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Rockbox mail archiveSubject: Re: Iriver iFP7xx RAM sizeRe: Iriver iFP7xx RAM size
From: nobby nobbs <nobbynobbs_at_gmail.com>
Date: Tue, 19 Jul 2005 14:26:36 +0100 On Tue, 19 Jul 2005 00:30:46 +0100, Tomasz Malesinski <tmal_at_mimuw.edu.pl> wrote: > I got confused. First, what did Nobby mean by flash _ram_? The flash memory used for storing songs. > Second, > Dave, do you think that PNX0102 does not have an external RAM > interface at all or just the audio coprocessor does not have one? If > the audio coprocessor cannot be easily reprogrammed, then could it be > just not used in a Rockbox port? Does not the ARM core have enough > power to decode music itself or do you think that in order to play any > sound on the player we would have to pass it through the coprocessor? > > I know however, that even ignoring the coprocessor, still very little > is known about the iFP hardware. > > On Mon, Jul 18, 2005 at 10:51:17PM +0100, Dave Hooper wrote: >> They could but that's unlikely .. >> Actually, the more I google for info about the PNX0102, the more it >> seems >> that there is no SDRAM interface after all.. seems that the >> programmable >> audio coprocessor built into the core is just flash-programmable. I >> can't >> find any mention of workspace or general-use RAM (or progamming notes >> for >> the coprocessor) but, I suppose, why not. If that's really true then, >> without docs, an iFP7xx port would be next to impossible. >> >> ----- Original Message ----- >> From: "nobby nobbs" <nobbynobbs_at_gmail.com> >> To: "Rockbox development" <rockbox_at_cool.haxx.se> >> Sent: Monday, July 18, 2005 10:34 PM >> Subject: Re: Iriver iFP7xx RAM size >> >> >> >Could a devive like the iFP use flash ram as system ram instead? >> >On Mon, 18 Jul 2005 22:18:39 +0100, Dave Hooper <dave_at_beermex.com> >> wrote: >> > >> >>http://www.rockbox.org/twiki/bin/view/Main/IriverFP3XX5XXHardwareComponents >> >> >> >>This page suggests that the 5xx series at least already have 8MB >> SDRAM.. >> >>so a 5xx or 3xx port is already 'feasible'. >> >> >> >>The 7xx series CPU has 64KB of SRAM *on the processor*. This is the >> >>same sort of approach as the coldfire CPU used in the iriver H1xx/H3xx >> >>series, which have 96KB of SRAM. This is in *addition* to any >> general >> >>SDRAM. I am quite certain that the 7xx also has SDRAM - a fully >> >>functional mp3 player with LCD display and graphical user interface >> can >> >>almost certainly not be implemented with just 64K of ram.. >> >> >> >>d >> >> >> >>----- Original Message ----- From: "Tomasz Malesinski" >> >><tmal_at_mimuw.edu.pl> >> >>To: <rockbox_at_cool.haxx.se> >> >>Sent: Monday, July 18, 2005 7:54 PM >> >>Subject: Iriver iFP7xx RAM size >> >> >> >> >> >>>Dan Hollis has recently updated the wiki page: >> >>> >> >>>http://www.rockbox.org/twiki/bin/view/Main/WebHome?topic=IriverIfpPort >> >>> >> >>>He wrote that iFP7xx players have only 64 kB of RAM. Having analyzed >> >>>their firmware a bit I am quite sure that beside the PNX0102 internal >> >>>SRAM they also have much more (probably 1 MB) SDRAM located at >> >>>0x24000000. Does anyone know for sure what the RAM size is? Has >> >>>anyone opened an iFP7xx player and noted what chips are inside? This >> >>>information seems to be quite important for the decision on whether >> to >> >>>start porting Rockbox to iFP or not. >> >>> >> >>>I do not write to Dan directly, because his email address on his wiki >> >>>page does not look promising to me (spamtrap?). >> >>> >> >>>-- Tomek Malesinski >> >>>_______________________________________________ >> >>>http://cool.haxx.se/mailman/listinfo/rockbox >> >>> >> >> >> >>_______________________________________________ >> >>http://cool.haxx.se/mailman/listinfo/rockbox >> > >> > >> > >> >-- >> >Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ >> >_______________________________________________ >> >http://cool.haxx.se/mailman/listinfo/rockbox >> > >> >> _______________________________________________ >> http://cool.haxx.se/mailman/listinfo/rockbox > -- Using Opera's revolutionary e-mail client: http://www.opera.com/mail/ _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockboxReceived on 2005-07-19 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |