CHDK working on the Canon S90!
CHDK (Canon Hack Development Kit) has finally been ported to the Canon S90! CHDK extends the functionality of the camera like allowing you to control your camera remotely through USB! Not only that, you can create scripts to invoke the camera functionality.
One of the cool feature. It overwrites the shutter speed! The Canon S90 allows exposure time up to 15 secs. With CHDK, you can open the shutter way longer than 15 seconds! No bulb mode though. Time to get ND filters!
Installation is easy, download the BOOTDISK.BIN and PS.FI2 for your camera and firmware version. Load it into the root of your SD Card.
To start CHDK, start the camera in Playback mode. Hit the menu button and select update firmware. Confirm the update and the camera will reboot with the CHDK firmware.
Don’t worry, it doesn’t update the camera firmware, it simply loads the CHDK off the SD Card. CHDK is unloaded when your camera is rebooted.
Check out the CHDK website. While you are at it, check out the Canon S90 CHDK port forum thread.