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並前往http://www.cypress.com/forum/usb-full-speed-peripherals/have-all-source-code-have-no-idea-what-do

USB low-full-high speed peripherals - Infineon Technologies

note: DeviceType for each control code is FILE_DEVICE_UNKNOWN. ' FILE_DEVICE_UNKNOWN * 2^16 = &H220000. ' 'Access' = FILE_ANY_ACCESS = 0.

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查詢 「FILE_DEVICE_UNKNOWN」的人也找了：

  1. Pdevice_object
    2.
  2. PDRIVER_OBJECT
    3.
  3. File_removable_media
    4.
  4. CTL_CODE
    5.
  5. IOCTL code
    6.
  6. Io control code
    7.
  7. IoCreateDevice
    8.
  8. IRP_MJ_DEVICE_CONTROL
    9.