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Subject: Re: Survey for Rockbox in Flash, please participate

Re: Survey for Rockbox in Flash, please participate

From: leslie carver <leslie_at_tvismylife.com>
Date: Mon, 19 May 2003 11:14:38 -0400

JBR20, black bumpers
Flash: M=BF D=D6

Leslie


----- Original Message -----
From: <idc-dragon_at_gmx.de>
To: <rockbox_at_cool.haxx.se>
Sent: Monday, May 19, 2003 5:54 AM
Subject: Survey for Rockbox in Flash, please participate


> Hello,
>
> we're starting to work on the possibility to bring Rockbox into the Flash
> ROM of the jukebox. Imagine booting in maybe 3 seconds!
>
> Don't tell me it's dangerous. The box has a boot ROM, it seems to contain
a
> little monitor communicating over RS232. We may be able to use this to
inject
> code to program the box even if the flash is completely garbled. All this
is
> to be analyzed yet.
>
> There are units with flash chips that could be programmed in-system, while
> others can't (like mine, grr!).
> I made some test code to find out, by reading the flash IDs. Since the
> 20030518 daily build this code is in. Please test yours, in the menu go to
"Debug
> (Keep Out!)" -> "View HW info". If the Flash entry lists hex bytes for
> manufacturer and device, you're lucky. If it gives only question marks, it
failed
> to bring the flash into command mode, meaning either the chip would need a
> 12.5V programming voltage (like my SST37VF020) or you have some exotic
flash my
> code is not prepared for.
>
> The lucky guys are most likely to find "Flash: M=BF D=D6", which means
> SST39VF020. I would be very interested in other values.
>
> If you did the test, please post here or email me regardless of the
result,
> I'd like to get some meaningful statistics.
>
> Thanks,
> Jörg
Received on 2003-05-19

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