For further information , see http://photopc.sourceforge.net/protocol.html.

 register	interpretation
---------------------------------------------------------------------------
  1		resolution
  2		date (seconds since 1/1/1970)
  3		shutter speed
  4		current image number
  5		aperture
  6		color mode
  7		flash mode
  8
  9
 10		frames taken
 11		frames left
 12		size of current image
 13		size of thumbnail of current image
 14 (s)		current preview (captured)
 15
 16		battery life
 17		speed
 18
 19		brightness/contrast
 20		white balance
 21
 22 (s)		camera id
 23		auto off (host)
 24		auto off (field)
 25 (s)		serial number
 26 (s)		software revision
 27
 28		memory left
 29 (s)		upload data here
 30
 31
 32		set to 0x0FEC000E before uploading a file
 33		lens mode
 34
 35		lcd brightness
 36
 37
 38		lcd auto off
 70		spot metering mode
 72		zoom (0 = 1x, 8 = 2x, 520 = 1.6x, 1032 = 2.5x)
 79 (s)		current filename
 83		number of folders in current folder
 		current folder number
 84 (s)		current folder name


 actions	interpretation
---------------------------------------------------------------------
 00 yy zz...	set int register to value zz...
 01 yy		get int register yy

 02 01 00	delete all
 02 02 00	capture image
 02 03 00
 02 04 00	end session
 02 05 00	capture preview
 02 06 00
 02 07 00	delete
 02 08 00
 02 09 00
 02 10 00
 02 11 00
 02 12 00
 02 13 00
 02 14 00
 02 15 00
 02 16 00
 02 17 00	upload file (after writing the file into register)

 03 yy zz...	set string register yy to value zz...
 04 yy 		get string register yy
 06 yy          get string register yy using 32k packets (USB, extended protocol)