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We have made Apache Felix run successfully on the UNC90 embedded platform and here I'd like to share our experience.

Our UNC90 runs on an ARM9 chip with 16 Mb flash and 32 Mb RAM. It runs the uClinux operating system. The flash is divided in four partitions according to the linux/drivers/mtd/maps/modarm9.c file in uClinux's source distribution:

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We have chosen the Mika Java Virtual Machine, made by /k/ Embedded Java Solutions. We install it under /usr/bin and /usr/lib respectively, and its total footprint is about 1.67 MB. It claims to be compatible with at least Java 1.3, but already includes many features from Java 1.4.

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The -Djava.protocol.handler.pkgs=com.acunia.wonka.net option is necessary if you want to do anything URL-related. See here for a full discussion. Basically, we must specify the name of a package containing protocol handlers, which defaults to sun.net.www.protocol. But with Mika this must be set to com.acunia.wonka.net.

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