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Rockbox mail archiveSubject: Re: Reflashing JBRv2Re: Reflashing JBRv2
From: [IDC]Dragon <idc-dragon_at_gmx.de>
Date: Sun, 30 May 2004 23:33:16 +0200 (MEST) > I'm not sure if the original Archos f/w is compressed and prefixed with a > decompressor. > But the Rockbox f/w *is* compressed with ucl. The Archos software is also compressed with UCL. > There is also a little program which _must_ be stored in an untouched > section of ROM which detects whether F1 is being pressed at the moment of > startup. My bootloader, yes. > My guess would be > IF (BUTTON!=F1) GOTO ROCKBOX; > is appended to the front of the Archos f/w. Very simplified, yes. Feel free to review the bootloader, it's in cvs under "flash/bootloader.c". Basically, it initializes the DRAM and a few other things, checks for keypress, decompresses one of the 2 images into DRAM destination and jumps there. It can do a few other tricks, has my monitor program "minimon" for serial control, started with F3. Jörg -- +++ Jetzt WLAN-Router für alle DSL-Einsteiger und Wechsler +++ GMX DSL-Powertarife zudem 3 Monate gratis* http://www.gmx.net/dsl _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockboxReceived on 2004-05-30 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |