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Rockbox mail archiveSubject: Re: building bootloader from source (h300)Re: building bootloader from source (h300)
From: Dominik Riebeling <dominik.riebeling_at_gmail.com>
Date: Mon, 7 Apr 2008 19:57:13 +0200 On Mon, Apr 7, 2008 at 12:18 AM, Daniel Dalton <d.dalton_at_iinet.net.au> wrote: > > That is the problem. You can't reanimate a bricked h300 without special > equipment. > > > > What equipment is needed? And what is the process of unbricking a h300? > Is it a long and complicated process...? You need to access the debug module of the CPU from "outside", i.e. via hardware. Freescale calls this part of the hardware BDM (Background Debug Module), other manufacturers often call it JTAG (though JTAG itself is only the working group, usually it refers to IEEE 1149.1). A device for accessing this hardware port is usually processor-specific (at best family-specific) and usually not too cheap. A starting point for reading up is http://en.wikipedia.org/wiki/In-circuit_emulator in case you're interested. In case of the H300 this means you need to open the player and solder several wires to connect the BDM. Due to the size of actual circuits this isn't an easy task even for sighted people. - Dominik Received on 2008-04-07 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |