- The A420 does not have an iris diaphragm, it has a smaller snap-in aperture (not an ND filter) Seen this in a dismantled A430 optics, suspect the same in at least the A410 - A430 models. The CHDK controls this the same as an ND-filter.LED ADDRESSESAF_LED 0xC0220080BLUE_LED 0xC0220084RED_LED 0xC0220088GREEN_LED 0xC022008CORANGE_LED 0xC0220090ChangelogBeta 1, 2011-06-25- based on A430, thanks to the authors of that port- haven't checked the automatically found stubs, only the overrides (the two models are closely related, I assumed)- the loader part almost identical (changed one led address in an inactive function)- USB completely untested, don't know if it works or not, A430 stuff without change- no video control (not yet ported)- optics stuff unchanged, don't know if it's correct or not- sensor data the same as in A430 (probably the same sensor in the two models)- RAW/DNG works, RAW not recognized by anything (probably because A430 is still beta, nobody cared)- RAW/DNG file numbers work as expected (using hack from A530)- extra long exposures work (tested with 80sec), shutter speed override works- flash adjustment seems to work- zebra seems to work (not fully tested)- grids work- histogram works (not fully tested)- manual focusing works, but barely usable (small viewfinder resolution)As the mechanical shutter and the "ND-filter" (see above) is broken in my camera, can't test their functionality.Crashes, when trying to view page >= 10 of params debug, reason unknown, bug inherited from the A430 port.Movie mode used to exhibit some funny things, better avoid using it for now.There might be other bugs, use it with caution.
- RAW/DNG works, RAW not recognized by anything (probably because A430 is still beta, nobody cared)
Crashes, when trying to view page >= 10 of params debug, reason unknown, bug inherited from the A430 port.
Very nice.
- The A420 does not have an iris diaphragm, it has a smaller snap-in aperture (not an ND filter) Seen this in a dismantled A430 optics
Added the A420 1.00B dump (full 4MB dump, by srsa_4c) from this post to the box.net/chdk repository.Thx srsa_4c !
I've found the correct value for get_flash_params_count (108) by trial-and-error, will correct it in the next release.
- modemap is now correct- movie mode is now supported (quality override, zoom, af-scan, exposure override works, filesize can grow over 1GB)- aperture table corrected- movie time limit lifted to 1 hour / recording in 320x240 and 640x480 modes- USB remote should workBugs (it should be called an "issue" instead)- AF-scan causes crash during 640x480 movie recording, works fine otherwiseCamera specific CHDK behaviour:- enabling both "video quality control" and "enable optical zoom" in the "video parameters" submenu is not recommended pressing the up/down buttons would zoom AND change compression quality at the same time
Movie mode used to exhibit some funny things, better avoid using it for now.
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