳐컴컴컴컴컴컴컴컵컴컴컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿶rqf_fShared    �0x0040  쿔f set, the IRQ can be shared by more   �
�                �        퀃han 1 DD.  This bit reflects the shared�
�                �        쿾arameter of the first dh_SetIRQ issued �
�                �        쿯or this level.                         �
읕컴컴컴컴컴컴컴컨컴컴컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸

    DIRQ 

    旼컴컴컴컴컴컴컴컴컴컫컴컴컴쩡컴컴컫컴컴쩡컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴커
�Field Name          �Offset�Length�Type�Description                             �
쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿭irq_pdirqLink      �+0    �4     쿏   쿙ext DIRQ structure in list             �
쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿭irq_f16pfn         �+4    �4     쿏   쿏D's interrupt handler                  �
쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿭irq_usDS           �+8    �2     쿥   쿏D's data segment                       �
쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿭irq_usIRQNum       �+a    �2     쿥   쿔RQ number                              �
쳐컴컴컴컴컴컴컴컴컴컵컴컴컴탠컴컴컵컴컴탠컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴캑
쿭irq_pdirqFreeList  �+c    �4     쿏   쿹ist of unset DIRQs                     �
읕컴컴컴컴컴컴컴컴컴컨컴컴컴좔컴컴컨컴컴좔컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴켸

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