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Beta CHDK for G15
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General camera and CHDK port information
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The default ALT button is the Shortcut key. In earlier builds, it was Playback

The Meter key is used for the CHDK functions normally assigned to Display

The half press zebra shortcut is the Erase key.

CHDK PTP remote capture is implemented

Extra long exposures (over 64 seconds) support is implemented

Camera has both an ND filter and adjustable aperture

Development notes:
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Porting thread
https://chdk.setepontos.com/index.php?topic=9257.msg99073#msg99073

Known issues:
    - none

TODO:
    - Debug LEDs address and ON/OFF mechanism in lib.c
    - EXMEM unimplemented
    - ???