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This is the driver for the toshiba pdr-m11 camera.  It's not the greatest
camera, but it is enough for me.

What works:
I can get a list of filenames, download jpeg thumbnails, and download all files

What doesn't work:
Tiff thumbnails don't work.  Deleting a file only works sometimes.


The camera appears to be a 16bit little-endian processor (based on guesses from the data it sends back.)

--------SIGNALS--------------------

-signal-----length-----read/write---------data----------------

1f40            0       w               (used in init)
1f30            0       w               (used in init)

9300            0       w               (sent right before retrieving a picture)
9b00            0       w               (sent right before retrieving a thumbnail)

ad00            8       r               30 01 <2picNum> <jpeg/tiff> 00 00 00

ae00            2       w               01 00           (always follows a b200)
b200            2       w               <2picNum>       (select a picture)

b600            10      r               00 00 <number of pictures> 00 ?? ?? ?? ??
b900            26      r               00 00 <12filename> 20 00 20 00 <4LengthOfPic> 64 46 3f 2e
ba40            2       r               00 00 (used in delete)
bf01            2       r               00 00
d000            4       r               01 30 00 25     (check if camera is ready? (30 and 00 don't change 01 and 25 signal ready)
e600            14      r               ?? ?? ?? ?? ?? ?? ?? <2ThumbSize> ?? ?? ?? ?? ??
d700            0       w               ping
d800            0       w               ping (there is a d800 followed by a d701)
d701            0       w               (ping?)

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