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Subject: Re: Survey for Rockbox in Flash, please participate
From: Eric Linenberg (elinenbe_at_umich.edu)
Date: 2003-05-19


recorder 20 with black bumpers
rom: 1.28
mask: 0x0302
usb: positive
ata: 0x200
PR: positive
Flash: M=BF D=D6

-eric

idgd> Hello,

idgd> we're starting to work on the possibility to bring Rockbox into the Flash
idgd> ROM of the jukebox. Imagine booting in maybe 3 seconds!

idgd> Don't tell me it's dangerous. The box has a boot ROM, it seems to contain a
idgd> little monitor communicating over RS232. We may be able to use this to inject
idgd> code to program the box even if the flash is completely garbled. All this is
idgd> to be analyzed yet.

idgd> There are units with flash chips that could be programmed in-system, while
idgd> others can't (like mine, grr!).
idgd> I made some test code to find out, by reading the flash IDs. Since the
idgd> 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
(Keep Out!)" ->> lists hex bytes for
idgd> manufacturer and device, you're lucky. If it gives only question marks, it failed
idgd> to bring the flash into command mode, meaning either the chip would need a
idgd> 12.5V programming voltage (like my SST37VF020) or you have some exotic flash my
idgd> code is not prepared for.

idgd> The lucky guys are most likely to find "Flash: M=BF D=D6", which means
idgd> SST39VF020. I would be very interested in other values.

idgd> If you did the test, please post here or email me regardless of the result,
idgd> I'd like to get some meaningful statistics.

idgd> Thanks,
idgd> Jörg



Page was last modified "Jan 10 2012" The Rockbox Crew
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