Canon Digital IXUS 860 IS - General Discussion and Assistance - CHDK Forum
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Canon Digital IXUS 860 IS

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Offline TomoSnake

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Canon Digital IXUS 860 IS
« on: 02 / March / 2008, 10:00:24 »
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Hello,... This is my first post on this forum, wich is BTW great. I got question if I may ... Is there any working Canon Digital IXUS 860 IS firmware? ...

TIA  :)
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Offline whim

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Re: Canon Digital IXUS 860 IS
« Reply #1 on: 02 / March / 2008, 10:42:36 »
Hi !
The 860IS firmware has been dumped: read here: SD870IS Firmware dumping
but AFAIK not yet been ported -- check here for progress: SD870 porting - first steps?

wim

BTW: Your cam is also known as SD870IS, keep that in mind while searching the forum
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Offline TomoSnake

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Re: Canon Digital IXUS 860 IS
« Reply #2 on: 02 / March / 2008, 12:10:19 »
Don't get me wrong. But i don't understand that? I can't apply new FW on my canon or? :(

Please don't get me wrong, but i don't know a bit about that. Can you walk me through?


TIA  8)
« Last Edit: 02 / March / 2008, 12:17:50 by TomoSnake »
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Offline BB

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Re: Canon Digital IXUS 860 IS
« Reply #3 on: 02 / March / 2008, 12:51:51 »
TS,

"Firmware" is the software in your camera that is stored on a flash memory chip... It runs your entire camera (boots, moves lens, takes pictures, writes the files, etc.).

The Firmware is written by Canon and they do not release the source file (the human readable form) or the "object code" (the form that the camera's computer can read).

Basically what CHDK does is a person figured out how to dump the firmware from the camera (the hard way... by flashing and LED for the data bits in the camera and reading that with a computer). That person then took the code and used a "disassembler" to figure out how the camera works (there are "hints" in the code--variable names, sometimes "function labels" from the original source code and such that give clues).

The CHDK software engineer then created the CHDK program to load on boot and "take over" the main camera code. When you push a button or move a switch, the CHDK code then "calls" the internal camera functions to perform that particular function (say 1/2 press the shutter button). And now that the software engineer has control of the camera, they can write new software to do things that the basic camera firmware does not know how to do (like motion detection, bracketing exposures, etc.).

However, for each camera (and each version of firmware), somebody (a volunteer) has to dump the new code and re-find all of the camera's firmware exact addresses again to include into the CHDK program.

-Bill
« Last Edit: 02 / March / 2008, 18:26:01 by BB »
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Offline TomoSnake

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Re: Canon Digital IXUS 860 IS
« Reply #4 on: 02 / March / 2008, 17:18:11 »
Bill, thanks you very much for explain.  :o. I got it now ... One more time, THNX. So, is there any chance of writing some firmware for IXUS 860IS?

Sorry for Dummy quastions  :( :-X
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Offline whim

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Re: Canon Digital IXUS 860 IS
« Reply #5 on: 02 / March / 2008, 17:33:50 »
Well, as I said before, the 'porting' is not finished yet, and until that's done no CHDK on
this type of cam. Keep checking this topic: SD870 porting - first steps? and eventually you will find that somebody finishes it.
You could also keep an eye on the CHDK news page here: CHDK - CHDK Wiki
where new 'ports' are usually announced.

good luck,

wim
« Last Edit: 02 / March / 2008, 17:37:17 by whim »
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Offline TomoSnake

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Re: Canon Digital IXUS 860 IS
« Reply #6 on: 02 / March / 2008, 17:36:31 »
THNX to all ... I'll keep coming to the forum to see is there any updates.  :)


many thanks  8) ::)
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Offline stereoscopic

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Re: Canon Digital IXUS 860 IS
« Reply #7 on: 03 / April / 2008, 09:22:44 »
A preliminary port of CHDK to the IXUS860/SD870 is now available.
Refer to this post in a different tread:
  SD870 porting - first steps?
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