TIOStdReq

type TIOStdReq = packed record

  io_Message: TMessage;

  io_Device: PDevice;

  io_Unit: PUnit;

  io_Command: Word;

  io_Flags: Byte;

  io_Error: ShortInt;

  io_Actual: DWord;

  io_Length: DWord;

  io_Data: Pointer;

  io_Offset: DWord;

end;