From: Daniel Egger <[EMAIL PROTECTED]>
   Date: Wed, 5 Jan 2005 23:08:33 +0100

   > canon rebel uses DOS.

   Possibly only as a bootloader or datashifter.

   According to
   the camera has three different processors and it is more than
   unlikely that the 80186 compatible processor is used for much
   more than filesystem handling and starting a different operating
   system or delegating the work to dedicated ASICs.

I would guess the latter -- delegating the work to dedicated ASIC's.
Generating JPEG's from raw files is a very specialized task that's
very compute-intensive in some ways but which could probably be
implemented quite cheaply in hardware.
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