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Subject: Re: ROMbox for fm recorders?
From: Tom Cole (tcole_at_xtra.co.nz)
Date: 2004-08-01


I know this is an old thread but nobody has suggested a simple (to me)
idea for overcoming this problem. That is, to have one (or more) zones
of compression. Compress the part(s) of ROMBox that will be loaded into
RAM and leave the rest uncompressed for access in ROM.

Ok, shoot me down guys.

Tom Cole

On Thu, 22 Jul 2004 17:24:38 +0200 (MEST), you wrote:

>Ezra wrote:
>> is there ROMbox for fm recorders?
>
>No, like Jens wrote. The remaining flash space behind the Archos FM software
>is 12KB smaller than with V1 recorder. Rockbox does not fit in there without
>compressed. And compression forbids direct execution.
>
>We can make it fit for the V2 recorder, which has 4 KB less. Currently,
>Rockbox is 1476 bytes too big for the V2 (when Jens checked). But I have an
>optimization in mind which would save about 6 KB. So we can get there.
>
>The FM is lacking 8 KB more, so 9668 bytes missing. I won't reach that with
>the above.
>
>Funny twist: for .ajz boot, Rockbox must be smaller than 200 kB. Flashed
>Rockbox could be a lot larger, thanks to compression. But flashed without
>compression has worse constraints.
>A mid-term solution (if we like and want ROM execution) is to replace the
>Archos image with something smaller: A Rockbox variant which does only
>charging, USB enable, and .ajz loading.
>
>Jörg

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