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Subject: G5 iPod installation, Mac's and the simulator

G5 iPod installation, Mac's and the simulator

From: Bill Janssen <janssen_at_parc.com>
Date: Mon, 14 Aug 2006 17:35:24 PDT

I've finally got my application running under Rockbox on the G5 iPod,
and thought I'd send a note about how I got Rockbox installed. Much
easier than the Web page makes it look.

1) Connect the iPod to a Windows machine. Download the latest
iPodLinux installer and run it, thereby installing the latest
bootloader.

2) Plug the iPod into my Mac and unzip Rockbox onto it.

3) Disconnect and reboot the iPod. The iPodLinux bootloader
automatically notices Rockbox and presents it as a boot option.

About the simulator... I had only one unexpected issue in moving from
the Mac simulator to the actual iPod hardware. It was an endianness
problem. I was using C type-punning to directly access a binary data
structure read from a file. The data was in big-endian byte order,
which worked fine on the PowerPC Mac simulator, but not on the actual
little-endian iPod ARM. The simulator was also faster than the actual
hardward, so my animation loop needed a little tuning.

Bill
Received on 2006-08-15


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