FujiFilm's Tech History


  • In 1988, Fujifilm released their first 0.4mp digital camera, the Fujix DS-1P (first commercial digital camera)
  • Fuji released the $3500 Fujifilm S1 Pro in 2000, which accepted firmware updates
  • In 2003, Fujifilm first released a firmware update and hackers on DPReview started to tinker with it
  • Fujifilm started out using VxWorks, then later switched to MiSPO iTRON/NORTi
  • More modern cameras use ThreadX, an open source RTOS. Most of the original Fujifilm code is still present.
  • Modern cameras use SQLite to store some settings. SQLite starts up about 10 minutes after powering on the camera.
  • SQLite was introduced in ~2012 to manage special settings in the camera
  • In 2016-2017, a web server was introduced, with WiFi (wpa_supplicant)
  • In 2022, Linux is dual booted on the X-H2S


  • Early Fujifilm cameras started out with TX49 MIPS III CPUs but switched to ARM later on (64 bit, Little endian)
  • Smaller cameras have the FF4224, Arm v5 Little Endian 32 bit SoC
  • Later cameras are Cortex A7
  • The SoC has no internal memory and must be paired with external RAM chips (most of the time it's 256mb)
  • Flash chips tend to be under the SD card reader (and tend to be 64mb)


  • Vector graphics processing is handled on vglib task
  • Most cameras use OpenVG with the VG_KHR_EGL_image plugin. Implemented into Fuji cameras by NEC Systems Technology Ltd in the 2000s.
  • The rst task renders the OpenVG objects (?)

Memory Management

  • Each task tends to have a custom method of allocating memory
  • Each task tends to have it's own memset/memcpy/strcpy set of functions
  • Once SQLite is initialized manually, memory can be allocated from sqlite_mallocAlarm
  • Memory starts at 0x00000000 and a mirror of the same region starts at 0x400000000
  • Main memory seems to be 256 megabytes, and each other region (0x1, 0x2, 0x3*...) seems to be 256kb
  • IO regions start at 0xf0000000 (?)